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-rw-r--r--lib/Target/CBackend/Writer.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp
index 4e86c6fec0..904101287a 100644
--- a/lib/Target/CBackend/Writer.cpp
+++ b/lib/Target/CBackend/Writer.cpp
@@ -813,7 +813,7 @@ static void generateCompilerSpecificCode(std::ostream& Out) {
<< "extern void *__builtin_alloca(unsigned int);\n"
<< "#endif\n"
<< "#define alloca(x) __builtin_alloca(x)\n"
- << "#elif defined(__FreeBSD__)\n"
+ << "#elif defined(__FreeBSD__) || defined(__OpenBSD__)\n"
<< "#define alloca(x) __builtin_alloca(x)\n"
<< "#elif !defined(_MSC_VER)\n"
<< "#include <alloca.h>\n"