Commit Graph

5 Commits

Author SHA1 Message Date
Fariborz Jahanian 95236b50ce Diagnose about extern "C" functions returning c++ objects
on first declaration only. // rdar://13364028

llvm-svn: 177127
2013-03-14 23:09:00 +00:00
Rafael Espindola f4187658fa Add a getLanguageLinkage method to VarDecls and FunctionDecls. Use it to fix
some cases where functions with no language linkage were being treated as having
C language linkage. In particular, don't warn in

extern "C" {
  static NonPod foo();
}

Since getLanguageLinkage checks the language linkage, the linkage computation
cannot use the language linkage. Break the loop by checking just the context
in the linkage computation.

llvm-svn: 175117
2013-02-14 01:18:37 +00:00
Rafael Espindola a5c892058c Use hasCLanguageLinkage when warning about non C return types.
llvm-svn: 171263
2012-12-30 20:40:41 +00:00
Hans Wennborg 84ce606b91 Tweak warning text for returning incomplete type from extern "C" functions.
A warning was added in r150128 for returning non-C compatible
user-defined types from functions with C linkage.

This makes the text more clear for the case when the type isn't
decidedly non-C compatible, but incomplete.

llvm-svn: 160681
2012-07-24 17:59:41 +00:00
Aaron Ballman c2a9493a26 Adding support for warning when a non-C compatible user-defined type is returned from an extern "C" function.
Fixes bug 6143

llvm-svn: 150128
2012-02-09 01:21:34 +00:00