Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/atomic/stdatomic-compare-exchange-4.c @ 152:2b5abeee2509
update gcc11
author | anatofuz |
---|---|
date | Mon, 25 May 2020 07:50:57 +0900 |
parents | 04ced10e8804 |
children |
line wrap: on
line source
/* Test atomic_compare_exchange routines for existence and proper execution on 2-byte values with each valid memory model. */ /* { dg-do run } */ /* { dg-options "-std=c11 -pedantic-errors" } */ #include <stdatomic.h> extern void abort (void); _Atomic long long v = ATOMIC_VAR_INIT (0); long long expected = 0; long long max = ~0LL; long long desired = ~0LL; long long zero = 0; int main () { if (!atomic_compare_exchange_strong_explicit (&v, &expected, max, memory_order_relaxed, memory_order_relaxed)) abort (); if (expected != 0) abort (); if (atomic_compare_exchange_strong_explicit (&v, &expected, 0, memory_order_acquire, memory_order_relaxed)) abort (); if (expected != max) abort (); if (!atomic_compare_exchange_strong_explicit (&v, &expected, 0, memory_order_release, memory_order_acquire)) abort (); if (expected != max) abort (); if (v != 0) abort (); if (atomic_compare_exchange_weak_explicit (&v, &expected, desired, memory_order_acq_rel, memory_order_acquire)) abort (); if (expected != 0) abort (); if (!atomic_compare_exchange_strong_explicit (&v, &expected, desired, memory_order_seq_cst, memory_order_seq_cst)) abort (); if (expected != 0) abort (); if (v != max) abort (); v = 0; if (!atomic_compare_exchange_strong (&v, &expected, max)) abort (); if (expected != 0) abort (); if (atomic_compare_exchange_strong (&v, &expected, zero)) abort (); if (expected != max) abort (); if (!atomic_compare_exchange_strong (&v, &expected, zero)) abort (); if (expected != max) abort (); if (v != 0) abort (); if (atomic_compare_exchange_weak (&v, &expected, desired)) abort (); if (expected != 0) abort (); if (!atomic_compare_exchange_strong (&v, &expected, desired)) abort (); if (expected != 0) abort (); if (v != max) abort (); return 0; }