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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-09-26 12:27:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-09-26 12:27:17 -0700 |
| commit | 8b07f74c23a0890977a5ae3c0b2c105d7ac3b584 (patch) | |
| tree | 60c0be54d2a1274a2e101c7dd6f139c099f88e66 | |
| parent | f26a24662cd2875f82029e28879a20cea212214c (diff) | |
| parent | e2ffa15b9baa447e444d654ffd47123ba6443ae4 (diff) | |
Merge tag 'core-urgent-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core fix from Ingo Molnar:
"Fix a CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y bug on older Clang versions"
* tag 'core-urgent-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kbuild: Disable CC_HAS_ASM_GOTO_OUTPUT on clang < 17
| -rw-r--r-- | init/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index e3eb63eadc87..ecddb94db8dc 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -99,7 +99,10 @@ config GCC_ASM_GOTO_OUTPUT_BROKEN config CC_HAS_ASM_GOTO_OUTPUT def_bool y depends on !GCC_ASM_GOTO_OUTPUT_BROKEN + # Detect basic support depends on $(success,echo 'int foo(int x) { asm goto ("": "=r"(x) ::: bar); return x; bar: return 0; }' | $(CC) -x c - -c -o /dev/null) + # Detect clang (< v17) scoped label issues + depends on $(success,echo 'void b(void **);void* c(void);int f(void){{asm goto("jmp %l0"::::l0);return 0;l0:return 1;}void *x __attribute__((cleanup(b)))=c();{asm goto("jmp %l0"::::l1);return 2;l1:return 3;}}' | $(CC) -x c - -c -o /dev/null) config CC_HAS_ASM_GOTO_TIED_OUTPUT depends on CC_HAS_ASM_GOTO_OUTPUT |