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macro: call __gcov_dump() before _exit() w/ coverage enabled
_exit() skips at-exit hooks, causing lost coverage from processes utilizing it. Hopefully resolves systemd/systemd-centos-ci#482
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@ -47,6 +47,9 @@ fuzzer_build = want_ossfuzz or want_libfuzzer
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# More items are added later after they have been detected.
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summary({'build mode' : get_option('mode')})
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# GCOV doesn't define any macro when compiled with, so let's define it ourselves
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conf.set10('BUILT_WITH_COVERAGE', get_option('b_coverage'))
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#####################################################################
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# Try to install the git pre-commit hook
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@ -29,6 +29,19 @@
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#define _alignptr_ __attribute__((__aligned__(sizeof(void*))))
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#define _warn_unused_result_ __attribute__((__warn_unused_result__))
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#if defined(BUILT_WITH_COVERAGE) && BUILT_WITH_COVERAGE
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/* We need to explicitly call __gcov_dump() in places where we use _exit(), since
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* _exit() skips at-exit hooks resulting in lost coverage */
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# include <unistd.h>
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extern void __gcov_dump(void);
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_noreturn_ static inline void _coverage__exit(int status) {
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__gcov_dump();
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_exit(status);
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}
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# define _exit(x) _coverage__exit(x)
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#endif
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#if !defined(HAS_FEATURE_MEMORY_SANITIZER)
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# if defined(__has_feature)
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# if __has_feature(memory_sanitizer)
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