From f8d08b1e1a13bdbdd96e667ab5c5650b03c97a6f Mon Sep 17 00:00:00 2001
From: acqn <acqn163@outlook.com>
Date: Tue, 26 Jul 2022 21:40:19 +0800
Subject: [PATCH] More post-C99 predefined macros.

---
 src/cc65/compile.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/cc65/compile.c b/src/cc65/compile.c
index 4b3584147..78d0817e3 100644
--- a/src/cc65/compile.c
+++ b/src/cc65/compile.c
@@ -407,6 +407,14 @@ void Compile (const char* FileName)
     /* DefineNumericMacro ("__STDC__", 1);      <- not now */
     DefineNumericMacro ("__STDC_HOSTED__", 1);
 
+    /* Stuff unsupported */
+    if (IS_Get (&Standard) > STD_C99) {
+        DefineNumericMacro ("__STDC_NO_ATOMICS__", 1);
+        DefineNumericMacro ("__STDC_NO_COMPLEX__", 1);
+        DefineNumericMacro ("__STDC_NO_THREADS__", 1);
+        DefineNumericMacro ("__STDC_NO_VLA__", 1);
+    }
+
     /* Create the base lexical level */
     EnterGlobalLevel ();