[Bug sanitizer/105141] #pragma pack(1) causes incorrect UBSAN warning

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105141

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Without pragma pack that is correct, the compiler inserts padding so that c.b
is properly aligned.