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-rw-r--r--Src/subst.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/Src/subst.c b/Src/subst.c
index 7906f80bd..6c3487e9a 100644
--- a/Src/subst.c
+++ b/Src/subst.c
@@ -66,6 +66,7 @@ prefork(LinkList list, int flags)
 	    else
 		setdata(node, (void *) getoutputfile(str));	/* =(...) */
 	    if (!getdata(node)) {
+		setdata(node, dupstring(""));
 		unqueue_signals();
 		return;
 	    }