at it.

llvm-svn: 86243

  * If the unsigned type is smaller than the signed type, never warn, because
    its value will not change when zero-extended to the larger type.
  * If we're testing for (in)equality, and the unsigned value is an integer
    constant whose sign bit is not set, never warn, because even though the
    signed value might change, it can't affect the result of the equality.

Also make the comparison test cases much more rigorous, and have them expose
the subtle differences between C and C++ here.

llvm-svn: 86242

llvm-svn: 86240

  get_origin->x

where get_origin is actually a function and the user has forgotten the
parentheses. Instead of giving a lame note for the fix-it, give a
full-fledge error, early, then build the call expression to try to
recover. 

llvm-svn: 86238

llvm-svn: 86234

If a member variable of reference type is bound to a temporary in its member initializer it needs to be destroyed at the end of the constructor.

llvm-svn: 86230

llvm-svn: 86225

llvm-svn: 86224

llvm-svn: 86222

llvm-svn: 86218

class that is overridden in a base that isn't morally virtual.

llvm-svn: 86217

value into their own respective subclasses of Checker (and put them in .cpp files where their
implementation details are hidden from GRExprEngine).

llvm-svn: 86215

class type, don't perform the array-to-pointer or function-to-pointer
conversions, because we may end up binding a reference to a function
or array.

With this change, FileCheck now passes -fsyntax-only!

llvm-svn: 86211

implicit conversion sequence, check the validity of this conversion
and then perform it.

llvm-svn: 86210

llvm-svn: 86209

Minor cleanup: use BuiltinBug (which will soon be renamed) for DeferenceChecker and friends so that they always report the same bug type.

llvm-svn: 86208

It has to do with vararg constructors used as conversion
functions. Code gen needs work. This is WIP.

llvm-svn: 86207

Make sure that EnumConstantDecls always get a type, even when they have type-dependent initializers.

llvm-svn: 86197

llvm-svn: 86195

llvm-svn: 86183

llvm-svn: 86177

Make ASTContext::getIntWidth return 1 for all boolean type variations, not just for the unqualified, unaliased bool.

llvm-svn: 86174

The signed/unsigned checker should not warn for value-dependent expressions, and should especially not try to evaluate them.

llvm-svn: 86173

Be a little more careful when trying to extract a TypeDecl from a enum/class/struct/union specifier; in invalid code, we may also see ClassTemplateDecls.

llvm-svn: 86171

llvm-svn: 86167

llvm-svn: 86165

llvm-svn: 86156

initialization before main. Fixes pr5396.

llvm-svn: 86145

always zero in this context" warning logic. Also, make the diagnostic
itself more precise when referring to pointer values ("NULL" vs. "zero").

llvm-svn: 86143

llvm-svn: 86142

When collecting types for built-in candidates, make arrays decay to pointers. Otherwise, subscripting an array leads to no candidates at all. Fixes PR5360.

llvm-svn: 86140

This fixes PR5048. Also fix a bug where zero-sized arrays weren't warned about when the size was unsigned.

llvm-svn: 86136

llvm-svn: 86135

(without complaining if it fails) to get proper semantics: reference
binding with a derived-to-base conversion and the enumeration of
constructors for user-defined conversions. There are probably more
cases to fix, but my prior attempt at statically ensuring that
complete-type checking always happens failed. Perhaps I'll try again.

With this change, Clang can parse include/llvm/*.h!

llvm-svn: 86129

DiagnoseSignCompare into Sema::CheckSignCompare and call it from more places.

Add some enumerator tests.  These seem to expose some oddities in the
types we're converting C++ enumerators to;  in particular, they're converting
to unsigned before int, which seems to contradict 4.5 [conv.prom] p2.

Note to self: stop baiting Doug in my commit messages.

llvm-svn: 86128

llvm-svn: 86127

in covariant thunks that return references.

llvm-svn: 86121

pointers are returned.

llvm-svn: 86120

llvm-svn: 86116

invariants (diagnostics with source informations must occur between
{Begin,End}SourceFile).

llvm-svn: 86113