[Bug bootstrap/37441] [4.4 regression] dwarf2 unwind info patches produce undefined symbols

["ro at techfak dot uni-bielefeld dot de" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #4 from ro at techfak dot uni-bielefeld dot de  2008-09-11 11:23 -------
Subject: Re:  [4.4 regression] dwarf2 unwind info patches produce undefined
symbols

jakub at gcc dot gnu dot org writes:

> references undefined label.  I'm afraid at least until some support is added to
> gas to handle that, we should:
> #ifdef MIPS_DEBUGGING_INFO
>   return false;
> #endif
> early in dwarf2out_do_cfi_asm.  Wonder why alpha defines MIPS_DEBUGGING_INFO
> too
> and if e.g. alpha-linux needs to emit DW_AT_MIPS_fde attributes.

The following patch

Index: gcc/dwarf2out.c
===================================================================
--- gcc/dwarf2out.c     (revision 140226)
+++ gcc/dwarf2out.c     (working copy)
@@ -139,6 +139,9 @@ dwarf2out_do_cfi_asm (void)

   if (!flag_dwarf2_cfi_asm || !dwarf2out_do_frame ())
     return false;
+#ifdef MIPS_DEBUGGING_INFO
+  return false;
+#endif
   if (!eh_personality_libfunc)
     return true;
   if (!HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)

allowed for the bootstrap to complete.  The testsuite is still running;
when it's done, I'll submit it to gcc-patches.

        Rainer


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37441