Fix import error when using wasm-c-api with WASI threads

[eloparco]

Similar to what already in place for pthreads:

wasm-micro-runtime/core/iwasm/libraries/lib-pthread/lib_pthread_wrapper.c

Lines 597 to 635 in 47fcb85

	/* workaround about passing instantiate-linking information */
	{
	CApiFuncImport *c_api_func_imports;
	uint32 import_func_count = 0;
	uint32 size_in_bytes = 0;
	#if WASM_ENABLE_INTERP != 0
	if (module_inst->module_type == Wasm_Module_Bytecode) {
	new_c_api_func_imports = &(
	((WASMModuleInstance *)new_module_inst)->e->c_api_func_imports);
	c_api_func_imports =
	((WASMModuleInstance *)module_inst)->e->c_api_func_imports;
	import_func_count = ((WASMModule *)module)->import_function_count;
	}
	#endif
	#if WASM_ENABLE_AOT != 0
	if (module_inst->module_type == Wasm_Module_AoT) {
	AOTModuleInstanceExtra *e =
	(AOTModuleInstanceExtra *)((AOTModuleInstance *)new_module_inst)
	->e;
	new_c_api_func_imports = &(e->c_api_func_imports);
	e = (AOTModuleInstanceExtra *)((AOTModuleInstance *)module_inst)->e;
	c_api_func_imports = e->c_api_func_imports;
	import_func_count = ((AOTModule *)module)->import_func_count;
	}
	#endif
	if (import_func_count != 0 && c_api_func_imports) {
	size_in_bytes = sizeof(CApiFuncImport *) * import_func_count;
	*new_c_api_func_imports = wasm_runtime_malloc(size_in_bytes);
	if (!(*new_c_api_func_imports))
	goto fail;
	bh_memcpy_s(*new_c_api_func_imports, size_in_bytes,
	c_api_func_imports, size_in_bytes);
	}
	}

#2149

TODO:

• refactor common code
• check missing free for new_c_api_func_imports in lib_pthread_wrapper.c

[cpetig]

This star is wrong, it needs the size of the struct, not the size of one pointer. Corrected in main...cpetig:wasm-micro-runtime:main

Also there is more issues with threads which I will describe in a separate issue.

[cpetig]

(Note: I was the one introducing this error first)

[cpetig]

Also this error is still present in the code I copied the fix from: https://github.com/bytecodealliance/wasm-micro-runtime/blob/main/core/iwasm/libraries/lib-pthread/lib_pthread_wrapper.c#L627

[cpetig]

If I understand correctly this is already implied by the next two lines - as deinstantiate frees c_api_func_imports in line 2265.

[eloparco]

Closing since the same changes are being applied in #2173