[nasm:nasm-2.12.xx] configure.in: add -fwrapv to gcc and compatible compilers

[nasm-bot f. H. P. A. <hp...@zy...>]

Commit-ID:  8d9f591005be5d9e973687af2472a8f9f6c525ae
Gitweb:     http://repo.or.cz/w/nasm.git?a=commitdiff;h=8d9f591005be5d9e973687af2472a8f9f6c525ae
Author:     H. Peter Anvin <hp...@zy...>
AuthorDate: Sat, 27 Feb 2016 00:15:13 -0800
Committer:  H. Peter Anvin <hp...@zy...>
CommitDate: Sat, 27 Feb 2016 00:15:13 -0800

configure.in: add -fwrapv to gcc and compatible compilers

Add the -fwrapv to gcc and compatible C compilers, to enforce
deterministic 2's-complement behavior with regards to signed and
unsigned integer types.

Signed-off-by: H. Peter Anvin <hp...@zy...>


---
 configure.in | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.in b/configure.in
index 6319206..01c0f07 100644
--- a/configure.in
+++ b/configure.in
@@ -79,6 +79,7 @@ dnl If we have gcc, add appropriate options
 PA_ADD_CFLAGS([-W])
 PA_ADD_CFLAGS([-Wall])
 PA_ADD_CFLAGS([-std=c99])
+PA_ADD_CFLAGS([-fwrapv])
 
 dnl Look for programs...
 AC_CHECK_PROGS(NROFF,    nroff,    false)