[Bug tree-optimization/21894] New: gcc crashes with -O1 on a call to nested function

[fjahanian at apple dot com]

Following test ICEs with gcc mainline when compiled with -O1. Test was done on 
apple-ppc-darwin.
% gcc -c -O1 bad.c
bad.c: In function 'CheckFile':
bad.c:2: internal compiler error: Bus error
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.

/* TEST */
typedef unsigned char uchar;
static void CheckFile () {
     uchar *p;
     uchar tagname[10]; uchar * a = tagname;

      void validate(uchar const * pp, uchar const * q){
        uchar const * p = pp;
        if (a == tagname+4)
          {
             uchar const * x = p;
          }
      }

      while(1){
            if(a == tagname)
              goto slip; 
              if (*p == '\"') 
                {
                  uchar const * const q = ++p; 
                  validate(q, p++);
                }
        }
  slip:
        ;
}

-- 
           Summary: gcc crashes with -O1 on a call to nested function
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: fjahanian at apple dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: apple-ppa-darwin
  GCC host triplet: apple-ppc-darwin
GCC target triplet: apple-ppa-darwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21894