[v2,3/4,gdb/testsuite] Fix end_sequence addresses

Message ID 20240408120445.12544-3-tdevries@suse.de
State Committed
Headers
Series [v2,1/4,gdb/testsuite] Require address update for DW_LNE_end_sequence |

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Commit Message

Tom de Vries April 8, 2024, 12:04 p.m. UTC
  I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
...
00000000004102c4 <end_of_sequence>:
  4102c4:       52800000        mov     w0, #0x0                        // #0
  4102c8:       9100c3ff        add     sp, sp, #0x30
  4102cc:       d65f03c0        ret
...
is not described by the line table:
...
File name                    Line number    Starting address    View    Stmt
  ...
map-to-same-line.c                    54            0x4102ac               x
map-to-same-line.c                     -            0x4102c4
...

Fix this by ending the line table at $main_end.

Likewise in a few other test-cases, found using:
...
$ find gdb/testsuite/ -type f \
  | xargs grep -B1 DW_LNE_end_sequence \
  | grep set_address \
  | egrep -v "_end|_len"
...

Tested on aarch64-linux.
---
 gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp         | 2 +-
 gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp        | 2 +-
 gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp        | 2 +-
 gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp        | 2 +-
 gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp       | 7 +++++--
 gdb/testsuite/gdb.dwarf2/dw2-lines.exp                  | 2 +-
 gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp | 4 +++-
 gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl       | 2 +-
 gdb/testsuite/gdb.reverse/map-to-same-line.c            | 1 -
 gdb/testsuite/gdb.reverse/map-to-same-line.exp          | 3 ++-
 10 files changed, 16 insertions(+), 11 deletions(-)
  

Comments

Carl Love April 24, 2024, 5:45 p.m. UTC | #1
Tom:

I am seeing a regression on Power 10 with this patch.  Specifically the change to file  dw2-lines.exp.

--- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp                                                            
+++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp                                                            
@@ -104,7 +104,7 @@ proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {                            
                line [line_for bar_label_4]                                                             
                DW_LNS_copy                                                                             
                                                                                                        
-               DW_LNE_set_address bar_label_5                                                          
+               DW_LNE_set_address "$main_start + $main_len"                                            
                DW_LNE_end_sequence                                                                     
            }                                                                                           
        }    

The change results in the test failing on PowerPC.  

Running /home/carll/GDB/build-current/gdb/testsuite/../../../binutils-gdb-current/gdb/testsuite/gdb.dwarf2/dw2-lines.exp ...
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: continue to breakpoint: foo \(1\) (the program exited)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: next to foo (2) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: next to foo (3) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: next to foo (4) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: continue to breakpoint: foo \(1\) (the program exited)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: next to foo (2) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: next to foo (3) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: next to foo (4) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: continue to breakpoint: foo \(1\) (the program exited)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: next to foo (2) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: next to foo (3) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: next to foo (4) (the program is no longer running)
etc.

If I edit the file and change the line back to  bar_label_5 the test passes.  I am only seeing an issue with the change to in this file.  I specifically tested dw2-inline-header-2.exp and the change seems to work just fine there.  I am really puzzled as to why it doesn't work in file dw2-lines.exp.

I put the print statement in:

		puts "CARLL, main_start = $main_start, main_len = $main_len"
                DW_LNE_set_address "$main_start + $main_len"  

I get               

CARLL, main_start = main_label - 28, main_len = 76

I tried printing main_label but it doesn't seem to be defined.

   ERROR: in testcase /../binutils-gdb-current/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
   ERROR:  can't read "main_label": no such variable
   ERROR:  tcl error code TCL LOOKUP VARNAME main_label
   ERROR:  tcl error info:
   can't read "main_label": no such variable
   
I was hoping to be able to verify that bar_label_5 and "$main_start + $main_len" are the same but no luck.
Anyway, any thoughts as to why this is failing on PowerPC?  I assume it works fine on X86.

At the moment, I am a little puzzled as to what the right fix is.  

