llvm-svn: 39287

Diagnose redefintion of tag types, e.g.:

t.c:7:8: error: redefinition of 'blah'
struct blah {};
       ^
t.c:1:8: error: previous definition is here
struct blah {
       ^
2 diagnostics generated.

llvm-svn: 39286

llvm-svn: 39285

converting a declspec with TST = struct/union.  Pretty print as well.

llvm-svn: 39284

llvm-svn: 39283

Use it to hold the declaration object for a struct/union.

llvm-svn: 39282

llvm-svn: 39281

llvm-svn: 39280

llvm-svn: 39279

llvm-svn: 39278

rename it to ParseTag.

llvm-svn: 39277

llvm-svn: 39276

struct blah * P;
union blah *P2;

we now emit:

t.c:2:1: error: redefinition of 'blah' with tag that does not match previous use
union blah *P2;
^
t.c:1:8: error: previous use is here
struct blah * P;
       ^

llvm-svn: 39275

or a definition/declaration of a tag.  This is required to handle
C99 6.7.2.3p11 properly.

llvm-svn: 39274

queries more natural.

llvm-svn: 39273

case and handle identifiers in the same namespace correctly.  This implements
test/Parser/c-namespace.c

llvm-svn: 39272

llvm-svn: 39271

llvm-svn: 39270

llvm-svn: 39269

llvm-svn: 39268

 - Add support for getting the namespace of a decl.
 - Move type down the inheritance hierarchy, it doesn't make sense for a struct
   to have a type, and typedef's use types in different ways than variables do.
 - Add initial TagDecl/RecordDecl classes.

llvm-svn: 39267

Make name lookup properly obey C namespaces, simplify decl construction byeliminating the 'next' pointer from the ctor, and add initial support forparsing struct/union tags.

llvm-svn: 39266

eliminating the 'next' pointer from the ctor, and add initial support for
parsing struct/union tags.

llvm-svn: 39265

llvm-svn: 39264

llvm-svn: 39263

llvm-svn: 39262

void (*signal(int arga, void (*argb)(double Y)))(void* Z) {}

as:

void (*signal(int arga, void (*argb)(double)))(void *) {
}

go C :)

llvm-svn: 39261

llvm-svn: 39260

llvm-svn: 39259

llvm-svn: 39258

Detect and emit errors when names are redefined in the same scope, e.g.
test/Parser/argument_redef.c, which now emits:

argument_redef.c:4:22: error: redefinition of 'A'
int foo(int A) { int A; }
                     ^
argument_redef.c:4:13: error: previous definition is here
int foo(int A) { int A; }
            ^

llvm-svn: 39257

llvm-svn: 39256

llvm-svn: 39255

llvm-svn: 39254

inserting them into the function body scope and registering them with the
corresponding FunctionDecl.

llvm-svn: 39253

an extra scope stack to be pushed between the function body and arguments, which
causes the parser to incorrectly accept stuff like 'int foo(int A) { int A; }',
which is test/Parser/argument_redef.c.

llvm-svn: 39252

llvm-svn: 39251

llvm-svn: 39250

This fixes a bug where a missing } could cause the scope stacks to get
unbalanced and will be used for function body parsing.

llvm-svn: 39249

llvm-svn: 39248