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authorGravatar Abseil Team <absl-team@google.com>2021-03-29 15:46:35 -0700
committerGravatar Andy Getz <durandal@google.com>2021-03-30 03:29:51 -0400
commit9fe35195495da41ab8f307abb61ed4169afa396e (patch)
tree6ee41f53b052f3f479a12dcc179f6ef884b31278 /absl/base
parenta09b5de0d57d7b2179210989ab63361c3c1894f5 (diff)
Export of internal Abseil changes
-- 6b5be2524a088d0f4e8475794dc71232a24e94d8 by Abseil Team <absl-team@google.com>: Enable ABSL_HAVE_ATTRIBUTE_WEAK for Windows with Clang >= 9.0.0 The bug (https://bugs.llvm.org/show_bug.cgi?id=37598) motivated the workaround was fixed in 9.0.0. PiperOrigin-RevId: 365682074 -- c16b7784978a370658dce6d82cb7055316a79bcc by Abseil Team <absl-team@google.com>: Add IsFlat() evaluation to GetFlatAux for RingBuffer PiperOrigin-RevId: 365666501 -- c064eb686a3c036e093e71126c45f97d3a921569 by Abseil Team <absl-team@google.com>: Implement C++11 compatible std::remove_cvref added in C++20 PiperOrigin-RevId: 365606639 -- af2e7e055172da914e63c05308aedb68e197661e by Abseil Team <absl-team@google.com>: Add IsFlat() support to CordRepRing PiperOrigin-RevId: 365562090 -- 2cfeff9280f4967c4f828812bfe153b4e9cbabb7 by Abseil Team <absl-team@google.com>: Make unit test for TryFlat on 'substring of rep' explicit PiperOrigin-RevId: 365081382 GitOrigin-RevId: 6b5be2524a088d0f4e8475794dc71232a24e94d8 Change-Id: Ibb577748176217ce237614a6fe77c05375a97003
Diffstat (limited to 'absl/base')
-rw-r--r--absl/base/attributes.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/absl/base/attributes.h b/absl/base/attributes.h
index 4a8581e1..325e2f8d 100644
--- a/absl/base/attributes.h
+++ b/absl/base/attributes.h
@@ -131,14 +131,14 @@
// ABSL_ATTRIBUTE_WEAK
//
// Tags a function as weak for the purposes of compilation and linking.
-// 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
+// Weak attributes did not work properly in LLVM's Windows backend before
+// 9.0.0, so disable them there. See https://bugs.llvm.org/show_bug.cgi?id=37598
// for further information.
// The MinGW compiler doesn't complain about the weak attribute until the link
// step, presumably because Windows doesn't use ELF binaries.
#if (ABSL_HAVE_ATTRIBUTE(weak) || \
(defined(__GNUC__) && !defined(__clang__))) && \
- !(defined(__llvm__) && defined(_WIN32)) && !defined(__MINGW32__)
+ (!defined(_WIN32) || __clang_major__ < 9) && !defined(__MINGW32__)
#undef ABSL_ATTRIBUTE_WEAK
#define ABSL_ATTRIBUTE_WEAK __attribute__((weak))
#define ABSL_HAVE_ATTRIBUTE_WEAK 1