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| author | Matthias Braun <matze@braunis.de> | 2017-04-24 18:41:00 +0000 |
|---|---|---|
| committer | Matthias Braun <matze@braunis.de> | 2017-04-24 18:41:00 +0000 |
| commit | 285f88d4a3b99dcfef3d5c00eb0db50127ac27e3 (patch) | |
| tree | fa7e0dba33399dbeef222a5c0fd92ae8f02127f8 /clang/lib/Lex/Pragma.cpp | |
| parent | 0d447d514a5b46d4de8abf95d1f8cefc092b1ee8 (diff) | |
| download | bcm5719-llvm-285f88d4a3b99dcfef3d5c00eb0db50127ac27e3.tar.gz bcm5719-llvm-285f88d4a3b99dcfef3d5c00eb0db50127ac27e3.zip | |
Pragma: Fix DebugOverflowStack() resulting in endless loop.
Drive-by fix (noticed while working on https://reviews.llvm.org/D32205):
DebugOverflowStack() is supposed to provoke a stack overflow, however
LLVM was smart enough to use the red-zone and fold the load into a tail
jump on x86_64 optimizing this to an endless loop instead of a stack
overflow.
llvm-svn: 301218
Diffstat (limited to 'clang/lib/Lex/Pragma.cpp')
| -rw-r--r-- | clang/lib/Lex/Pragma.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/clang/lib/Lex/Pragma.cpp b/clang/lib/Lex/Pragma.cpp index f81eaa31e9e..87e105d1d03 100644 --- a/clang/lib/Lex/Pragma.cpp +++ b/clang/lib/Lex/Pragma.cpp @@ -989,9 +989,9 @@ struct PragmaDebugHandler : public PragmaHandler { #ifdef _MSC_VER #pragma warning(disable : 4717) #endif - static void DebugOverflowStack() { - void (*volatile Self)() = DebugOverflowStack; - Self(); + static void DebugOverflowStack(void (*P)() = nullptr) { + void (*volatile Self)(void(*P)()) = DebugOverflowStack; + Self(reinterpret_cast<void(*)()>(Self)); } #ifdef _MSC_VER #pragma warning(default : 4717) |
