evaluate: prevent assert when evaluating very large shift values

Error out instead of 'nft: gmputil.c:67: mpz_get_uint32: Assertion `cnt <= 1' failed.'.

Fixes: edecd58755a8 ("evaluate: support shifts larger than the width of the left operand")
Signed-off-by: Florian Westphal <fw@strlen.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/tests/shell/testcases/bogons/nft-f/huge_shift_assert b/tests/shell/testcases/bogons/nft-f/huge_shift_assert
new file mode 100644
index 00000000..7599f850
--- /dev/null
+++ b/tests/shell/testcases/bogons/nft-f/huge_shift_assert
@@ -0,0 +1,5 @@
+table ip t {
+        chain c {
+		counter name meta mark >> 88888888888888888888
+        }
+}