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-rw-r--r--Src/builtin.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/Src/builtin.c b/Src/builtin.c
index 26335a2e8..691734221 100644
--- a/Src/builtin.c
+++ b/Src/builtin.c
@@ -2491,6 +2491,7 @@ typeset_single(char *cname, char *pname, Param pm, UNUSED(int func),
 		return NULL;
 	    }
 	}
+	pm->node.flags |= PM_DECLAREDNULL;
     } else {
 	if (idigit(*pname))
 	    zerrnam(cname, "not an identifier: %s", pname);