diff options
Diffstat (limited to 'wasm2c/examples/rot13/main.c')
| -rw-r--r-- | wasm2c/examples/rot13/main.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/wasm2c/examples/rot13/main.c b/wasm2c/examples/rot13/main.c index 2980324e..8081f697 100644 --- a/wasm2c/examples/rot13/main.c +++ b/wasm2c/examples/rot13/main.c @@ -45,6 +45,11 @@ void Z_hostZ_buf_done(struct Z_host_instance_t* instance, u32 ptr, u32 size) { } int main(int argc, char** argv) { + /* Make sure there is at least one command-line argument. */ + if (argc < 2) { + printf("Invalid argument. Expected '%s WORD'\n", argv[0]); + return 1; + } /* Initialize the Wasm runtime. */ wasm_rt_init(); |