                             Carl 

On 4/8/24 05:04, Tom de Vries wrote:
> I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
> ...
> 00000000004102c4 <end_of_sequence>:
>   4102c4:       52800000        mov     w0, #0x0                        // #0
>   4102c8:       9100c3ff        add     sp, sp, #0x30
>   4102cc:       d65f03c0        ret
> ...
> is not described by the line table:
> ...
> File name                    Line number    Starting address    View    Stmt
>   ...
> map-to-same-line.c                    54            0x4102ac               x
> map-to-same-line.c                     -            0x4102c4
> ...
> 
> Fix this by ending the line table at $main_end.
> 
> Likewise in a few other test-cases, found using:
> ...
> $ find gdb/testsuite/ -type f \
>   | xargs grep -B1 DW_LNE_end_sequence \
>   | grep set_address \
>   | egrep -v "_end|_len"
> ...
> 
> Tested on aarch64-linux.
> ---
>  gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp         | 2 +-
>  gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp        | 2 +-
>  gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp        | 2 +-
>  gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp        | 2 +-
>  gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp       | 7 +++++--
>  gdb/testsuite/gdb.dwarf2/dw2-lines.exp                  | 2 +-
>  gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp | 4 +++-
>  gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl       | 2 +-
>  gdb/testsuite/gdb.reverse/map-to-same-line.c            | 1 -
>  gdb/testsuite/gdb.reverse/map-to-same-line.exp          | 3 ++-
>  10 files changed, 16 insertions(+), 11 deletions(-)
> 
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp b/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
> index 1880f4cb7fb..5d6e13a9ae0 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
> @@ -70,7 +70,7 @@ Dwarf::assemble $asm_file {
>  	    line [line_for bar_label]
>  	    DW_LNS_copy
>  
> -	    DW_LNE_set_address bar_label_2
> +	    DW_LNE_set_address $bar_end
>  	    DW_LNE_end_sequence
>  	}
>      }
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
> index 6d12e968f41..1f30c5c3316 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
> @@ -146,7 +146,7 @@ proc do_test { start_label func_name tag } {
>  		DW_LNS_advance_line 1
>  		DW_LNS_copy
>  
> -		DW_LNE_set_address line_label_7
> +		DW_LNE_set_address "$main_start + $main_len"
>  		DW_LNE_end_sequence
>  	    }
>  	}
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
> index 6a5f7d6dd76..68f1fc83859 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
> @@ -134,7 +134,7 @@ Dwarf::assemble $asm_file {
>  	    DW_LNS_advance_line 1
>  	    DW_LNS_copy
>  
> -	    DW_LNE_set_address line_label_7
> +	    DW_LNE_set_address "$main_start + $main_len"
>  	    DW_LNE_end_sequence
>  	}
>      }
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
> index b3db154db25..1b8d136e70e 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
> @@ -123,7 +123,7 @@ Dwarf::assemble $asm_file {
>  	    DW_LNS_negate_stmt
>  	    DW_LNS_copy
>  
> -	    DW_LNE_set_address line_label_7
> +	    DW_LNE_set_address "$main_start + $main_len"
>  	    DW_LNE_end_sequence
>  	}
>      }
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp b/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
> index 603a616930a..c510de42037 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
> @@ -27,6 +27,9 @@ Dwarf::assemble $asm_file {
>      declare_labels Llines
>      global srcdir subdir srcfile
>  
> +    get_func_info bar1
> +    get_func_info bar2
> +
>      cu {} {
>  	compile_unit {
>  	    {language @DW_LANG_C}
> @@ -69,7 +72,7 @@ Dwarf::assemble $asm_file {
>  	    line 33
>  	    DW_LNS_copy
>  
> -	    DW_LNE_set_address bar1_label_5
> +	    DW_LNE_set_address $bar1_end
>  	    DW_LNE_end_sequence
>  
>  
> @@ -91,7 +94,7 @@ Dwarf::assemble $asm_file {
>  	    line 47
>  	    DW_LNS_copy
>  
> -	    DW_LNE_set_address bar2_label_5
> +	    DW_LNE_set_address $bar2_end
>  	    DW_LNE_end_sequence
>  	}
>      }
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
> index 5fd6ae04d38..85d5e9c8afb 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
> @@ -104,7 +104,7 @@ proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {
>  		line [line_for bar_label_4]
>  		DW_LNS_copy
>  
> -		DW_LNE_set_address bar_label_5
> +		DW_LNE_set_address "$main_start + $main_len"
>  		DW_LNE_end_sequence
>  	    }
>  	}
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp b/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
> index 671e3e634ac..5a0705fc613 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
> @@ -30,6 +30,8 @@ Dwarf::assemble $asm_file {
>      set DW_LNE_lo_usr 0x80
>      set DW_LNE_hi_usr 0xff
>  
> +    get_func_info main
> +
>      cu {} {
>  	compile_unit {
>  	    {language @DW_LANG_C}
> @@ -54,7 +56,7 @@ Dwarf::assemble $asm_file {
>  	    DW_LNE_user 2 $DW_LNE_hi_usr
>  	    DW_LNS_copy
>  
> -	    DW_LNE_set_address main_label_2
> +	    DW_LNE_set_address $main_end
>  	    DW_LNE_end_sequence
>  	}
>      }
> diff --git a/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl b/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
> index 968378620a0..5817b2b0f53 100644
> --- a/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
> +++ b/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
> @@ -110,7 +110,7 @@ Dwarf::assemble $asm_file {
>  	    DW_LNS_negate_stmt
>  	    DW_LNS_copy
>  
> -	    DW_LNE_set_address line_label_7
> +	    DW_LNE_set_address "$func_start + $func_len"
>  	    DW_LNE_end_sequence
>  	}
>      }
> diff --git a/gdb/testsuite/gdb.reverse/map-to-same-line.c b/gdb/testsuite/gdb.reverse/map-to-same-line.c
> index 45e7ffb0f06..7185955f40a 100644
> --- a/gdb/testsuite/gdb.reverse/map-to-same-line.c
> +++ b/gdb/testsuite/gdb.reverse/map-to-same-line.c
> @@ -53,6 +53,5 @@ main (void)
>    asm ("main_return: .globl main_return");
>    k = j; f3 = f2; str_3 = str_2;    /* TAG: main return */
>  
> -  asm ("end_of_sequence: .globl end_of_sequence");
>    return 0; /* TAG: main return */
>  }
> diff --git a/gdb/testsuite/gdb.reverse/map-to-same-line.exp b/gdb/testsuite/gdb.reverse/map-to-same-line.exp
> index b556e7cb676..067fe012702 100644
> --- a/gdb/testsuite/gdb.reverse/map-to-same-line.exp
> +++ b/gdb/testsuite/gdb.reverse/map-to-same-line.exp
> @@ -100,7 +100,8 @@ Dwarf::assemble $asm_file {
>  	    DW_LNE_set_address main_return
>  	    line [gdb_get_line_number "TAG: main return"]
>  	    DW_LNS_copy
> -	    DW_LNE_set_address end_of_sequence
> +
> +	    DW_LNE_set_address $main_end
>  	    DW_LNE_end_sequence
>  	}
>      }
  
Carl Love April 24, 2024, 6:07 p.m. UTC | #2
Tom:

I think I see the issue.  bar_label_5 is a label in function bar.  But "$main_start + $main_len" this
will give us an address in main, not bar.  So, we need to set the address relative to the beginning of function bar?

