https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105910
--- Comment #2 from Karine EM <k.even-mendoza at imperial dot ac.uk> --- It is probably the case: gcc-10 just compiles the program (as it is a UB) which crashes with "Abort" when trying to actually run this program; llvm returns an error: test4.c:4:13: error: argument value 524288 is outside the valid range [0, 65535] I think instead of an ICE, any of the options is a good solution.
