[PATCH] Implement diagnostic mode for -fsanitize=cfi*, -fsanitize=cfi-diag.

[Peter Collingbourne]

Hi rsmith,

This causes programs compiled with this flag to print a diagnostic when
a control flow integrity check fails instead of aborting. Diagnostics are
printed using UBSan's runtime library.

The main motivation of this feature over -fsanitize=vptr is fidelity with
the -fsanitize=cfi implementation: the diagnostics are printed under exactly
the same conditions as those which would cause -fsanitize=cfi to abort the
program. This means that the same restrictions apply regarding compiling
all translation units with -fsanitize=cfi, cross-DSO virtual calls are
forbidden, etc.

http://reviews.llvm.org/D10268

Files:
  include/clang/Basic/DiagnosticDriverKinds.td
  include/clang/Basic/Sanitizers.def
  lib/CodeGen/CGCXXABI.h
  lib/CodeGen/CGClass.cpp
  lib/CodeGen/CGExpr.cpp
  lib/CodeGen/CGExprCXX.cpp
  lib/CodeGen/CGExprScalar.cpp
  lib/CodeGen/CodeGenFunction.h
  lib/CodeGen/ItaniumCXXABI.cpp
  lib/CodeGen/MicrosoftCXXABI.cpp
  lib/Driver/SanitizerArgs.cpp
  test/CodeGenCXX/cfi-vcall.cpp
  test/Driver/rtti-options.cpp

EMAIL PREFERENCES
  http://reviews.llvm.org/settings/panel/emailpreferences/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D10268.27171.patch
Type: text/x-patch
Size: 21939 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20150605/fff38389/attachment.bin>