                   Carl 

On 4/24/24 10:45, Carl Love wrote:
> Tom:
> 
> I am seeing a regression on Power 10 with this patch.  Specifically the change to file  dw2-lines.exp.
> 
> --- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp                                                            
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp                                                            
> @@ -104,7 +104,7 @@ proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {                            
>                 line [line_for bar_label_4]                                                             
>                 DW_LNS_copy                                                                             
>                                                                                                         
> -               DW_LNE_set_address bar_label_5                                                          
> +               DW_LNE_set_address "$main_start + $main_len"                                            
>                 DW_LNE_end_sequence                                                                     
>             }                                                                                           
>         }    
> 
> The change results in the test failing on PowerPC.  
> 
> Running /home/carll/GDB/build-current/gdb/testsuite/../../../binutils-gdb-current/gdb/testsuite/gdb.dwarf2/dw2-lines.exp ...
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: continue to breakpoint: foo \(1\) (the program exited)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: next to foo (2) (the program is no longer running)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: next to foo (3) (the program is no longer running)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: next to foo (4) (the program is no longer running)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: continue to breakpoint: foo \(1\) (the program exited)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: next to foo (2) (the program is no longer running)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: next to foo (3) (the program is no longer running)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: next to foo (4) (the program is no longer running)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: continue to breakpoint: foo \(1\) (the program exited)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: next to foo (2) (the program is no longer running)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: next to foo (3) (the program is no longer running)
> FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: next to foo (4) (the program is no longer running)
> etc.
> 
> If I edit the file and change the line back to  bar_label_5 the test passes.  I am only seeing an issue with the change to in this file.  I specifically tested dw2-inline-header-2.exp and the change seems to work just fine there.  I am really puzzled as to why it doesn't work in file dw2-lines.exp.
> 
> I put the print statement in:
> 
> 		puts "CARLL, main_start = $main_start, main_len = $main_len"
>                 DW_LNE_set_address "$main_start + $main_len"  
> 
> I get               
> 
> CARLL, main_start = main_label - 28, main_len = 76
> 
> I tried printing main_label but it doesn't seem to be defined.
> 
>    ERROR: in testcase /../binutils-gdb-current/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
>    ERROR:  can't read "main_label": no such variable
>    ERROR:  tcl error code TCL LOOKUP VARNAME main_label
>    ERROR:  tcl error info:
>    can't read "main_label": no such variable
>    
> I was hoping to be able to verify that bar_label_5 and "$main_start + $main_len" are the same but no luck.
> Anyway, any thoughts as to why this is failing on PowerPC?  I assume it works fine on X86.
> 
> At the moment, I am a little puzzled as to what the right fix is.  
> 
>                              Carl 
> 
> On 4/8/24 05:04, Tom de Vries wrote:
>> I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
>> ...
>> 00000000004102c4 <end_of_sequence>:
>>   4102c4:       52800000        mov     w0, #0x0                        // #0
>>   4102c8:       9100c3ff        add     sp, sp, #0x30
>>   4102cc:       d65f03c0        ret
>> ...
>> is not described by the line table:
>> ...
>> File name                    Line number    Starting address    View    Stmt
>>   ...
>> map-to-same-line.c                    54            0x4102ac               x
>> map-to-same-line.c                     -            0x4102c4
>> ...
>>
>> Fix this by ending the line table at $main_end.
>>
>> Likewise in a few other test-cases, found using:
>> ...
>> $ find gdb/testsuite/ -type f \
>>   | xargs grep -B1 DW_LNE_end_sequence \
>>   | grep set_address \
>>   | egrep -v "_end|_len"
>> ...
>>
>> Tested on aarch64-linux.
>> ---
>>  gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp         | 2 +-
>>  gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp        | 2 +-
>>  gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp        | 2 +-
>>  gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp        | 2 +-
>>  gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp       | 7 +++++--
>>  gdb/testsuite/gdb.dwarf2/dw2-lines.exp                  | 2 +-
>>  gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp | 4 +++-
>>  gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl       | 2 +-
>>  gdb/testsuite/gdb.reverse/map-to-same-line.c            | 1 -
>>  gdb/testsuite/gdb.reverse/map-to-same-line.exp          | 3 ++-
>>  10 files changed, 16 insertions(+), 11 deletions(-)
>>
>> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp b/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
