Fix an export name check exception

bytecodealliance · Nov 21, 2023 · 96e3b79 · 96e3b79
1 parent 9ad4229
commit 96e3b79
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/core/iwasm/interpreter/wasm_loader.c b/core/iwasm/interpreter/wasm_loader.c
@@ -2055,7 +2055,9 @@ load_export_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
 
             for (j = 0; j < i; j++) {
                 name = module->exports[j].name;
-                if (strlen(name) == str_len && memcmp(name, p, str_len) == 0) {
+                /* If str_len is zero, the return value of memcmp is zero */
+                if (str_len && strlen(name) == str_len
+                    && memcmp(name, p, str_len) == 0) {
                     set_error_buf(error_buf, error_buf_size,
                                   "duplicate export name");
                     return false;