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-rw-r--r--coreutils/expr.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/coreutils/expr.c b/coreutils/expr.c
index 191473446..51e553dc6 100644
--- a/coreutils/expr.c
+++ b/coreutils/expr.c
@@ -136,7 +136,7 @@ static int null(VALUE * v)
if (v->type == integer)
return v->u.i == 0;
else /* string: */
- return v->u.s[0] == '\0' || strcmp(v->u.s, "0") == 0;
+ return v->u.s[0] == '\0' || LONE_CHAR(v->u.s, '0');
}
/* Coerce V to a string value (can't fail). */