[PATCH] Last-chance diagnostics for incomplete types

[Luke Zarko]

zarko added you to the CC list for the revision "Last-chance diagnostics for incomplete types".

Hi jdennett,

This patch adds a method to ExternalSemaSource to allow it to produce diagnostics when an incomplete type was detected where a complete type was required. For example, one could define an ExternalSemaSource that scans a repository for headers providing a missing definition.

The purpose of the MaybeDiagnoseMissingCompleteType method differs from that of the existing  ExternalASTSource::CompleteType method. The former is invoked to diagnose a single SourceLocation-ed missing-complete-type site where there is no chance for recovery. The latter may be called in the course of compiling a valid source file with some of its definitions available in external but otherwise available locations.


http://llvm-reviews.chandlerc.com/D1213

Files:
  include/clang/Sema/ExternalSemaSource.h
  include/clang/Sema/MultiplexExternalSemaSource.h
  lib/Sema/MultiplexExternalSemaSource.cpp
  lib/Sema/SemaType.cpp
  unittests/CMakeLists.txt
  unittests/Makefile
  unittests/Sema/CMakeLists.txt
  unittests/Sema/ExternalSemaSourceTest.cpp
  unittests/Sema/Makefile
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