1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_COMPILER_TYPES_H
3 #error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead."
6 /* Some compiler specific definitions are overwritten here
10 #ifdef uninitialized_var
11 #undef uninitialized_var
12 #define uninitialized_var(x) x = *(&(x))
15 /* same as gcc, this was present in clang-2.6 so we can assume it works
16 * with any version that can compile the kernel
18 #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
20 #undef __no_sanitize_address
21 #define __no_sanitize_address __attribute__((no_sanitize("address")))
23 /* Clang doesn't have a way to turn it off per-function, yet. */
29 * Not all versions of clang implement the the type-generic versions
30 * of the builtin overflow checkers. Fortunately, clang implements
31 * __has_builtin allowing us to avoid awkward version
32 * checks. Unfortunately, we don't know which version of gcc clang
33 * pretends to be, so the macro may or may not be defined.
35 #undef COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW
36 #if __has_builtin(__builtin_mul_overflow) && \
37 __has_builtin(__builtin_add_overflow) && \
38 __has_builtin(__builtin_sub_overflow)
39 #define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1