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7 Commits

Author SHA1 Message Date
David Majnemer 4101621dd7 Sema: Cleanup and simplify anonymous union diagnostics 
The determination of which diagnostics would be issued for certain
anonymous unions started to get a little ridiculous.  Clean this up by
inverting the condition-tree's logic from dialect -> issue to
issue -> diagnostic.

As part of this cleanup, move ext_c99_flexible_array_member from
DiagnosticParseKinds.td to DiagnosticSemaKinds.td because it's driven by
Sema, not Parse.

Also, the liberty was taken to edit ext_c99_flexible_array_member to
match other, similar, diagnostics.

llvm-svn: 193919
 2013-11-02 10:38:05 +00:00
David Majnemer 77c2754d58 Sema: Flexible array members were introduced in C99, diagnose their use in C++ 
The declaration of a flexible array member was correctly diagnosed as an
extension in C89 mode but not in C++.

llvm-svn: 193918
 2013-11-02 09:22:44 +00:00
Richard Smith e434590bd9 Change the diagnostics which said 'accepted as an extension' to instead say 
'is an extension'. The former is inappropriate and confusing when building with
-Werror/-pedantic-errors.

llvm-svn: 147357
 2011-12-29 21:57:33 +00:00
Douglas Gregor c124e59c90 Emit an extension diagnostic for C99 designated initializers that appear in C++ code 
llvm-svn: 123582
 2011-01-16 16:13:16 +00:00
Douglas Gregor 959d5a0cbd Implement support for variable length arrays in C++. VLAs are limited 
in several important ways:

  - VLAs of non-POD types are not permitted.
  - VLAs cannot be used in conjunction with C++ templates.

These restrictions are intended to keep VLAs out of the parts of the
C++ type system where they cause the most trouble. Fixes PR5678 and
<rdar://problem/8013618>.

llvm-svn: 104443
 2010-05-22 16:17:30 +00:00
Daniel Dunbar 8fbe78f6fc Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. 
- This is designed to make it obvious that %clang_cc1 is a "test variable"
   which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it
   can be useful to redefine what gets run as 'clang -cc1' (for example, to set
   a default target).

llvm-svn: 91446
 2009-12-15 20:14:24 +00:00
Douglas Gregor 73341c4e63 Diagnose VLAs as an error in C++. 
Also, treat the GNU __null as an integral constant expression to match
GCC's behavior.

llvm-svn: 81490
 2009-09-11 00:18:58 +00:00