https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107414
Bug ID: 107414
Summary: dwarf 5 C macro support
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: drepper.fsp+rhbz at gmail dot com
Target Milestone: ---
Take this code:
union node {
struct {
int a;
} l;
} x;
#define memory l.a
int main()
{
return x.memory;
}
When compiled with -gdwarf-4 -g3 and run in gdb, it is possible to use
Breakpoint 1, main () at u.c:11
11 return x.memory;
(gdb) p x.memory
$1 = 0
When instead -gdwarf-5 -g3 is used 'memory' is not known to be a macro and one
gets
Breakpoint 1, main () at u.c:11
11 return x.memory;
(gdb) p x.memory
There is no member named memory.
Shouldn't the Dwarf 5 data be a superset of what Dwarf 4 provides?
This is not new in the trunk/13 version. 12.1 fails as well and likely prior
versions, too.
