X-Git-Url: https://git.ralfj.de/gltest.git/blobdiff_plain/d997a33e329838b9ef31dde671479c112941d58c..aa8d6f63cc3b8ce1d8c7473ab59bbc2b2f92010c:/glxbackend.cpp

diff --git a/glxbackend.cpp b/glxbackend.cpp
index ff126eb..7841bbe 100644
--- a/glxbackend.cpp
+++ b/glxbackend.cpp
@@ -2,6 +2,7 @@
 
 #include <stdio.h>
 #include <assert.h>
+#include <stdlib.h>
 #include <GL/glxext.h>
 #include <string>
 
@@ -80,6 +81,8 @@ void GLXBackend::setSwapInterval(int i) const
 		funSwapIntervalExt(display, window, i);
 	else if (funSwapIntervalMesa)
 		funSwapIntervalMesa(i);
-	else
-		assert(false && "At least one of glXSwapIntervalMESA, glXSwapIntervalEXT must be provided by the system");
+	else {
+		fprintf(stderr, "At least one of glXSwapIntervalMESA, glXSwapIntervalEXT must be provided by the system\n");
+		abort();
+	}
 }