>> index 1880f4cb7fb..5d6e13a9ae0 100644
>> --- a/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
>> +++ b/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
>> @@ -70,7 +70,7 @@ Dwarf::assemble $asm_file {
>>  	    line [line_for bar_label]
>>  	    DW_LNS_copy
>>  
>> -	    DW_LNE_set_address bar_label_2
>> +	    DW_LNE_set_address $bar_end
>>  	    DW_LNE_end_sequence
>>  	}
>>      }
>> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
>> index 6d12e968f41..1f30c5c3316 100644
>> --- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
>> +++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
>> @@ -146,7 +146,7 @@ proc do_test { start_label func_name tag } {
>>  		DW_LNS_advance_line 1
>>  		DW_LNS_copy
>>  
>> -		DW_LNE_set_address line_label_7
>> +		DW_LNE_set_address "$main_start + $main_len"
>>  		DW_LNE_end_sequence
>>  	    }
>>  	}
>> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
>> index 6a5f7d6dd76..68f1fc83859 100644
>> --- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
>> +++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
>> @@ -134,7 +134,7 @@ Dwarf::assemble $asm_file {
>>  	    DW_LNS_advance_line 1
>>  	    DW_LNS_copy
>>  
>> -	    DW_LNE_set_address line_label_7
>> +	    DW_LNE_set_address "$main_start + $main_len"
>>  	    DW_LNE_end_sequence
>>  	}
>>      }
>> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
>> index b3db154db25..1b8d136e70e 100644
>> --- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
>> +++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
>> @@ -123,7 +123,7 @@ Dwarf::assemble $asm_file {
>>  	    DW_LNS_negate_stmt
>>  	    DW_LNS_copy
>>  
>> -	    DW_LNE_set_address line_label_7
>> +	    DW_LNE_set_address "$main_start + $main_len"
>>  	    DW_LNE_end_sequence
>>  	}
>>      }
>> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp b/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
>> index 603a616930a..c510de42037 100644
>> --- a/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
>> +++ b/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
>> @@ -27,6 +27,9 @@ Dwarf::assemble $asm_file {
>>      declare_labels Llines
>>      global srcdir subdir srcfile
>>  
>> +    get_func_info bar1
>> +    get_func_info bar2
>> +
>>      cu {} {
>>  	compile_unit {
>>  	    {language @DW_LANG_C}
>> @@ -69,7 +72,7 @@ Dwarf::assemble $asm_file {
>>  	    line 33
>>  	    DW_LNS_copy
>>  
>> -	    DW_LNE_set_address bar1_label_5
>> +	    DW_LNE_set_address $bar1_end
>>  	    DW_LNE_end_sequence
>>  
>>  
>> @@ -91,7 +94,7 @@ Dwarf::assemble $asm_file {
>>  	    line 47
>>  	    DW_LNS_copy
>>  
>> -	    DW_LNE_set_address bar2_label_5
>> +	    DW_LNE_set_address $bar2_end
>>  	    DW_LNE_end_sequence
>>  	}
>>      }
>> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
>> index 5fd6ae04d38..85d5e9c8afb 100644
>> --- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
>> +++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
>> @@ -104,7 +104,7 @@ proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {
>>  		line [line_for bar_label_4]
>>  		DW_LNS_copy
>>  
>> -		DW_LNE_set_address bar_label_5
>> +		DW_LNE_set_address "$main_start + $main_len"
>>  		DW_LNE_end_sequence
>>  	    }
>>  	}
>> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp b/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
>> index 671e3e634ac..5a0705fc613 100644
>> --- a/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
>> +++ b/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
>> @@ -30,6 +30,8 @@ Dwarf::assemble $asm_file {
>>      set DW_LNE_lo_usr 0x80
>>      set DW_LNE_hi_usr 0xff
>>  
>> +    get_func_info main
>> +
>>      cu {} {
>>  	compile_unit {
>>  	    {language @DW_LANG_C}
>> @@ -54,7 +56,7 @@ Dwarf::assemble $asm_file {
>>  	    DW_LNE_user 2 $DW_LNE_hi_usr
>>  	    DW_LNS_copy
>>  
>> -	    DW_LNE_set_address main_label_2
>> +	    DW_LNE_set_address $main_end
>>  	    DW_LNE_end_sequence
>>  	}
>>      }
>> diff --git a/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl b/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
>> index 968378620a0..5817b2b0f53 100644
>> --- a/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
>> +++ b/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
>> @@ -110,7 +110,7 @@ Dwarf::assemble $asm_file {
>>  	    DW_LNS_negate_stmt
>>  	    DW_LNS_copy
>>  
>> -	    DW_LNE_set_address line_label_7
>> +	    DW_LNE_set_address "$func_start + $func_len"
>>  	    DW_LNE_end_sequence
>>  	}
>>      }
>> diff --git a/gdb/testsuite/gdb.reverse/map-to-same-line.c b/gdb/testsuite/gdb.reverse/map-to-same-line.c
>> index 45e7ffb0f06..7185955f40a 100644
>> --- a/gdb/testsuite/gdb.reverse/map-to-same-line.c
>> +++ b/gdb/testsuite/gdb.reverse/map-to-same-line.c
>> @@ -53,6 +53,5 @@ main (void)
>>    asm ("main_return: .globl main_return");
>>    k = j; f3 = f2; str_3 = str_2;    /* TAG: main return */
>>  
>> -  asm ("end_of_sequence: .globl end_of_sequence");
>>    return 0; /* TAG: main return */
>>  }
>> diff --git a/gdb/testsuite/gdb.reverse/map-to-same-line.exp b/gdb/testsuite/gdb.reverse/map-to-same-line.exp
>> index b556e7cb676..067fe012702 100644
>> --- a/gdb/testsuite/gdb.reverse/map-to-same-line.exp
>> +++ b/gdb/testsuite/gdb.reverse/map-to-same-line.exp
>> @@ -100,7 +100,8 @@ Dwarf::assemble $asm_file {
>>  	    DW_LNE_set_address main_return
>>  	    line [gdb_get_line_number "TAG: main return"]
>>  	    DW_LNS_copy
>> -	    DW_LNE_set_address end_of_sequence
>> +
>> +	    DW_LNE_set_address $main_end
>>  	    DW_LNE_end_sequence
>>  	}
>>      }
  
Carl Love April 24, 2024, 6:28 p.m. UTC | #3
Tom:

The following patch fixes the issue for me on PowerPC.  Please let me know if it looks ok and if the patch works on your systems as well.  Thanks.

