David Venhoff
cfcea9ee67
Based off b80915eb99
and compacted into a single commit so that it will fit on the uni git server
16 lines
286 B
C
16 lines
286 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <stdint.h>
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volatile uint64_t x;
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int main(int argc, char *argv[])
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{
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uint64_t old, new = argc;
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(void)argv;
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do {
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old = __sync_val_compare_and_swap(&x, 0, 0);
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} while (!__sync_bool_compare_and_swap(&x, old, new));
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return old == new;
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}
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