[Bug sanitizer/77631] New: no symbols in backtrace shown by ASan when debug info is split

[gcc-bugs at muelli dot cryptobitch.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77631

            Bug ID: 77631
           Summary: no symbols in backtrace shown by ASan when debug info
                    is split
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gcc-bugs at muelli dot cryptobitch.de
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
  Target Milestone: ---

I'm using GCC 6.2 with Address Sanitizer.
When stripping debug info to separate files, gdb is able to load those nicely.
When ASan prints a stacktrace, however, no symbols are shown.

bash-4.3$ gdb gnome-calculator 
GNU gdb (GDB) 7.9.1
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Reading symbols from gnome-calculator...Reading symbols from
/usr/lib/debug//app/bin/gnome-calculator.debug...done.
done.
(gdb) start
Temporary breakpoint 1 at 0x4129b9: file gnome-calculator.c, line 1162.
Starting program: /app/bin/gnome-calculator 
warning: Error disabling address space randomization: Operation not
permitted
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".

Temporary breakpoint 1, main (argc=1, argv=0x7ffc23a33f78)
    at gnome-calculator.c:1162
1162            return calculator_main (argv, argc);
(gdb) l
1157    
1158    int main (int argc, char ** argv) {
1159    #if !GLIB_CHECK_VERSION (2,35,0)
1160            g_type_init ();
1161    #endif
1162            return calculator_main (argv, argc);
1163    }
1164    
1165    
1166    static void calculator_class_init (CalculatorClass * klass)
{
(gdb) n

(gnome-calculator:5): Gtk-WARNING **: Locale not supported by C
library.
        Using the fallback 'C' locale.
=================================================================
==3==ERROR: AddressSanitizer: global-buffer-overflow on address
0x0000006c7eb0 at pc 0x00000041491e bp 0x7fff8ef07f50 sp 0x7fff8ef07f48
READ of size 8 at 0x0000006c7eb0 thread T0
    #0 0x41491d  (/app/bin/gnome-calculator+0x41491d)
    #1 0x413f36  (/app/bin/gnome-calculator+0x413f36)
    #2 0x4213da  (/app/bin/gnome-calculator+0x4213da)
    #3 0x4243ec  (/app/bin/gnome-calculator+0x4243ec)
    #4 0x42c59a in math_buttons_set_mode (/app/bin/gnome-
calculator+0x42c59a)
    #5 0x40de41  (/app/bin/gnome-calculator+0x40de41)
    #6 0x7f7d81e65783  (/lib/libgobject-2.0.so.0+0xf783)
    #7 0x7f7d81e7f5e7 in g_signal_emit_valist (/lib/libgobject-



I expected to see a nice stacktrace just like gdb would print it.