diff mbox series

[V2,3/3] Makefile: add -Wstrict-overflow=5 to CFLAGS

Message ID 1545836068-7824-3-git-send-email-william.c.roberts@intel.com (mailing list archive)
State Not Applicable
Headers show
Series [V2,1/3] Makefile: fix _FORTIFY_SOURCE redefined build error | expand

Commit Message

William Roberts Dec. 26, 2018, 2:54 p.m. UTC 
From: William Roberts <william.c.roberts@intel.com>

Build with strict overflow checking enabled. If the compiler optimizes
code that could be removed due to undefined signed overflow, then the
compiler will issue a warning.

Signed-off-by: William Roberts <william.c.roberts@intel.com>
---
 libselinux/src/Makefile   | 3 ++-
 libselinux/utils/Makefile | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/libselinux/src/Makefile b/libselinux/src/Makefile
index 1a9223c0027d..8891086e4af6 100644
--- a/libselinux/src/Makefile
+++ b/libselinux/src/Makefile
@@ -64,7 +64,8 @@  ifeq ($(COMPILER), gcc)
 EXTRA_CFLAGS = -fipa-pure-const -Wlogical-op -Wpacked-bitfield-compat -Wsync-nand \
 	-Wcoverage-mismatch -Wcpp -Wformat-contains-nul -Wnormalized=nfc -Wsuggest-attribute=const \
 	-Wsuggest-attribute=noreturn -Wsuggest-attribute=pure -Wtrampolines -Wjump-misses-init \
-	-Wno-suggest-attribute=pure -Wno-suggest-attribute=const -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
+	-Wno-suggest-attribute=pure -Wno-suggest-attribute=const -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 \
+	-Wstrict-overflow=5
 else
 EXTRA_CFLAGS = -Wunused-command-line-argument
 endif
diff --git a/libselinux/utils/Makefile b/libselinux/utils/Makefile
index e7a75121f049..361506384d08 100644
--- a/libselinux/utils/Makefile
+++ b/libselinux/utils/Makefile
@@ -33,7 +33,7 @@  CFLAGS ?= -O -Wall -W -Wundef -Wformat-y2k -Wformat-security -Winit-self -Wmissi
           -Wno-format-nonliteral -Wframe-larger-than=$(MAX_STACK_SIZE) -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 \
           -fstack-protector-all --param=ssp-buffer-size=4 -fexceptions \
           -fasynchronous-unwind-tables -fdiagnostics-show-option -funit-at-a-time \
-          -Werror -Wno-aggregate-return -Wno-redundant-decls \
+          -Werror -Wno-aggregate-return -Wno-redundant-decls -Wstrict-overflow=5 \
           $(EXTRA_CFLAGS)
 
 LD_SONAME_FLAGS=-soname,$(LIBSO),-z,defs,-z,relro