[Bug debug/50132] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2234 with -fno-asynchronous-unwind-tables and long double

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50132

             Bug #: 50132
           Summary: [4.7 Regression] ICE: in maybe_record_trace_start, at
                    dwarf2cfi.c:2234 with -fno-asynchronous-unwind-tables
                    and long double
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: zso...@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 25056
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25056
reduced testcase

Compiler output:
$ gcc -Os -fno-asynchronous-unwind-tables -g testcase.c   
testcase.c: In function 'foo':
testcase.c:7:1: internal compiler error: in maybe_record_trace_start, at
dwarf2cfi.c:2234
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r177889 - crash
r177543 - crash
r173150 - OK