bpo-30104: Use -fno-strict-aliasing on clang (#1221)

Python/dtoa.c is not compiled correctly with clang 4.0 and
optimization level -O2 or higher, because of an aliasing issue on
the double/ULong[2] union.

LLVM bug report:
https://bugs.llvm.org//show_bug.cgi?id=31928

Victor Stinner committed 9y ago

28205b203a4742c40080b4a2b4b2dcd800716edc

Parent: 791dc83

Committed by GitHub <noreply@github.com> on 4/21/2017, 9:24:34 AM