view dmd2/gnuc.c @ 1318:bac742d3a72d

Make sure this testcase keeps crashing with -O3. Recent optimization improvements made LLVM realize the store-to-null was unavoidable, so it deleted all of main() and replaced it with 'unreachable'. Because the body of main() no longer even contained a return instruction, calling it caused random code to be ran instead. This happened to be the code that links in the ModuleInfo on my machine, which then returned "successfully".
author Frits van Bommel <fvbommel wxs.nl>
date Sat, 09 May 2009 00:55:47 +0200
parents f04dde6e882c
children
line wrap: on
line source


// Put functions in here missing from gnu C

#include "gnuc.h"

int memicmp(const char *s1, const char *s2, int n)
{
    int result = 0;

    for (int i = 0; i < n; i++)
    {	char c1 = s1[i];
	char c2 = s2[i];

	result = c1 - c2;
	if (result)
	{
	    if ('A' <= c1 && c1 <= 'Z')
		c1 += 'a' - 'A';
	    if ('A' <= c2 && c2 <= 'Z')
		c2 += 'a' - 'A';
	    result = c1 - c2;
	    if (result)
		break;
	}
    }
    return result;
}

int stricmp(const char *s1, const char *s2)
{
    int result = 0;

    for (;;)
    {	char c1 = *s1;
	char c2 = *s2;

	result = c1 - c2;
	if (result)
	{
	    if ('A' <= c1 && c1 <= 'Z')
		c1 += 'a' - 'A';
	    if ('A' <= c2 && c2 <= 'Z')
		c2 += 'a' - 'A';
	    result = c1 - c2;
	    if (result)
		break;
	}
	if (!c1)
	    break;
	s1++;
	s2++;
    }
    return result;
}