libgcov: improve profile reproducibility
libgcc/ChangeLog: PR gcov-profile/98739 * libgcov.h (gcov_topn_add_value): Do not train when we have a merged profile with a negative number of total value.
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@ -443,7 +443,13 @@ gcov_topn_add_value (gcov_type *counters, gcov_type value, gcov_type count,
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int use_atomic, int increment_total)
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{
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if (increment_total)
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gcov_counter_add (&counters[0], 1, use_atomic);
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{
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/* In the multi-threaded mode, we can have an already merged profile
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with a negative total value. In that case, we should bail out. */
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if (counters[0] < 0)
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return 0;
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gcov_counter_add (&counters[0], 1, use_atomic);
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}
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struct gcov_kvp *prev_node = NULL;
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struct gcov_kvp *minimal_node = NULL;
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