Re: test-math.c:89:3: runtime error: division by zero

[Bruno Haible]

Jeffrey Walton wrote:
> Let's see what the GCC folks recommend: "GCC and division by 0 under
> sanitizers", https://gcc.gnu.org/pipermail/gcc-help/2020-March/138746.html.

The way I interpret their answer
https://gcc.gnu.org/pipermail/gcc-help/2020-March/138747.html
is:
1) You need to distinguish integer division by zero and floating-point
   division by zero.
2) For floating-point division by zero GCC warns but should not warn.
   You should enter a bug report about this.
3) The undefined-behaviour sanitizer should report integer division by zero
   but not floating-point division by zero ("as it can be a legitimate way
   of obtaining infinities and NaNs").

In the gnulib code, test-math.c:89, we clearly have a floating-point
division by zero.

Bruno