From 9cd2e9ec8fc0127393dfce9c0359d500c8c238be Mon Sep 17 00:00:00 2001
From: Edward Rudd <urkle@outoforder.cc>
Date: Tue, 09 Apr 2019 02:22:50 +0000
Subject: [PATCH] updae source to 2.0.9 source

---
 source/src/atomic/SDL_atomic.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/source/src/atomic/SDL_atomic.c b/source/src/atomic/SDL_atomic.c
index df49201..d0022cd 100644
--- a/source/src/atomic/SDL_atomic.c
+++ b/source/src/atomic/SDL_atomic.c
@@ -53,10 +53,11 @@
 #endif
 
 #if defined(__WATCOMC__) && defined(__386__)
+SDL_COMPILE_TIME_ASSERT(intsize, 4==sizeof(int));
 #define HAVE_WATCOM_ATOMICS
 extern _inline int _SDL_xchg_watcom(volatile int *a, int v);
 #pragma aux _SDL_xchg_watcom = \
-  "xchg [ecx], eax" \
+  "lock xchg [ecx], eax" \
   parm [ecx] [eax] \
   value [eax] \
   modify exact [eax];

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