Commit Graph

6 Commits

Author SHA1 Message Date
Richard Smith ac974a3c76 Reinstate r185229, reverted in r185256, with a tweak: further ignore the
standard's rule that an extern "C" declaration conflicts with any entity in the
global scope with the same name. Now we only care if the global scope entity is
a variable declaration (and so might have the same mangled name as the extern
"C" declaration). This has been reported as a standard defect.

Original commit message:

PR7927, PR16247: Reimplement handling of matching extern "C" declarations
across scopes.

When we declare an extern "C" name that is not a redeclaration of an entity in
the same scope, check whether it redeclares some extern "C" entity from another
scope, and if not, check whether it conflicts with a (non-extern-"C") entity in
the translation unit.

When we declare a name in the translation unit that is not a redeclaration,
check whether it conflicts with any extern "C" entities (possibly from other
scopes).

llvm-svn: 185281
2013-06-30 09:48:50 +00:00
Timur Iskhodzhanov 32d1e73023 Revert r185229 as it breaks compilation of <windows.h>
llvm-svn: 185256
2013-06-29 08:38:42 +00:00
Richard Smith 902befa277 PR7927, PR16247: Reimplement handling of matching extern "C" declarations
across scopes.

When we declare an extern "C" name that is not a redeclaration of an entity in
the same scope, check whether it redeclares some extern "C" entity from another
scope, and if not, check whether it conflicts with a (non-extern-"C") entity in
the translation unit.

When we declare a name in the translation unit that is not a redeclaration,
check whether it conflicts with any extern "C" entities (possibly from other
scopes).

llvm-svn: 185229
2013-06-28 22:03:51 +00:00
Richard Smith 39b7968ccb DR14, DR101, and part of DR1: fix handling of extern "C" declarations in
namespaces, by treating them just like we treat extern "C" declarations in
function scope.

llvm-svn: 184223
2013-06-18 20:15:12 +00:00
Rafael Espindola 1736f74669 Add an interesting testcase we already handle correctly.
llvm-svn: 176890
2013-03-12 19:50:10 +00:00
Rafael Espindola f67ef79820 Move the extern "C" sema tests to a new file.
llvm-svn: 176888
2013-03-12 19:45:57 +00:00