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another attempt to check word alignment

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@37203 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
rfm 2013-10-07 10:36:43 +00:00
parent 39b14aa9d6
commit f236bb6bfb
1 changed files with 29 additions and 13 deletions
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42
config/config.align.c
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@ -10,18 +10,34 @@
int main ()
{
char buf[32];
char *ptr = buf;
short sval = 4;
int ival = 3;
if (0 == ((int)ptr % 2))
{
ptr++;
}
*(short *)ptr = sval;
*(int *)(ptr + sizeof(short)) = ival;
ptr[sizeof(short) + sizeof(int)] = 0;
puts (ptr); /* force compiler not to optimise out the above assignments */
exit (0);
char *buf = malloc(30);
void *v;
int *sp;
int *sq;
int *ip;
int *iq;
int i;
for (i = 0 ; i < 30; i++)
{
buf[i] = i;
}
v = buf;
sp = (short*)(v + 1);
sq = (short*)(v + 2);
if (*sp == *sq)
{
return 1;
}
ip = (int*)(v + 1);
iq = (int*)(v + 2);
if (*ip == *iq)
{
return 1;
}
return 0;
}