[pushed] Fix operator precedence bug in Rust parser
Commit Message
PR rust/29859 points out an operator precedence bug in the Rust
parser. This patch fixes it and adds a regression test.
---
gdb/rust-parse.c | 2 +-
gdb/testsuite/gdb.rust/simple.exp | 4 ++++
2 files changed, 5 insertions(+), 1 deletion(-)
@@ -1398,7 +1398,7 @@ rust_parser::parse_binop (bool required)
break;
}
- while (precedence < operator_stack.back ().precedence
+ while (precedence <= operator_stack.back ().precedence
&& operator_stack.size () > 1)
{
rustop_item rhs = std::move (operator_stack.back ());
@@ -412,3 +412,7 @@ if {[lindex $v 0] >= 8} {
gdb_test "python print(gdb.lookup_type('simple::MoreComplicated').dynamic)" \
"True"
}
+
+# The new parser introduced an operator precedence bug.
+gdb_test "print 5 * 7 / 5" " = 7"
+gdb_test "print 4 - 3 - 1" " = 0"