                        Carl 

----------------------------------------------------------------------

Fix end_sequence addresses for dw2-lines.exp

The patch:

  From f0d556d14b1d1c3f8e2f9c13b08adca22e1b8c9c Mon Sep 17 00:00:00 2001
  From: Tom de Vries <tdevries@suse.de>
  Date: Wed, 17 Apr 2024 12:55:00 +0200
  Subject: [PATCH] [gdb/testsuite] Fix end_sequence addresses

  I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
  ...
  00000000004102c4 <end_of_sequence>:
    4102c4:       52800000        mov     w0, #0x0                        // #0
   4102c8:       9100c3ff        add     sp, sp, #0x30
    4102cc:       d65f03c0        ret
  ...
  is not described by the line table:
  ...
  File name                    Line number    Starting address    View    Stmt
    ...
  map-to-same-line.c                    54            0x4102ac               x
  map-to-same-line.c                     -            0x4102c4
  ...

  Fix this by ending the line table at $main_end.

  Likewise in a few other test-cases, found using:
  ...
  $ find gdb/testsuite/ -type f \
    | xargs grep -B1 DW_LNE_end_sequence \
    | grep set_address \
    | egrep -v "_end|_len"
  ...

  Tested on aarch64-linux.
  ---
   gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp         | 2 +-
   gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp        | 2 +-
   gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp        | 2 +-
   gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp        | 2 +-
   gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp       | 7 +++++--
   gdb/testsuite/gdb.dwarf2/dw2-lines.exp                  | 2 +-
   gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp | 4 +++-
   gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl       | 2 +-
   gdb/testsuite/gdb.reverse/map-to-same-line.c            | 1 -
   gdb/testsuite/gdb.reverse/map-to-same-line.exp          | 3 ++-
   10 files changed, 16 insertions(+), 11 deletions(-)

The issue in file dw2-lines.exp is the change


-               DW_LNE_set_address bar_label_5
+               DW_LNE_set_address "$main_start + $main_len"

The label bar_label_5 is in function bar, not function  main.  The new
set address should have been $bar_start + $bar_len.
---
 gdb/testsuite/gdb.dwarf2/dw2-lines.exp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
index 85d5e9c8afb..af5b6b71768 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
@@ -104,7 +104,7 @@ proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {
 		line [line_for bar_label_4]
 		DW_LNS_copy
 
-		DW_LNE_set_address "$main_start + $main_len"
+		DW_LNE_set_address "$bar_start + $bar_len"
 		DW_LNE_end_sequence
 	    }
 	}
  
Tom de Vries April 24, 2024, 9:07 p.m. UTC | #4
On 4/24/24 20:28, Carl Love wrote:
> 
> Tom:
> 
> The following patch fixes the issue for me on PowerPC.  Please let me know if it looks ok and if the patch works on your systems as well.  Thanks.
> 
>                          Carl

Hi Carl,

I don't see the FAILs you mentioned, but your patch is correct, and 
doesn't regress the test-case for me on x86_64-linux.

Thanks for finding, reporting and fixing this.

So, approved, but consider making the commit message shorter. 
Including the entire commit message of the patch you're fixing is a bit 
of an overkill.

Approved-By: Tom de Vries <tdevries@suse.de>

Thanks,
- Tom

> 
> ----------------------------------------------------------------------
> 
> Fix end_sequence addresses for dw2-lines.exp
> 
> The patch:
> 
>    From f0d556d14b1d1c3f8e2f9c13b08adca22e1b8c9c Mon Sep 17 00:00:00 2001
>    From: Tom de Vries <tdevries@suse.de>
>    Date: Wed, 17 Apr 2024 12:55:00 +0200
>    Subject: [PATCH] [gdb/testsuite] Fix end_sequence addresses
> 
>    I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
>    ...
>    00000000004102c4 <end_of_sequence>:
>      4102c4:       52800000        mov     w0, #0x0                        // #0
>     4102c8:       9100c3ff        add     sp, sp, #0x30
>      4102cc:       d65f03c0        ret
>    ...
>    is not described by the line table:
>    ...
>    File name                    Line number    Starting address    View    Stmt
>      ...
>    map-to-same-line.c                    54            0x4102ac               x
>    map-to-same-line.c                     -            0x4102c4
>    ...
> 
>    Fix this by ending the line table at $main_end.
> 
>    Likewise in a few other test-cases, found using:
>    ...
>    $ find gdb/testsuite/ -type f \
>      | xargs grep -B1 DW_LNE_end_sequence \
>      | grep set_address \
>      | egrep -v "_end|_len"
>    ...
> 
>    Tested on aarch64-linux.
>    ---
>     gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp         | 2 +-
>     gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp        | 2 +-
>     gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp        | 2 +-
>     gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp        | 2 +-
>     gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp       | 7 +++++--
>     gdb/testsuite/gdb.dwarf2/dw2-lines.exp                  | 2 +-
>     gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp | 4 +++-
>     gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl       | 2 +-
>     gdb/testsuite/gdb.reverse/map-to-same-line.c            | 1 -
>     gdb/testsuite/gdb.reverse/map-to-same-line.exp          | 3 ++-
>     10 files changed, 16 insertions(+), 11 deletions(-)
> 
> The issue in file dw2-lines.exp is the change
> 
> 
> -               DW_LNE_set_address bar_label_5
> +               DW_LNE_set_address "$main_start + $main_len"
> 
> The label bar_label_5 is in function bar, not function  main.  The new
> set address should have been $bar_start + $bar_len.
> ---
>   gdb/testsuite/gdb.dwarf2/dw2-lines.exp | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
> index 85d5e9c8afb..af5b6b71768 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
> @@ -104,7 +104,7 @@ proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {
>   		line [line_for bar_label_4]
>   		DW_LNS_copy
>   
> -		DW_LNE_set_address "$main_start + $main_len"
> +		DW_LNE_set_address "$bar_start + $bar_len"
>   		DW_LNE_end_sequence
>   	    }
>   	}
  
