[pushed] hurd: Suppress GCC 10 -Warray-bounds warning in init-first.c [BZ #25097]
Commit Message
The original change was created by Florian Weimer.
Change URL: https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/657
......................................................................
hurd: Suppress GCC 10 -Warray-bounds warning in init-first.c [BZ #25097]
The trampoline code should really be rewritten in assembler because
this is all very undefined at the C level.
Change-Id: Ided58244ca0ee48892519faac5ac222a4e02dec4
---
M sysdeps/mach/hurd/i386/init-first.c
1 file changed, 9 insertions(+), 0 deletions(-)
@@ -30,6 +30,7 @@
#include <ldsodefs.h>
#include <fpu_control.h>
+#include <libc-diag.h>
extern void __mach_init (void);
extern void __init_misc (int, char **, char **);
@@ -144,6 +145,12 @@
static inline void
init (int *data)
{
+ /* data is the address of the argc parameter to _dl_init_first or
+ doinit1 in _hurd_stack_setup, so the array subscripts are
+ undefined. */
+ DIAG_PUSH_NEEDS_COMMENT;
+ DIAG_IGNORE_NEEDS_COMMENT (10, "-Warray-bounds");
+
int argc = *data;
char **argv = (void *) (data + 1);
char **envp = &argv[argc + 1];
@@ -265,6 +272,8 @@
restored by function return. */
asm volatile ("# a %0 c %1" : : "a" (usercode), "c" (&init1));
}
+
+ DIAG_POP_NEEDS_COMMENT; /* -Warray-bounds. */
}
/* These bits of inline assembler used to be located inside `init'.