[ubsan] Implement the -fcatch-undefined-behavior flag using a trapping
implementation; this is much more inline with the original implementation
(i.e., pre-ubsan) and does not require run-time library support.
The trapping implementation can be invoked using either '-fcatch-undefined-behavior'
or '-fsanitize=undefined-trap -fsanitize-undefined-trap-on-error', with the latter
being preferred. Eventually, the -fcatch-undefined-behavior' flag will be removed.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173848 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index b200637..245de34 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -392,6 +392,8 @@
Args.hasArg(OPT_fsanitize_memory_track_origins);
Opts.SanitizeAddressZeroBaseShadow =
Args.hasArg(OPT_fsanitize_address_zero_base_shadow);
+ Opts.SanitizeUndefinedTrapOnError =
+ Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
Opts.SSPBufferSize =
Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags);
Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);