Carl Love April 25, 2024, 5:05 p.m. UTC | #5
Tom:

Thanks for verifying the patch on X86.  I agree, including the entire commit message from your patch
is a little overkill.  I cut down your commit message and made the description of my fix a little better.
Here is what I now have for the commit message:

------------------------------------------------------
Fix end_sequence addresses for dw2-lines.exp

The patch:

  From f0d556d14b1d1c3f8e2f9c13b08adca22e1b8c9c Mon Sep 17 00:00:00 2001
  From: Tom de Vries <tdevries@suse.de>
  Date: Wed, 17 Apr 2024 12:55:00 +0200
  Subject: [PATCH] [gdb/testsuite] Fix end_sequence addresses

  I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
  ...
  00000000004102c4 <end_of_sequence>:
    4102c4:       52800000        mov     w0, #0x0                        // #0
   4102c8:       9100c3ff        add     sp, sp, #0x30
    4102cc:       d65f03c0        ret
  ...
  is not described by the line table:
  ...

  <snip>


The regression failure on PowerPC is due to the change in file
dw2-lines.exp,

-               DW_LNE_set_address bar_label_5
+               DW_LNE_set_address "$main_start + $main_len"

The label bar_label_5 is in function bar, not function main.  The new
set address should have been $bar_start + $bar_len.

--------------------------------------------------------

Please let me know if that looks reasonable and I will then commit the fix.  Thanks!

                       Carl 


On 4/24/24 14:07, Tom de Vries wrote:
> On 4/24/24 20:28, Carl Love wrote:
>>
>> Tom:
>>
>> The following patch fixes the issue for me on PowerPC.  Please let me know if it looks ok and if the patch works on your systems as well.  Thanks.
>>
>>                          Carl
> 
> Hi Carl,
> 
> I don't see the FAILs you mentioned, but your patch is correct, and doesn't regress the test-case for me on x86_64-linux.
> 
> Thanks for finding, reporting and fixing this.
> 
> So, approved, but consider making the commit message shorter. Including the entire commit message of the patch you're fixing is a bit of an overkill.
> 
> Approved-By: Tom de Vries <tdevries@suse.de>
> 
> Thanks,
> - Tom
> 
>>
>> ----------------------------------------------------------------------
>>
>> Fix end_sequence addresses for dw2-lines.exp
>>
>> The patch:
>>
>>    From f0d556d14b1d1c3f8e2f9c13b08adca22e1b8c9c Mon Sep 17 00:00:00 2001
>>    From: Tom de Vries <tdevries@suse.de>
>>    Date: Wed, 17 Apr 2024 12:55:00 +0200
>>    Subject: [PATCH] [gdb/testsuite] Fix end_sequence addresses
>>
>>    I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
>>    ...
>>    00000000004102c4 <end_of_sequence>:
>>      4102c4:       52800000        mov     w0, #0x0                        // #0
>>     4102c8:       9100c3ff        add     sp, sp, #0x30
>>      4102cc:       d65f03c0        ret
>>    ...
>>    is not described by the line table:
>>    ...
>>    File name                    Line number    Starting address    View    Stmt
>>      ...
>>    map-to-same-line.c                    54            0x4102ac               x
>>    map-to-same-line.c                     -            0x4102c4
>>    ...
>>
>>    Fix this by ending the line table at $main_end.
>>
>>    Likewise in a few other test-cases, found using:
>>    ...
>>    $ find gdb/testsuite/ -type f \
>>      | xargs grep -B1 DW_LNE_end_sequence \
>>      | grep set_address \
>>      | egrep -v "_end|_len"
>>    ...
>>
>>    Tested on aarch64-linux.
>>    ---
>>     gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp         | 2 +-
>>     gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp        | 2 +-
>>     gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp        | 2 +-
>>     gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp        | 2 +-
>>     gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp       | 7 +++++--
>>     gdb/testsuite/gdb.dwarf2/dw2-lines.exp                  | 2 +-
>>     gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp | 4 +++-
>>     gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl       | 2 +-
>>     gdb/testsuite/gdb.reverse/map-to-same-line.c            | 1 -
>>     gdb/testsuite/gdb.reverse/map-to-same-line.exp          | 3 ++-
>>     10 files changed, 16 insertions(+), 11 deletions(-)
>>
>> The issue in file dw2-lines.exp is the change
>>
>>
>> -               DW_LNE_set_address bar_label_5
>> +               DW_LNE_set_address "$main_start + $main_len"
>>
>> The label bar_label_5 is in function bar, not function  main.  The new
>> set address should have been $bar_start + $bar_len.
>> ---
>>   gdb/testsuite/gdb.dwarf2/dw2-lines.exp | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
>> index 85d5e9c8afb..af5b6b71768 100644
>> --- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
>> +++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
>> @@ -104,7 +104,7 @@ proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {
>>           line [line_for bar_label_4]
>>           DW_LNS_copy
>>   -        DW_LNE_set_address "$main_start + $main_len"
>> +        DW_LNE_set_address "$bar_start + $bar_len"
>>           DW_LNE_end_sequence
>>           }
>>       }
>
  
