[Bug fortran/91337] gfortran skips an if statement with some mathematical optimisations with complex numbers.

[chinoune.mehdi at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91337

Chinoune <chinoune.mehdi at hotmail dot com> changed:

           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #3 from Chinoune <chinoune.mehdi at hotmail dot com> ---
Sorry, It wasn't a bug. the compiler is not skipping the if statement.

-fassociative-math : Allow re-association of operands in series of
floating-point operations. This violates the ISO C and C++ language standard by
possibly changing computation result. NOTE: re-ordering may change the sign of
zero as well as ignore NaNs and inhibit or create underflow or overflow (and
thus cannot be used on code
that relies on rounding behavior like (x + 2**52) - 2**52. May also reorder
floating-point comparisons and thus may not be used when ordered comparisons
are required.

-fassociative-math is enabled by -funsafe-math-optimizations .