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

[shaohua.li at inf dot ethz.ch via Gcc-bugs]

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

--- Comment #5 from Li Shaohua <shaohua.li at inf dot ethz.ch> ---
No, I meant

#pragma pack(1)
struct {
  char a[3];
  int b;
} c;