range check char length

1 files changed, 9 insertions, 0 deletions

diff --git a/twasm/asm/tests.asm b/twasm/asm/tests.asm
index df60eb4..c4cd545 100644
--- a/twasm/asm/tests.asm
+++ b/twasm/asm/tests.asm
@@ -377,6 +377,13 @@ test_evaluate_constant:
   cmp rdx, 0x03
   jne .fail
 
+  ; oversized char
+  mov rdi, .case1c
+  mov rsi, 7
+  call evaluate_constant
+  cmp rdx, 0xFF
+  jne .fail
+
   .pass:
     mov rsi, msg_pass
     call print
@@ -396,6 +403,8 @@ test_evaluate_constant:
   .case3h_solution dq 0x243F6A8885A308D3
   .case0c db '"char"'
   .case0c_solution dq "char"
+  .case1c db '"chars"'
+  .case1c_solution dq "chars"
 
   .case0q db "0q31103755242102"
   .case0q_solution dq 0q31103755242102