Bug#254659: gcc-2.95 for i386 loop strength reduction bug.

[Minoura Makoto <minoura@valinux.co.jp>]

Package: gcc-2.95
Version: 1:2.95.4-11woody1
Severity: normal

The attatched C program will loop infinitely when compiled with
-O2 flag.

Workaround:
  1. -fno-inline
  2. -fno-strength-reduce
  3. use gcc-3.0

*** a.c
#include <stdio.h>

inline void
h1(int *p) {

        printf("%p\n", p);
}

void
h(int* p, int i) {
        int j;

        for(j = 0; j < 16; j++) {
                h1(p + j);
        }
}

int
main(int argc, char **argv) {

	h((int *)0x7fffffc0, 0);
        exit(0);
}


-- System Information
Debian Release: 3.0
Architecture: i386
Kernel: Linux brer 2.4.26-brer #2 SMP Thu May 27 11:25:10 JST 2004 i686
Locale: LANG=C, LC_CTYPE=C

Versions of packages gcc-2.95 depends on:
ii  binutils               2.12.90.0.1-4     The GNU assembler, linker and bina
ii  cpp-2.95               1:2.95.4-11woody1 The GNU C preprocessor.
ii  gcc                    2:2.95.4-14       The GNU C compiler.
ii  libc6                  2.2.5-11.5        GNU C Library: Shared libraries an