================
@@ -0,0 +1,27 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wnontrivial-memcall %s
+
+extern "C" void *memcpy(void *s1, const void *s2, unsigned n);
+
+class TriviallyCopyable {};
+class NonTriviallyCopyable { NonTriviallyCopyable(const
NonTriviallyCopyable&);};
+struct Incomplete;
+
+void test_memcpy(TriviallyCopyable* tc0, TriviallyCopyable* tc1,
+ NonTriviallyCopyable *ntc0, NonTriviallyCopyable *ntc1,
+ Incomplete *i0, Incomplete *i1) {
+ // OK
+ memcpy(tc0, tc1, sizeof(*tc0));
+
+ // OK
+ memcpy(i0, i1, 10);
+
+ // expected-warning@+2{{first argument in call to 'memcpy' is a pointer to
non-trivially copyable type 'NonTriviallyCopyable'}}
+ // expected-note@+1{{explicitly cast the pointer to silence this warning}}
+ memcpy(ntc0, ntc1, sizeof(*ntc0));
+
+ // ~ OK
+ memcpy((void*)ntc0, ntc1, sizeof(*ntc0));
+
+ // OK
+ memcpy((void*)ntc0, (void*)ntc1, sizeof(*ntc0));
+}
----------------
zmodem wrote:
Can't we just update clang/test/SemaCXX/warn-memaccess.cpp instead?
https://github.com/llvm/llvm-project/pull/117387
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
