Improve handling of base initializers. We now parse initializers in out of line decls, such as:

class C {
    C() { }
    
    int a;
};

C::C() : a(10) { }

We also diagnose when initializers are used on declarations that aren't constructors:

t.cpp:1:10: error: only constructors take base initializers
void f() : a(10) { }
         ^

Doug and/or Sebastian: I'd appreciate a review, especially the nested-name-spec test results (from the looks of it we now match gcc in that test.)

llvm-svn: 67672

1 files changed, 3 insertions, 1 deletions

diff --git a/clang/lib/Parse/Parser.cpp b/clang/lib/Parse/Parser.cpp
index a26c310c204..135faf4e9c9 100644
--- a/clang/lib/Parse/Parser.cpp
+++ b/clang/lib/Parse/Parser.cpp
@@ -505,7 +505,9 @@ Parser::ParseDeclarationOrFunctionDefinition(
   } else if (DeclaratorInfo.isFunctionDeclarator() &&
              (Tok.is(tok::l_brace) ||             // int X() {}
               (!getLang().CPlusPlus &&
-               isDeclarationSpecifier()))) {    // int X(f) int f; {}
+               isDeclarationSpecifier()) ||   // int X(f) int f; {}
+              (getLang().CPlusPlus &&
+               Tok.is(tok::colon)))) { // X() : Base() {} (used for ctors)
     if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
       Diag(Tok, diag::err_function_declared_typedef);