Re: [HACKERS] GIN FailedAssertions on Itanium2 with Intel compiler

[Teodor Sigaev]

Simple illustration:

#include <stdio.h>
#include <stdlib.h>

static char SI = 0;

static int
cmp(const void *a, const void *b) {
    puts("CALL cmp");
    if ( *(int*)a == *(int*)b ) {
        puts("SET SI = 1");
        SI = 1;
        return 0;
    }
    return ( *(int*)a > *(int*)b ) ? 1 : -1;
}

int
main(int argn, char *argv[]) {
    int         a[]={43,43};

    SI = 0;
    qsort(a, sizeof(a)/sizeof(int),  sizeof(int), cmp);

    if ( SI )
        puts("OK");
    else
        puts("BUG: SI==0");

    return 0;
}


% icc -O2 -o 1 1.c && ./1
CALL cmp
SET SI = 1
BUG: SI==0
% icc -O1 -o 1 1.c && ./1
CALL cmp
SET SI = 1
OK


--
Teodor Sigaev                                   E-mail: [EMAIL PROTECTED]
                                                   WWW: http://www.sigaev.ru/

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