[Bug optimization/12899] New: [tree-ssa] ICE in cprop_into_phis

[falk at debian dot org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12899

           Summary: [tree-ssa] ICE in cprop_into_phis
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: falk at debian dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: alphaev68-unknown-linux-gnu
  GCC host triplet: alphaev68-unknown-linux-gnu
GCC target triplet: alphaev68-unknown-linux-gnu

This first produced the same ICE as Bug 12870, but now gives a different
message. Does not occur at -O0.

gcc version 3.5-tree-ssa 20031104 (merged 20031026)

falk@juist:/tmp% cat test.c
void
bb_getopt_ulflags (char *s)
{
  for (;;)
    if (s[1])
      do
        s++;
      while (*s);
}

falk@juist:/tmp% gcc -O -c test.c
test.c: In function `bb_getopt_ulflags':

test.c:3: internal compiler error: in cprop_into_phis, at tree-ssa-dom.c:1781
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.