diff options
Diffstat (limited to 'clang/lib/Headers/__stddef_unreachable.h')
| -rw-r--r-- | clang/lib/Headers/__stddef_unreachable.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/clang/lib/Headers/__stddef_unreachable.h b/clang/lib/Headers/__stddef_unreachable.h index 3e7fe0197966..518580c92d3f 100644 --- a/clang/lib/Headers/__stddef_unreachable.h +++ b/clang/lib/Headers/__stddef_unreachable.h @@ -7,6 +7,11 @@ *===-----------------------------------------------------------------------=== */ -#ifndef unreachable +/* + * When -fbuiltin-headers-in-system-modules is set this is a non-modular header + * and needs to behave as if it was textual. + */ +#if !defined(unreachable) || \ + (__has_feature(modules) && !__building_module(_Builtin_stddef)) #define unreachable() __builtin_unreachable() #endif |