Index: tr_shader.c
===================================================================
--- tr_shader.c	(revision 1803)
+++ tr_shader.c	(working copy)
@@ -2866,6 +2866,14 @@
 	ri.Printf (PRINT_ALL, "------------------\n");
 }
 
+static char *stradd( char *dst, const char *src ) 
+{
+	char c;
+	while ( (c = *src++) != '\0' ) 
+		*dst++ = c;
+	*dst = '\0';
+	return dst;
+}
 
 /*
 ====================
@@ -2883,7 +2891,7 @@
 	char *p;
 	int numShaderFiles;
 	int i;
-	char *oldp, *token, *hashMem;
+	char *oldp, *token, *hashMem, *textEnd;
 	int shaderTextHashTableSizes[MAX_SHADERTEXT_HASH], hash, size;
 
 	long sum = 0, summand;
@@ -2944,20 +2952,20 @@
 	// build single large buffer
 	s_shaderText = ri.Hunk_Alloc( sum + numShaderFiles*2, h_low );
 	s_shaderText[ 0 ] = '\0';
-
+	textEnd = s_shaderText;
+ 
 	// free in reverse order, so the temp files are all dumped
 	for ( i = numShaderFiles - 1; i >= 0 ; i-- )
 	{
-		if(buffers[i])
-		{
-			p = &s_shaderText[strlen(s_shaderText)];
-			strcat( s_shaderText, buffers[i] );
-			ri.FS_FreeFile( buffers[i] );
-			COM_Compress(p);
-			strcat( s_shaderText, "\n" );
-		}
+		if ( !buffers[i] )
+			continue;
+		textEnd = stradd( textEnd, buffers[i] );
+		textEnd = stradd( textEnd, "\n" );
+		ri.FS_FreeFile( buffers[i] );
 	}
 
+	COM_Compress( s_shaderText );
+
 	// free up memory
 	ri.FS_FreeFileList( shaderFiles );