diff options
| author | Abseil Team <absl-team@google.com> | 2018-11-01T21·00-0700 |
|---|---|---|
| committer | Matt Calabrese <calabrese@x.team> | 2018-11-02T16·35-0400 |
| commit | f95179062eb65ce40895cc76f1398cce25394369 (patch) | |
| tree | 9506d0c91321ddc6c4d487d130676b444fe5b88f /absl/base/attributes.h | |
| parent | cc8dcd307b76a575d2e3e0958a4fe4c7193c2f68 (diff) | |
Export of internal Abseil changes.
-- 4e224c85c3730398919fc5195cb1fc7a752e6e4f by Mark Barolak <mbar@google.com>: Update some references to "StringPiece" to say "string_view" instead. PiperOrigin-RevId: 219693697 -- 6bdc925a3db5e97f1f8a404bdfda2e47e48f7b9a by Abseil Team <absl-team@google.com>: Disable weak symbols for the Windows backend of LLVM, since they are currently buggy. See https://bugs.llvm.org/show_bug.cgi?id=37598 for more information. PiperOrigin-RevId: 219676493 -- 5823f495036181191f435efa4c45d60ca3160145 by Derek Mauro <dmauro@google.com>: Don't use the SSE2 implementation of container_internal::Group with -funsigned-char under GCC. This is a workaround for https://github.com/abseil/abseil-cpp/issues/209. _mm_cmpgt_epi8 is broken under GCC with -funsigned-char. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87853 PiperOrigin-RevId: 219666066 GitOrigin-RevId: 4e224c85c3730398919fc5195cb1fc7a752e6e4f Change-Id: I2f115d0256576cf476ae73a9464c21d4106a2a56
Diffstat (limited to 'absl/base/attributes.h')
| -rw-r--r-- | absl/base/attributes.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/absl/base/attributes.h b/absl/base/attributes.h index e8500224443b..c44b8828509a 100644 --- a/absl/base/attributes.h +++ b/absl/base/attributes.h @@ -155,7 +155,12 @@ // ABSL_ATTRIBUTE_WEAK // // Tags a function as weak for the purposes of compilation and linking. -#if ABSL_HAVE_ATTRIBUTE(weak) || (defined(__GNUC__) && !defined(__clang__)) +// Weak attributes currently do not work properly in LLVM's Windows backend, +// so disable them there. See https://bugs.llvm.org/show_bug.cgi?id=37598 +// for futher information. +#if (ABSL_HAVE_ATTRIBUTE(weak) || \ + (defined(__GNUC__) && !defined(__clang__))) && \ + !(defined(__llvm__) && defined(_WIN32)) #undef ABSL_ATTRIBUTE_WEAK #define ABSL_ATTRIBUTE_WEAK __attribute__((weak)) #define ABSL_HAVE_ATTRIBUTE_WEAK 1 @@ -296,13 +301,13 @@ // ABSL_HAVE_ATTRIBUTE_SECTION // -// Indicates whether labeled sections are supported. Labeled sections are not -// supported on Darwin/iOS. +// Indicates whether labeled sections are supported. Weak symbol support is +// a prerequisite. Labeled sections are not supported on Darwin/iOS. #ifdef ABSL_HAVE_ATTRIBUTE_SECTION #error ABSL_HAVE_ATTRIBUTE_SECTION cannot be directly set #elif (ABSL_HAVE_ATTRIBUTE(section) || \ (defined(__GNUC__) && !defined(__clang__))) && \ - !defined(__APPLE__) + !defined(__APPLE__) && ABSL_HAVE_ATTRIBUTE_WEAK #define ABSL_HAVE_ATTRIBUTE_SECTION 1 // ABSL_ATTRIBUTE_SECTION |