https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113617
--- Comment #26 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> --- PS: I can confirm two things: 1. Your patch above is still necessary 2. In conjunction with the darwin-specific fix below, the testcase now passes: diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp index ae33c4f1e3a..467b539b20d 100644 --- a/gcc/testsuite/lib/target-supports.exp +++ b/gcc/testsuite/lib/target-supports.exp @@ -1390,7 +1390,7 @@ proc check_effective_target_shared { } { # here to be undefined. set extra_flags "" if { [istarget *-*-darwin\[912\]*] } { - set extra_flags "-Wl,-U,_foo,-U,_bar" + set extra_flags "-Wl,-U,_foo,-U,_bar,-U,__Z3foov" } # Note that M68K has a multilib that supports -fpic but not # -fPIC, so we need to check both. We test with a program that