[Bug bootstrap/50686] [4.7 regression] IRIX 6.5 bootstrap failure: ICE in in lookup_cfa_1, at dwarf2cfi.c:595

[ro at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50686

Rainer Orth <ro at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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  Attachment #25473|0                           |1
        is obsolete|                            |

--- Comment #20 from Rainer Orth <ro at gcc dot gnu.org> 2011-11-21 12:21:35 UTC ---
Created attachment 25871
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25871
reduced testcase

I've now been able to reproduce the ICE with a 32-bit i386-pc-solaris2.11 x
mips-sgi-irix6.5 cross compiler, at the same time massively reducing the
testcase:

$ ./cc1plus -fpreprocessed pr50686.ii -quiet -g -O2
pr50686.ii: In function 'int maybe_adjust_start_pc(JCF*, int, int, int)':
pr50686.ii:68:1: internal compiler error: in maybe_record_trace_start, at
dwarf2cfi.c:2244

I haven't been able to investigate further since I've been busy with several
other breakages this weekend, so I'd appreciate if you could have a look
yourself.

Thanks.
  Rainer