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| author | Prabhakar Kushwaha <prabhakar@freescale.com> | 2015-07-02 12:00:17 +0530 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2015-12-15 13:41:56 +0100 |
| commit | a76377388ed74c69a9e0c129d31cb953b34ebbc5 (patch) | |
| tree | 00b4d66a862dbe341cffcd629678444e305c3fc4 | |
| parent | 1ef4a29e8cea0239411dde64f9617ad76248fd02 (diff) | |
Makefile:Add GCC flag -fno-delete-null-pointer-checks
-fdelete-null-pointer-checks flag controls global dataflow analyses and
eliminate useless checks for null pointers; It assume that if a pointer is
checked after it has already been dereferenced, it cannot be null.
This flag is enabled by default.
gcc v4.9 has more optimizations added to this option. Hence it is very
aggressive with GCC v4.9 series. Add -fno-delete-null-pointer-checks to
disable the optimization
Signed-off-by: Rohit Dharmakan <rohitarulraj@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
(cherry picked from commit 687a7518a1b1e40e005711603dcb14e0f6942d6d)
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
| -rw-r--r-- | Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -565,6 +565,7 @@ KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' endif KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) +KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks) KBUILD_CFLAGS += -g # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format> |