diff options
| author | Eric Fiselier <eric@efcs.ca> | 2017-09-14 22:19:10 +0000 |
|---|---|---|
| committer | Eric Fiselier <eric@efcs.ca> | 2017-09-14 22:19:10 +0000 |
| commit | 9bca0c9c9ea6ec603a1b1746c8595381db5bf883 (patch) | |
| tree | 9da08fc09eb0a5c56bfaaba87826c24677cda9ff /compiler-rt/include | |
| parent | ab9851db823666f3ba7e06cdec02e8e3b1b503fc (diff) | |
[ASAN] Add macro denoting availability of new `__asan_handle_no_return()` function.
Summary:
Libc++abi attempts to use the newly added `__asan_handle_no_return()` when built under ASAN. Unfortunately older versions of compiler-rt do not provide this symbol, and so libc++abi needs a way to detect if `asan_interface.h` actually provides the function.
This patch adds the macro `SANITIZER_ASAN_INTERFACE_HAS_HANDLE_NO_RETURN` which can be used to detect the availability of the new function.
Reviewers: phosek, kcc, vitalybuka, alekseyshl
Reviewed By: phosek
Subscribers: mclow.lists, cfe-commits
Differential Revision: https://reviews.llvm.org/D37871
Diffstat (limited to 'compiler-rt/include')
| -rw-r--r-- | compiler-rt/include/sanitizer/asan_interface.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler-rt/include/sanitizer/asan_interface.h b/compiler-rt/include/sanitizer/asan_interface.h index e689a730e2c..8828392b649 100644 --- a/compiler-rt/include/sanitizer/asan_interface.h +++ b/compiler-rt/include/sanitizer/asan_interface.h @@ -148,6 +148,10 @@ extern "C" { // before things like _exit and execl to avoid false positives on stack. void __asan_handle_no_return(void); + // Required to allow ASAN versions of libc++abi to build against older + // versions of compiler-rt that do not provide this interface. +# define SANITIZER_ASAN_INTERFACE_HAS_HANDLE_NO_RETURN + #ifdef __cplusplus } // extern "C" #endif |