diff options
| author | Howard Hinnant <hhinnant@apple.com> | 2012-01-25 19:19:13 +0000 |
|---|---|---|
| committer | Howard Hinnant <hhinnant@apple.com> | 2012-01-25 19:19:13 +0000 |
| commit | db97064263965cd1a76358d8f55c4c2fe01ab4ba (patch) | |
| tree | 76d820f7263655c0bc26d34dc67b27eacf2b6046 /libcxxabi/src/cxa_exception_storage.cpp | |
| parent | 5d6b9d28f7c20697488d0decc326b771fe39b4da (diff) | |
| download | bcm5719-llvm-db97064263965cd1a76358d8f55c4c2fe01ab4ba.tar.gz bcm5719-llvm-db97064263965cd1a76358d8f55c4c2fe01ab4ba.zip | |
Add comment documenting extension behavior of __cxa_get_globals_fast().
llvm-svn: 148966
Diffstat (limited to 'libcxxabi/src/cxa_exception_storage.cpp')
| -rw-r--r-- | libcxxabi/src/cxa_exception_storage.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libcxxabi/src/cxa_exception_storage.cpp b/libcxxabi/src/cxa_exception_storage.cpp index 4e06c066b70..8688932b4e8 100644 --- a/libcxxabi/src/cxa_exception_storage.cpp +++ b/libcxxabi/src/cxa_exception_storage.cpp @@ -75,6 +75,10 @@ extern "C" { return retVal; } + // Note that this implementation will reliably return NULL if not + // preceeded by a call to __cxa_get_globals(). This is an extension + // to the Itanium ABI and is taken advantage of in several places in + // libc++abi. __cxa_eh_globals * __cxa_get_globals_fast () noexcept { // First time through, create the key. static int init = construct_(); |
