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Fix TSAN s2n_shutdown failures (#4055)
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Original file line number | Diff line number | Diff line change |
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/* | ||
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
* | ||
* Licensed under the Apache License, Version 2.0 (the "License"). | ||
* You may not use this file except in compliance with the License. | ||
* A copy of the License is located at | ||
* | ||
* http://aws.amazon.com/apache2.0 | ||
* | ||
* or in the "license" file accompanying this file. This file is distributed | ||
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either | ||
* express or implied. See the License for the specific language governing | ||
* permissions and limitations under the License. | ||
*/ | ||
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#include <signal.h> | ||
#include <stddef.h> | ||
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int main() { | ||
/* Atomic builtins are supported by gcc 4.7.3 and later. */ | ||
sig_atomic_t atomic = 0, value = 1; | ||
__atomic_store(&atomic, &value, __ATOMIC_RELAXED); | ||
__atomic_load(&atomic, &value, __ATOMIC_RELAXED); | ||
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/* _Static_assert is supported for C99 by gcc 4.6 and later, | ||
* so using it here shouldn't limit use of the atomic builtins. */ | ||
_Static_assert(__atomic_always_lock_free(sizeof(sig_atomic_t), NULL), | ||
"Atomic operations in this environment would require locking"); | ||
return 0; | ||
} |
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-Werror |
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