database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-30 11:03:19 +03:00
Code Activity

Disable excessive FP optimization by recent versions of gcc.

Browse Source 
Suggested solution from Tom Lane. Problem discovered, probably not
for the first time, while testing the mingw-w64 32 bit compiler.

Backpatched to all live branches.
This commit is contained in:
Andrew Dunstan
2011-12-14 17:11:44 -05:00
parent 81f4e6cd27
commit 01e80a0c28
2 changed files with 52 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
configure.in
View File

@ -433,6 +433,8 @@ if test "$GCC" = yes -a "$ICC" = no; then
PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
# Disable optimizations that assume no overflow; needed for gcc 4.3+
PGAC_PROG_CC_CFLAGS_OPT([-fwrapv])
# Disable FP optimizations that cause various errors on gcc 4.5+ or maybe 4.6+
PGAC_PROG_CC_CFLAGS_OPT([-fexcess-precision=standard])
elif test "$ICC" = yes; then
# Intel's compiler has a bug/misoptimization in checking for
# division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.