"expr --bignum 1" now fails when expr is built without libgmp

* src/expr.c (main): When --bignum is requested, yet expr was built
without libgmp, exit nonzero (3) in addition to giving a diagnostic.

diff --git a/src/expr.c b/src/expr.c
index 524ec93..dc41616 100644 (file)
--- a/src/expr.c
+++ b/src/expr.c
@@ -292,7 +292,8 @@ main (int argc, char **argv)
 #if HAVE_GMP
            mode = MP_ALWAYS;
 #else
-           error (0, 0, _("arbitrary-precision support is not available"));
+           error (EXPR_FAILURE, 0,
+                  _("arbitrary-precision support is not available"));
 #endif
            break;