https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114877
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Joseph, your thoughts on this? Looking at what the libm implementations do, in what I saw in glibc and newlib, it stores 0 to what the second argument points to, but e.g. musl doesn't store anything. And using an uninitialized value is UB, so if musl is conforming, then the testcase is invalid.