8000 Update comment about __sync_lock_test_and_set() bug. · postgrespro/postgres_cluster@e653c71 · GitHub
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Update comment about __sync_lock_test_and_set() bug.
State the earliest known fixed version, so we can someday judge the workaround to be obsolete.
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‎src/include/port/atomics.h

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/*
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* gcc or compatible, including clang and icc. Exclude xlc. The ppc64le "IBM
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* XL C/C++ for Linux, V13.1.2" emulates gcc, but __sync_lock_test_and_set()
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* of one-byte types elicits SIGSEGV.
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* of one-byte types elicits SIGSEGV. That bug was gone by V13.1.5 (2016-12).
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*/
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#if (defined(__GNUC__) || defined(__INTEL_COMPILER)) && !(defined(__IBMC__) || defined(__IBMCPP__))
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#include "port/atomics/generic-gcc.h"

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