[PATCH] Add `-verify-ignore-unexpected` option to ignore unexpected diagnostics in VerifyDiagnosticsConsumer

[Eric Fiselier]

Hi bogner, grosser, alexfh,

The goal of this patch is to make `-verify` easier to use when testing libc++. The `notes` attached to compile error diagnostics are numerous and relatively unstable when they reference libc++ header internals. This patch allows libc++ to write stable compilation failure tests by allowing unexpected diagnostic messages to be ignored where they are not relevant.

This patch adds a new CC1 flag called `-verify-ignore-unexpected`. `-verify-ignore-unexpected` tells `VerifyDiagnosticsConsumer` to ignore *all* unexpected diagnostic messages. `-verify-ignore-unexpected=<LevelList>` can be used to only ignore certain diagnostic levels. `<LevelList>` is a comma separated list of diagnostic levels to ignore. The supported levels are `note`, `remark`, `warning` and `error`.

http://reviews.llvm.org/D10138

Files:
  include/clang/Basic/DiagnosticOptions.def
  include/clang/Basic/DiagnosticOptions.h
  include/clang/Driver/CC1Options.td
  lib/Frontend/CompilerInvocation.cpp
  lib/Frontend/VerifyDiagnosticConsumer.cpp
  test/Frontend/verify-ignore-unexpected.c

EMAIL PREFERENCES
  http://reviews.llvm.org/settings/panel/emailpreferences/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D10138.26818.patch
Type: text/x-patch
Size: 11569 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20150529/4bd7a482/attachment.bin>