[Bug tree-optimization/21399] [4.1 Regression] libstdc++ 12077.cc ICE

[steven at gcc dot gnu dot org]

------- Additional Comments From steven at gcc dot gnu dot org  2005-05-16 00:10 -------
this fails for me with -O in CCP.  In .t18.copyrename1 we have: 
;; Function void f(FILE*) (_Z1fP6__FILE) 
 
 
Partition map 
 
 
void f(FILE*) (fileD.2015) 
Eh tree: 
   1 allowed_exceptions tree_label:<L0> 
{ 
  const charD.3 * strD.2018; 
 
  # BLOCK 0 
  # PRED: ENTRY (fallthru) 
  strD.2018_1 = &"a"[0]; 
  #   TMT.1D.2025_4 = V_MAY_DEF <TMT.1D.2025_3>; 
  fputs (strD.2018_1, fileD.2015_2); 
  goto <bb 2> (<L1>); 
  # SUCC: 1 (ab,eh) 2 (fallthru) 
 
  # BLOCK 1 
  # PRED: 0 (ab,eh) 
<L0>:; 
  #   VUSE <TMT.1D.2025_4>; 
  __cxa_call_unexpected (<<<exception object>>>); 
  # SUCC: 
 
  # BLOCK 2 
  # PRED: 0 (fallthru) 
<L1>:; 
  return; 
  # SUCC: EXIT 
 
} 
 
 
In .t18.ccp, we have the following replacement: 
Replaced fputs (str_1, file_2); 
 with __builtin_fputc (97, file_2); 
which is probably to blame for this. 
 

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21399