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toolchain: llvm: Use clang's __INTN_C/__UINTN_C macros for clang 20+ #87717

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Merged
merged 1 commit into from
Mar 31, 2025
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toolchain: llvm: Use clang's __INTN_C/__UINTN_C macros for clang 20+ #87717

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8 changes: 8 additions & 0 deletions include/zephyr/toolchain/llvm.h
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,12 @@
*/
#ifdef CONFIG_MINIMAL_LIBC

/*
* Predefined __INTN_C/__UINTN_C macros are provided by clang starting in version 20.
* Avoid redefining these macros if a sufficiently modern clang is being used.
*/
#if __clang_major__ < 20

#define __int_c(v, suffix) v ## suffix
#define int_c(v, suffix) __int_c(v, suffix)
#define uint_c(v, suffix) __int_c(v ## U, suffix)
Expand Down Expand Up @@ -132,6 +138,8 @@
#define __INTMAX_C(x) int_c(x, __INTMAX_C_SUFFIX__)
#define __UINTMAX_C(x) int_c(x, __UINTMAX_C_SUFFIX__)

#endif /* __clang_major__ < 20 */

#endif /* CONFIG_MINIMAL_LIBC */

#endif /* ZEPHYR_INCLUDE_TOOLCHAIN_LLVM_H_ */
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