[Bug middle-end/88576] -fno-math-errno causes GCC to consider that malloc does not set errno

[zackw at panix dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88576

--- Comment #14 from Zack Weinberg <zackw at panix dot com> ---
I don't see why it would _ever_ make sense for -fno-alloc-errno to default to
the setting of -fno-math-errno.  The math functions and the memory allocation
functions are independent components of the C library.  Each toggle's default
should be settable independently by the target configuration.