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| author | Ben Gamari <ben@smart-cactus.org> | 2018-12-10 21:48:51 -0500 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2018-12-11 00:28:15 -0500 |
| commit | dc346674c4b5609e15560820b33e533e73213b32 (patch) | |
| tree | 83667f9a8becb00b7b47169fac0c82383f2f0983 | |
| parent | e6900f081a7bce47b7c6660a6510aeb021751fb1 (diff) | |
| download | haskell-dc346674c4b5609e15560820b33e533e73213b32.tar.gz | |
rts: Disable fallthrough attribute when compiling with Clang
Apparently clang doesn't enable implicitly fallthrough warnings by default
http://llvm.org/viewvc/llvm-project?revision=167655&view=revision when compiling
C and the attribute cause warnings of their own (#16019).
| -rw-r--r-- | includes/Stg.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/includes/Stg.h b/includes/Stg.h index 9b54526342..57cb00d0a4 100644 --- a/includes/Stg.h +++ b/includes/Stg.h @@ -197,7 +197,11 @@ #endif /* Used to mark a switch case that falls-through */ -#if (defined(__GNUC__) && __GNUC__ >= 7) || defined(__clang__) +#if (defined(__GNUC__) && __GNUC__ >= 7) +// N.B. Don't enable fallthrough annotations when compiling with Clang. +// Apparently clang doesn't enable implicitly fallthrough warnings by default +// http://llvm.org/viewvc/llvm-project?revision=167655&view=revision +// when compiling C and the attribute cause warnings of their own (#16019). #define FALLTHROUGH GNU_ATTRIBUTE(fallthrough) #else #define FALLTHROUGH ((void)0) |