diff options
Diffstat (limited to 'clang/test/SemaCXX/function-extern-c.cpp')
| -rw-r--r-- | clang/test/SemaCXX/function-extern-c.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/function-extern-c.cpp b/clang/test/SemaCXX/function-extern-c.cpp index 16dbbb26fc6..2a073c79fc4 100644 --- a/clang/test/SemaCXX/function-extern-c.cpp +++ b/clang/test/SemaCXX/function-extern-c.cpp @@ -38,3 +38,16 @@ extern "C" long long f11( void ); extern "C" A *f10( void ); extern "C" struct mypodstruct f12(); // expected-warning {{'f12' has C-linkage specified, but returns incomplete type 'struct mypodstruct' which could be incompatible with C}} + +namespace test2 { + // FIXME: we should probably suppress the first warning as the second one + // is more precise. + // For now this tests that a second 'extern "C"' is not necessary to trigger + // the warning. + struct A; + extern "C" A f(void); // expected-warning {{'f' has C-linkage specified, but returns incomplete type 'test2::A' which could be incompatible with C}} + struct A { + A(const A&); + }; + A f(void); // expected-warning {{'f' has C-linkage specified, but returns user-defined type 'test2::A' which is incompatible with C}} +} |
