1 #ifndef __LINUX_COMPILER_H
2 #error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead."
5 /* Some compiler specific definitions are overwritten here
9 #ifdef uninitialized_var
10 #undef uninitialized_var
11 #define uninitialized_var(x) x = *(&(x))
14 /* same as gcc, this was present in clang-2.6 so we can assume it works
15 * with any version that can compile the kernel
17 #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
19 #undef __no_sanitize_address
20 #define __no_sanitize_address __attribute__((no_sanitize("address")))
22 /* Clang doesn't have a way to turn it off per-function, yet. */
28 * Not all versions of clang implement the the type-generic versions
29 * of the builtin overflow checkers. Fortunately, clang implements
30 * __has_builtin allowing us to avoid awkward version
31 * checks. Unfortunately, we don't know which version of gcc clang
32 * pretends to be, so the macro may or may not be defined.
34 #undef COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW
35 #if __has_builtin(__builtin_mul_overflow) && \
36 __has_builtin(__builtin_add_overflow) && \
37 __has_builtin(__builtin_sub_overflow)
38 #define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1