Error out for incomplete type initialisation

Rob Pilling committed 2 years ago

Commit fb164e01 parent be8f8943 files · +22 −1Browse files

Unified · Split

3 files

        toplevel array or the last member of the toplevel struct */
     if (size < 0) {
+        // error out except for top-level incomplete arrays
+        // (arrays of incomplete types are handled in array parsing)
+        if (!(type->t & VT_ARRAY))
+            tcc_error("initialization of incomplete type");
         /* If the base type itself was an array type of unspecified size
            (like in 'typedef int arr[]; arr x = {1};') then we will
            overwrite the unknown size by the real one for this decl.

@@ -463,4 +463,17 @@ int main() { · 462 unmodified lines
463	#error \123\\	463	#error \123\\
464	456	464	456
465		465
		466	#elif defined test_error_incomplete_type
		467	struct A;
		468	void f(struct A *);
		469
		470	int main()
		471	{
		472	f(&(struct A){});
		473	}
		474
		475	struct A {
		476	int x;
		477	};
		478
466	#endif	479	#endif

 [returns 1]
 [test_61_undefined_enum]
-60_errors_and_warnings.c:46: error: unknown type size
+60_errors_and_warnings.c:46: error: initialization of incomplete type
 [test_74_non_const_init]
 60_errors_and_warnings.c:49: error: initializer element is not constant
 [test_error_string]
 60_errors_and_warnings.c:464: error: #error \123\456
+[test_error_incomplete_type]
+60_errors_and_warnings.c:472: error: initialization of incomplete type

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