On Tue, 2023-07-11 at 14:33 +0200, henri.cloetens@xxxxxxxxxx wrote: > Hello Jonathan, > > Can you please explain your point of view ?. The C or C++ standard does not allow accessing a float object via a lvalue of type int. So the code is invalid. It may seem to work (and GCC struggles to make this case work because in this case the programmer's intention is quite clear despite the code in not valid), but generally doing "type punning" like this will blow up. Recently there has been too many invalid GCC "bug" reports caused by "type punning": - https://gcc.gnu.org/PR110368 - https://gcc.gnu.org/PR109519 - https://gcc.gnu.org/PR109493 ... ... So please stop telling other people to write code like this. It's not related to how the FP value is represented in the memory, it's simply "not allowed by the standard". -- Xi Ruoyao <xry111@xxxxxxxxxxx> School of Aerospace Science and Technology, Xidian University
