p_compiler: add replacement va_copy

This might technically not always be correct, because va_copy might
be a function, or a system might not have va_copy, and not work with
assignment.

Hopefully this is never the case.
Without configure tests, it doesn't seem possible to do better.

diff --git a/src/gallium/include/pipe/p_compiler.h b/src/gallium/include/pipe/p_compiler.h
index 1fa3ec8300ab7d688397b0ee748d52652c0d55fe..0a5be43f6bf0e6472d76aa50f49de6b6914359bd 100644 (file)
--- a/src/gallium/include/pipe/p_compiler.h
+++ b/src/gallium/include/pipe/p_compiler.h
@@ -79,6 +79,14 @@ typedef unsigned char boolean;
 #define FALSE false
 #endif
 
+#ifndef va_copy
+#ifdef __va_copy
+#define va_copy(dest, src) __va_copy((dest), (src))
+#else
+#define va_copy(dest, src) (dest) = (src)
+#endif
+#endif
+
 /* Function inlining */
 #ifndef INLINE
 #  ifdef __cplusplus