From 0204c7d78833358195175f110b09b18e491f5b13 Mon Sep 17 00:00:00 2001
From: David Reid <mackron@gmail.com>
Date: Thu, 21 Aug 2025 12:56:20 +1000
Subject: [PATCH] Fix a compatibility error with va_copy().

---
 miniaudio.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/miniaudio.h b/miniaudio.h
index 0fb9918c..53dbe92d 100644
--- a/miniaudio.h
+++ b/miniaudio.h
@@ -13256,8 +13256,12 @@ Logging
 **************************************************************************************************************************************************************/
 #ifndef ma_va_copy
     #if !defined(_MSC_VER) || _MSC_VER >= 1800
-        #if (defined(__GNUC__) && __GNUC__ < 3)
-            #define ma_va_copy(dst, src) ((dst) = (src))    /* This is untested. Not sure if this is correct for old GCC. */
+        #if !defined(__STDC_VERSION__) || (defined(__GNUC__) && __GNUC__ < 3)   /* <-- va_copy() is not available when using `-std=c89`. The `!defined(__STDC_VERSION__)` parts is what checks for this. */
+            #if defined(__va_copy)
+                #define ma_va_copy(dst, src) __va_copy(dst, src)
+            #else
+                #define ma_va_copy(dst, src) ((dst) = (src))    /* This is untested. Not sure if this is correct for old GCC. */
+            #endif
         #else
             #define ma_va_copy(dst, src) va_copy((dst), (src))
         #endif