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| author | das <das@FreeBSD.org> | 2010-12-03 00:05:49 +0000 |
|---|---|---|
| committer | das <das@FreeBSD.org> | 2010-12-03 00:05:49 +0000 |
| commit | c282b1e643737544893794ba6246efd065e2076e (patch) | |
| tree | ed32e272ca8ae6b6a8d9203df143b25951469006 | |
| parent | dc1c4b92702120dc06348d91c97ca533d7a27bc6 (diff) | |
| download | FreeBSD-src-c282b1e643737544893794ba6246efd065e2076e.zip FreeBSD-src-c282b1e643737544893794ba6246efd065e2076e.tar.gz | |
Disable gcc's built-in rint() function when compiling s_nearbyint.c.
It results in incorrect optimizations that break nearbyint().
PR: 143358
Reviewed by: bde
| -rw-r--r-- | lib/msun/Makefile | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/msun/Makefile b/lib/msun/Makefile index 87bd954..929af97 100644 --- a/lib/msun/Makefile +++ b/lib/msun/Makefile @@ -113,6 +113,12 @@ COMMON_SRCS:= ${COMMON_SRCS:N${i:R}.c} .endfor .endif +# Some files need certain gcc built-in functions to be disabled, since gcc's +# model of the functions bogusly assumes -fno-trapping-math. +XRINT_CFLAGS= -fno-builtin-rint -fno-builtin-rintf -fno-builtin-rintl +CFLAGS+= ${XRINT_CFLAGS} +XRINT_CFLAGS:= ${.IMPSRC:M*/s_nearbyint.c:C/^.+$/${XRINT_CFLAGS}/:C/^$//} + SRCS= ${COMMON_SRCS} ${ARCH_SRCS} INCS= fenv.h math.h |
