[Bug tree-optimization/35200] New: [4.3 Regression] gcc 4.3 failed to compile binutils

[hjl dot tools at gmail dot com]

Gcc 4.3 revision 132310 gives bogus error when compiling binutils
on Linux/ia32:

[hjl@gnu-25 gas]$ /usr/gcc-4.3/bin/gcc -O2 x.i -S -Wall
x.c: In function ‘operand_type_match’:
x.c:1025: warning: likely type-punning may break strict-aliasing rules: object
‘*{unknown}’ of main type ‘unsigned int’ is referenced at or around x.c:1025
and may be aliased to object ‘{unknown}’ of main type ‘unsigned char:1’ which
is referenced at or around x.c:1025.
....

This error is very sensitive to gcc revision as well as the input.
If I remove a blank line in the source, I won't see the error. It is
also OK if I compile it on Linux/Intel64 with -m32.


-- 
           Summary: [4.3 Regression] gcc 4.3 failed to compile binutils
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35200