[Bug debug/120938] discriminators are not useful in statements doing multiple calls

[hubicka at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120938

Jan Hubicka <hubicka at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #9 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
This is bug in create_gcov tool fixed by the following:

diff --git a/util/symbolize/addr2line_inlinestack.cc
b/util/symbolize/addr2line_inlinestack.cc
index f68f6e1..8eeb8bd 100644
--- a/util/symbolize/addr2line_inlinestack.cc
+++ b/util/symbolize/addr2line_inlinestack.cc
@@ -493,6 +493,12 @@ void InlineStackHandler::ProcessAttributeSigned(
         subprogram_stack_.back()->set_callsite_line(data);
         break;

+      // In case discriminator is implicit const, it is processed as signed
+      // rather then unsigned value.
+      case DW_AT_GNU_discriminator:
+        CHECK(form == DW_FORM_implicit_const);
+        subprogram_stack_.back()->set_callsite_discr(data);
+        break;
       default:
         break;
     }