https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96913
--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Sergei Trofimovich <sly...@gcc.gnu.org>: https://gcc.gnu.org/g:b843d57c57ac92c9cd38eec7289da2f1ea696f18 commit r10-8844-gb843d57c57ac92c9cd38eec7289da2f1ea696f18 Author: Sergei Trofimovich <siarh...@google.com> Date: Sun Sep 6 12:13:54 2020 +0100 gcov: fix TOPN streaming from shared libraries 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. (cherry picked from commit 4ecf368f4b4223fb2df4f3887429dfbb48852e38)
