https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93959
David Malcolm <dmalcolm at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2020-02-27 Ever confirmed|0 |1 --- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> --- Confirmed on sparc-sun-solaris2.11 (gcc211.fsffrance.org) -fdump-ipa-analyzer shows it's failing to match "free" because it's using std::free, not free: test_1 (void * ptr) { <bb 2> : std::free (ptr_2(D)); std::free (ptr_2(D)); return; } stdlib.h has "using std::free;" which presumably is what's pulling things in. Explicitly prefixing with "::" doesn't help. Converting to __builtin_free does.