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Prevent undefined behavior from c_api_func_imports == NULL (#1883)

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The module instance's c_api_func_imports may be NULL under some circumstances,
add checks before accessing it.
This commit is contained in:
Martin Klang
2023-01-14 00:52:39 +01:00
committed by GitHub
parent 21ba730de3
commit 622cdbefd6
4 changed files with 15 additions and 6 deletions
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10
core/iwasm/interpreter/wasm_runtime.c
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@ -2908,8 +2908,14 @@ llvm_jit_invoke_native(WASMExecEnv *exec_env, uint32 func_idx, uint32 argc,
import_func = &module->import_functions[func_idx].u.function;
if (import_func->call_conv_wasm_c_api) {
c_api_func_import = module_inst->e->c_api_func_imports + func_idx;
func_ptr = c_api_func_import->func_ptr_linked;
if (module_inst->e->c_api_func_imports) {
c_api_func_import = module_inst->e->c_api_func_imports + func_idx;
func_ptr = c_api_func_import->func_ptr_linked;
}
else {
c_api_func_import = NULL;
func_ptr = NULL;
}
}
if (!func_ptr) {