Tom de Vries April 25, 2024, 8:46 p.m. UTC | #6
On 4/25/24 19:05, Carl Love wrote:
> Tom:
> 
> Thanks for verifying the patch on X86.  I agree, including the entire commit message from your patch
> is a little overkill.  I cut down your commit message and made the description of my fix a little better.
> Here is what I now have for the commit message:
> 
> ------------------------------------------------------
> Fix end_sequence addresses for dw2-lines.exp
> 
> The patch:
> 
>    From f0d556d14b1d1c3f8e2f9c13b08adca22e1b8c9c Mon Sep 17 00:00:00 2001
>    From: Tom de Vries <tdevries@suse.de>
>    Date: Wed, 17 Apr 2024 12:55:00 +0200
>    Subject: [PATCH] [gdb/testsuite] Fix end_sequence addresses
> 
>    I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
>    ...
>    00000000004102c4 <end_of_sequence>:
>      4102c4:       52800000        mov     w0, #0x0                        // #0
>     4102c8:       9100c3ff        add     sp, sp, #0x30
>      4102cc:       d65f03c0        ret
>    ...
>    is not described by the line table:
>    ...
> 
>    <snip>
> 
> 
> The regression failure on PowerPC is due to the change in file
> dw2-lines.exp,
> 
> -               DW_LNE_set_address bar_label_5
> +               DW_LNE_set_address "$main_start + $main_len"
> 
> The label bar_label_5 is in function bar, not function main.  The new
> set address should have been $bar_start + $bar_len.
> 
> --------------------------------------------------------
> 
> Please let me know if that looks reasonable and I will then commit the fix.  Thanks!


Hi Carl,

yes, this is fine, thanks.

- Tom

> 
>                         Carl
> 
> 
> On 4/24/24 14:07, Tom de Vries wrote:
>> On 4/24/24 20:28, Carl Love wrote:
>>>
>>> Tom:
>>>
>>> The following patch fixes the issue for me on PowerPC.  Please let me know if it looks ok and if the patch works on your systems as well.  Thanks.
>>>
>>>                           Carl
>>
>> Hi Carl,
>>
>> I don't see the FAILs you mentioned, but your patch is correct, and doesn't regress the test-case for me on x86_64-linux.
>>
>> Thanks for finding, reporting and fixing this.
>>
>> So, approved, but consider making the commit message shorter. Including the entire commit message of the patch you're fixing is a bit of an overkill.
>>
>> Approved-By: Tom de Vries <tdevries@suse.de>
>>
>> Thanks,
>> - Tom
>>
>>>
>>> ----------------------------------------------------------------------
>>>
>>> Fix end_sequence addresses for dw2-lines.exp
>>>
>>> The patch:
>>>
>>>     From f0d556d14b1d1c3f8e2f9c13b08adca22e1b8c9c Mon Sep 17 00:00:00 2001
>>>     From: Tom de Vries <tdevries@suse.de>
>>>     Date: Wed, 17 Apr 2024 12:55:00 +0200
>>>     Subject: [PATCH] [gdb/testsuite] Fix end_sequence addresses
>>>
>>>     I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
>>>     ...
>>>     00000000004102c4 <end_of_sequence>:
>>>       4102c4:       52800000        mov     w0, #0x0                        // #0
>>>      4102c8:       9100c3ff        add     sp, sp, #0x30
>>>       4102cc:       d65f03c0        ret
>>>     ...
>>>     is not described by the line table:
>>>     ...
>>>     File name                    Line number    Starting address    View    Stmt
>>>       ...
>>>     map-to-same-line.c                    54            0x4102ac               x
>>>     map-to-same-line.c                     -            0x4102c4
>>>     ...
>>>
>>>     Fix this by ending the line table at $main_end.
>>>
>>>     Likewise in a few other test-cases, found using:
>>>     ...
>>>     $ find gdb/testsuite/ -type f \
>>>       | xargs grep -B1 DW_LNE_end_sequence \
>>>       | grep set_address \
>>>       | egrep -v "_end|_len"
>>>     ...
>>>
>>>     Tested on aarch64-linux.
>>>     ---
>>>      gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp         | 2 +-
>>>      gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp        | 2 +-
>>>      gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp        | 2 +-
>>>      gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp        | 2 +-
>>>      gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp       | 7 +++++--
>>>      gdb/testsuite/gdb.dwarf2/dw2-lines.exp                  | 2 +-
>>>      gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp | 4 +++-
>>>      gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl       | 2 +-
>>>      gdb/testsuite/gdb.reverse/map-to-same-line.c            | 1 -
>>>      gdb/testsuite/gdb.reverse/map-to-same-line.exp          | 3 ++-
>>>      10 files changed, 16 insertions(+), 11 deletions(-)
>>>
>>> The issue in file dw2-lines.exp is the change
>>>
>>>
>>> -               DW_LNE_set_address bar_label_5
>>> +               DW_LNE_set_address "$main_start + $main_len"
>>>
>>> The label bar_label_5 is in function bar, not function  main.  The new
>>> set address should have been $bar_start + $bar_len.
>>> ---
>>>    gdb/testsuite/gdb.dwarf2/dw2-lines.exp | 2 +-
>>>    1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
>>> index 85d5e9c8afb..af5b6b71768 100644
>>> --- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
>>> +++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
>>> @@ -104,7 +104,7 @@ proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {
>>>            line [line_for bar_label_4]
>>>            DW_LNS_copy
>>>    -        DW_LNE_set_address "$main_start + $main_len"
>>> +        DW_LNE_set_address "$bar_start + $bar_len"
>>>            DW_LNE_end_sequence
>>>            }
>>>        }
>>
  

