Lift builtin-include-path logic out of ASTUnit::LoadFromCommandLine and fix CIndex to pass in the right directory (previously it was using the path to the main executable, which generally is wrong).

llvm-svn: 91238

llvm-svn: 91237

llvm-svn: 91234

llvm-svn: 91229

(fixes radar 7466494).

llvm-svn: 91227

implicitly-generated AST nodes. We previously built instantiated nodes
for each of these AST nodes, then passed them on to Sema, which was
not prepared to see already-type-checked nodes (see PR5755). In some
places, we had ugly workarounds to try to avoid re-type-checking
(e.g., in VarDecl initializer instantiation).

Now, we skip implicitly-generated nodes when performing instantiation,
preferring instead to build just the AST nodes that directly reflect
what was written in the source code. This has several advantages:

  - We don't need to instantiate anything that doesn't have a direct
    correlation to the source code, so we can have better location
    information.
  - Semantic analysis sees the same thing at template instantiation
    time that it would see for a non-template.
  - At least one ugly hack (VarDecl initializers) goes away.

Fixes PR5755.

llvm-svn: 91218

llvm-svn: 91216

llvm-svn: 91215

in a potentially potentially evaluated context, queue those
diagnostics and only emit them if the context ends up being
potentially evaluated. This completes the fix for PR5761.

llvm-svn: 91213

__builtin_offsetof, passing through an ellipsis) when we're in an
unevaluated context. This is the first part of the fix to PR5761,
which deals with the simple case of an unevaluated context.

llvm-svn: 91210

no extra safety anyway.

llvm-svn: 91207

llvm-svn: 91205

llvm-svn: 91204

This implements a new flag -fcatch-undefined-behavior.  The flag turns
on additional runtime checks for:

  T a[I];

  a[i]    abort when i < 0 or i >= I.

Future stuff includes shifts by >= bitwidth amounts.

llvm-svn: 91198

llvm-svn: 91196

Make using '-fshort-enums' an error until it is actually implemented (changes the ABI, so it is dangerous to not error out if we don't support it).  Fixes <rdar://problem/7461006>.

llvm-svn: 91191

llvm-svn: 91190

llvm-svn: 91189

llvm-svn: 91187

llvm-svn: 91182

llvm-svn: 91180

llvm-svn: 91176

llvm-svn: 91174

(fixes radar 7465023).

llvm-svn: 91171

llvm-svn: 91163

valid standard conversion to match g++'s behaviour.

llvm-svn: 91157

llvm-svn: 91156

llvm-svn: 91155

llvm-svn: 91152

llvm-svn: 91149

in a file context.  In well-formed code, only happens with friend functions.
Fixes PR 5760.

llvm-svn: 91146

llvm-svn: 91141

informative chunk.

llvm-svn: 91139

llvm-svn: 91138

llvm-svn: 91137

correctly.

llvm-svn: 91136

specializations and class template partial specializations (they're
never named directly). Also, member access expressions only refer to
value declarations (fields, functions, enumerators, etc.) and
Objective-C property declarations; filter out everything else.

llvm-svn: 91133

llvm-svn: 91129

llvm-svn: 91127

llvm-svn: 91125