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Before the change gcc did not stream correctly TOPN counters if counters belonged to a non-local shared object. As a result zero-section optimization generated TOPN sections in a form not recognizable by '__gcov_merge_topn'. The problem happens because in a case of multiple shared objects '__gcov_merge_topn' function is present in address space multiple times (once per each object). The fix is to never rely on function address and predicate on TOPN counter types. libgcc/ChangeLog: PR gcov-profile/96913 * libgcov-driver.c (write_one_data): Avoid function pointer comparison in TOP streaming decision.
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