Patch

diff --git a/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp b/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
index 1880f4cb7fb..5d6e13a9ae0 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
@@ -70,7 +70,7 @@  Dwarf::assemble $asm_file {
 	    line [line_for bar_label]
 	    DW_LNS_copy
 
-	    DW_LNE_set_address bar_label_2
+	    DW_LNE_set_address $bar_end
 	    DW_LNE_end_sequence
 	}
     }
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
index 6d12e968f41..1f30c5c3316 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
@@ -146,7 +146,7 @@  proc do_test { start_label func_name tag } {
 		DW_LNS_advance_line 1
 		DW_LNS_copy
 
-		DW_LNE_set_address line_label_7
+		DW_LNE_set_address "$main_start + $main_len"
 		DW_LNE_end_sequence
 	    }
 	}
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
index 6a5f7d6dd76..68f1fc83859 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
@@ -134,7 +134,7 @@  Dwarf::assemble $asm_file {
 	    DW_LNS_advance_line 1
 	    DW_LNS_copy
 
-	    DW_LNE_set_address line_label_7
+	    DW_LNE_set_address "$main_start + $main_len"
 	    DW_LNE_end_sequence
 	}
     }
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
index b3db154db25..1b8d136e70e 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
@@ -123,7 +123,7 @@  Dwarf::assemble $asm_file {
 	    DW_LNS_negate_stmt
 	    DW_LNS_copy
 
-	    DW_LNE_set_address line_label_7
+	    DW_LNE_set_address "$main_start + $main_len"
 	    DW_LNE_end_sequence
 	}
     }
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp b/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
index 603a616930a..c510de42037 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
@@ -27,6 +27,9 @@  Dwarf::assemble $asm_file {
     declare_labels Llines
     global srcdir subdir srcfile
 
+    get_func_info bar1
+    get_func_info bar2
+
     cu {} {
 	compile_unit {
 	    {language @DW_LANG_C}
@@ -69,7 +72,7 @@  Dwarf::assemble $asm_file {
 	    line 33
 	    DW_LNS_copy
 
-	    DW_LNE_set_address bar1_label_5
+	    DW_LNE_set_address $bar1_end
 	    DW_LNE_end_sequence
 
 
@@ -91,7 +94,7 @@  Dwarf::assemble $asm_file {
 	    line 47
 	    DW_LNS_copy
 
-	    DW_LNE_set_address bar2_label_5
+	    DW_LNE_set_address $bar2_end
 	    DW_LNE_end_sequence
 	}
     }
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
index 5fd6ae04d38..85d5e9c8afb 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
@@ -104,7 +104,7 @@  proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {
 		line [line_for bar_label_4]
 		DW_LNS_copy
 
-		DW_LNE_set_address bar_label_5
+		DW_LNE_set_address "$main_start + $main_len"
 		DW_LNE_end_sequence
 	    }
 	}
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp b/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
index 671e3e634ac..5a0705fc613 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
@@ -30,6 +30,8 @@  Dwarf::assemble $asm_file {
     set DW_LNE_lo_usr 0x80
     set DW_LNE_hi_usr 0xff
 
+    get_func_info main
+
     cu {} {
 	compile_unit {
 	    {language @DW_LANG_C}
@@ -54,7 +56,7 @@  Dwarf::assemble $asm_file {
 	    DW_LNE_user 2 $DW_LNE_hi_usr
 	    DW_LNS_copy
 
-	    DW_LNE_set_address main_label_2
+	    DW_LNE_set_address $main_end
 	    DW_LNE_end_sequence
 	}
     }
diff --git a/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl b/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
index 968378620a0..5817b2b0f53 100644
--- a/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
+++ b/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
@@ -110,7 +110,7 @@  Dwarf::assemble $asm_file {
 	    DW_LNS_negate_stmt
 	    DW_LNS_copy
 
-	    DW_LNE_set_address line_label_7
+	    DW_LNE_set_address "$func_start + $func_len"
 	    DW_LNE_end_sequence
 	}
     }
diff --git a/gdb/testsuite/gdb.reverse/map-to-same-line.c b/gdb/testsuite/gdb.reverse/map-to-same-line.c
index 45e7ffb0f06..7185955f40a 100644
--- a/gdb/testsuite/gdb.reverse/map-to-same-line.c
+++ b/gdb/testsuite/gdb.reverse/map-to-same-line.c
@@ -53,6 +53,5 @@  main (void)
   asm ("main_return: .globl main_return");
   k = j; f3 = f2; str_3 = str_2;    /* TAG: main return */
 
-  asm ("end_of_sequence: .globl end_of_sequence");
   return 0; /* TAG: main return */
 }
diff --git a/gdb/testsuite/gdb.reverse/map-to-same-line.exp b/gdb/testsuite/gdb.reverse/map-to-same-line.exp
index b556e7cb676..067fe012702 100644
--- a/gdb/testsuite/gdb.reverse/map-to-same-line.exp
+++ b/gdb/testsuite/gdb.reverse/map-to-same-line.exp
@@ -100,7 +100,8 @@  Dwarf::assemble $asm_file {
 	    DW_LNE_set_address main_return
 	    line [gdb_get_line_number "TAG: main return"]
 	    DW_LNS_copy
-	    DW_LNE_set_address end_of_sequence
+
+	    DW_LNE_set_address $main_end
 	    DW_LNE_end_sequence
 	}
     }