Bug 434885

Summary: -fpeephole2 caused "internal compiler error: in final_scan_insn, at final.c:2514"
Product: [Fedora] Fedora Reporter: Haiping Zhao <hzhao>
Component: gcc4Assignee: Jakub Jelinek <jakub>
Status: CLOSED WORKSFORME QA Contact:
Severity: high Docs Contact:
Priority: low    
Version: 4   
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Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2008-03-11 09:47:25 UTC Type: ---
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preprocessed source none

Description Haiping Zhao 2008-02-26 00:08:16 UTC 
Compiling this file:

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>

int main() {
  struct timeval now;
  return now.tv_usec % 15;
}

with this command,

g++ -c -fpeephole2 test.cpp


The problem goes away if "now.tv_usec" is casted to "int" a 32-bit number. So,
it's related to the fact it's a 64-bit integer.
Comment 1 Haiping Zhao 2008-02-26 00:08:16 UTC 
Created attachment 295862 [details]
preprocessed source
Comment 2 petrosyan 2008-02-26 05:07:42 UTC 
Haiping,
Fedora Core 4, 5, and 6 are not maintained anymore. Can you reproduce this bug
on Fedora 7 or Fedora 8? I can not reproduce this on Fedora 8.
Comment 3 Jakub Jelinek 2008-03-11 09:47:25 UTC 
Can't reproduce with current gcc 3.4.x, 4.0.x, 4.1.x, 4.2.x nor 4.3.0.