Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/atomic/stdatomic-exchange-4.c @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 04ced10e8804 |
children |
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/* Test atomic_exchange routines for existence and proper execution on 8-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; long long count, ret; int main () { v = 0; count = 0; if (atomic_exchange_explicit (&v, count + 1, memory_order_relaxed) != count) abort (); count++; if (atomic_exchange_explicit (&v, count + 1, memory_order_acquire) != count) abort (); count++; if (atomic_exchange_explicit (&v, count + 1, memory_order_release) != count) abort (); count++; if (atomic_exchange_explicit (&v, count + 1, memory_order_acq_rel) != count) abort (); count++; if (atomic_exchange_explicit (&v, count + 1, memory_order_seq_cst) != count) abort (); count++; count++; ret = atomic_exchange (&v, count); if (ret != count - 1 || v != count) abort (); return 0; }