[opensuse-factory] gcc-c++-4.7 internal compiler error using optimisation

30 May 2012

      Hello,

I have a program which compiles fine on Opensuse 12.1 (gcc 4.6) with
and without optimisation.

In factory I get an internal compiler error if I use an optimsation
level >0  (e.g. -O1).

My installed gcc packages:
gcc-4.7-1.1.x86_64
gcc47-4.7.0_20120413-2.1.x86_64
gcc47-c++-4.7.0_20120413-2.1.x86_64
gcc-c++-4.7-1.1.x86_64

Compilation output:
$ g++ -O2 test.cpp.
test.cpp: In function ‘uint8_t* findMarker_bin(uint8_t*, const
uint8_t*)’: test.cpp:34:1: internal compiler error: Abgebrochen
Please submit a full bug report,
with preprocessed source if appropriate.

Here is the stripped down program test.cpp:

#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif

#include 
#include <cstdio>

static const int marker[] = { 0xAC, 0xDC, 0xAC, 0xDC };

inline static uint8_t *findMarker_bin(uint8_t * curFilePos,
                                      const uint8_t * const fileEnd)
{
    for (;;) {
        if ((*curFilePos == marker[0]) && (*(curFilePos + 1) ==
marker[1]) && (*(curFilePos + 2) == marker[2])
            && (*(curFilePos + 3) == marker[3])) {
            return curFilePos + 4;
        } else {
            curFilePos++;
            if (curFilePos >= fileEnd - 3) {
                printf("end of mapped file reached!\n");
                return 0;
            }
        }
    }
}

int main(int argc, char **argv)
{
  uint8_t *curPos=NULL, *endPos=NULL;
  curPos = findMarker_bin(curPos, endPos);
  return 0;
}

Does somebody experience similar problems?

Dieter

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dieter

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