Make an -fsanitize=undefined workaround conditional

...that had been introduced with b5cb4935c268f12e63b61e035b455b0a59e67aa2 "Work
around undef conversion of large double to float" but should no longer be
necessary with
<https://github.com/llvm/llvm-project/commit/9e52c43090f8cd980167bbd2719878ae36bcf6b5>
"Treat the range of representable values of floating-point types as [-inf, +inf]
not as [-max, +max]" added towards Clang 9.

Thanks to Mike Kaganski for pointing me at this old code and at Richard Smith's
comment at
<https://cplusplusmusings.wordpress.com/2013/03/26/testing-libc-with-fsanitizeundefined/>.

Change-Id: I8ecf115fcf6b1ebf621cb4567f8d31ac9b10ef1c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/130531
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

0 files changed, 0 insertions, 0 deletions