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ref: adeca5a4f37c9dde9cd0fcd5f5bbc026c23db82f
parent: a5becc37677b6c86a026ce0ef9819e821d2d046a
author: Roberto E. Vargas Caballero <[email protected]>
date: Fri Aug 14 03:32:47 EDT 2015

Fix regression of commit e6e455c

The test for the string was not to avoid crashes, was to avoid
print something in the case of OCOLON, which is only a way to get
three children in a binary tree.

--- a/cc1/code.c
+++ b/cc1/code.c
@@ -307,7 +307,8 @@
 
 	emitnode(np->left);
 	emitnode(np->right);
-	printf("\t%s", optxt[op]);
+	if ((s = optxt[op]) != NULL)        /* do not print in OCOLON case */
+		printf("\t%s", optxt[op]);
 	emitletter(np->type);
 }