https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98630
--- Comment #5 from Karine EM <k.even-mendoza at imperial dot ac.uk> --- This is an automatically reduced program. If GCC will give the Wuninitialized warning I can reduce the original program again, taking it into account. I attached the long program in case you find it helpful. It also ends with Seg-Fault for gcc-10 but not with gcc-7, gcc-8, gcc-9 for example. G++-10 doesn't give uninitialized warning on the long program.