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-rw-r--r--contrib/llvm-project/clang/lib/Headers/vadefs.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/contrib/llvm-project/clang/lib/Headers/vadefs.h b/contrib/llvm-project/clang/lib/Headers/vadefs.h
new file mode 100644
index 000000000000..b6175684469c
--- /dev/null
+++ b/contrib/llvm-project/clang/lib/Headers/vadefs.h
@@ -0,0 +1,51 @@
+/* ===-------- vadefs.h ---------------------------------------------------===
+ *
+ * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+ * See https://llvm.org/LICENSE.txt for license information.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+/* Only include this if we are aiming for MSVC compatibility. */
+#ifndef _MSC_VER
+#include_next <vadefs.h>
+#else
+
+#ifndef __clang_vadefs_h
+#define __clang_vadefs_h
+
+#include_next <vadefs.h>
+
+/* Override macros from vadefs.h with definitions that work with Clang. */
+#ifdef _crt_va_start
+#undef _crt_va_start
+#define _crt_va_start(ap, param) __builtin_va_start(ap, param)
+#endif
+#ifdef _crt_va_end
+#undef _crt_va_end
+#define _crt_va_end(ap) __builtin_va_end(ap)
+#endif
+#ifdef _crt_va_arg
+#undef _crt_va_arg
+#define _crt_va_arg(ap, type) __builtin_va_arg(ap, type)
+#endif
+
+/* VS 2015 switched to double underscore names, which is an improvement, but now
+ * we have to intercept those names too.
+ */
+#ifdef __crt_va_start
+#undef __crt_va_start
+#define __crt_va_start(ap, param) __builtin_va_start(ap, param)
+#endif
+#ifdef __crt_va_end
+#undef __crt_va_end
+#define __crt_va_end(ap) __builtin_va_end(ap)
+#endif
+#ifdef __crt_va_arg
+#undef __crt_va_arg
+#define __crt_va_arg(ap, type) __builtin_va_arg(ap, type)
+#endif
+
+#endif
+#endif