gcc/tests/smoke-test/tm.c

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extern void *malloc (__SIZE_TYPE__) __attribute__((malloc,transaction_safe));
static int __attribute__((transaction_safe))
something (void)
{
return 0;
}
struct large { int foo[500]; };
int
main (void)
{
int *p;
struct large *lp;
__transaction_atomic {
p = malloc (sizeof (*p) * 100);
lp = malloc (sizeof (*lp) * 100);
/* No instrumentation necessary; P and LP are transaction local. */
p[5] = 123;
lp->foo[66] = 123;
if (something ())
__transaction_cancel;
}
__transaction_relaxed {
++p[5];
}
return ( (p[5] == 124) ? 0 : 1 );
}