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| author | Michael Bestas <mkbestas@lineageos.org> | 2021-05-31 03:09:03 +0300 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2021-05-31 03:09:03 +0300 |
| commit | 0ce166e3c4e576ae072d950006a937931df8ca3c (patch) | |
| tree | 87428d6651cc3cd42c586331c67590f3a9e2c578 /include/linux/compiler-clang.h | |
| parent | a4940e8fb458a45644126d132c2d5b74719df8df (diff) | |
| parent | 3628cdd31199df6519ecad709f5cc8be9401f93e (diff) | |
Merge branch 'android-4.4-p' of https://android.googlesource.com/kernel/common into lineage-18.1-caf-msm8998
This brings LA.UM.9.2.r1-03300-SDMxx0.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
3628cdd31199d Merge 4.4.270 into android-4.4-p
Conflicts:
drivers/mmc/core/core.c
drivers/usb/core/hub.c
kernel/trace/trace.c
Change-Id: I6b81471122341f9769ce9c65cbd0fedd5e908b38
Diffstat (limited to 'include/linux/compiler-clang.h')
| -rw-r--r-- | include/linux/compiler-clang.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index de179993e039..6851c4214ac6 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -15,3 +15,17 @@ * with any version that can compile the kernel */ #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) + +/* + * Not all versions of clang implement the the type-generic versions + * of the builtin overflow checkers. Fortunately, clang implements + * __has_builtin allowing us to avoid awkward version + * checks. Unfortunately, we don't know which version of gcc clang + * pretends to be, so the macro may or may not be defined. + */ +#undef COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW +#if __has_builtin(__builtin_mul_overflow) && \ + __has_builtin(__builtin_add_overflow) && \ + __has_builtin(__builtin_sub_overflow) +#define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1 +#endif |