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authorGravatar Abseil Team <absl-team@google.com>2022-04-12 09:04:16 -0700
committerGravatar Derek Mauro <dmauro@google.com>2022-04-12 16:43:29 -0400
commitac1398a6296de03413d7b88df4b4aa16e9e450cc (patch)
tree3bcf121b140c90ad0e4651488d6a3b282cd1e355 /absl/base/config.h
parente854df09dfcb35056c1d42420028648ee0ebebaf (diff)
Export of internal Abseil changes
-- f4c7e510922668c68be4aa79a00867c3d3ca9f95 by Derek Mauro <dmauro@google.com>: Many improvements to LeakChecker builds The presence of the LeakChecker is now detected when possible. GCC users using LeakChecker in standalone mode still need to use -DLEAK_CHECKER. This is now documented in the header. The hacky targets used for testing leak checking have been removed in favor of testing in AddressSanitizer mode on Kokoro. Fixes #885 Fixes #1153 PiperOrigin-RevId: 441203393 Change-Id: Ibe64ef6b104bcaf31839ff7184e558cc86abdd1c -- 5c70a23aa83b8152ab95d2cf21662fc63c80ef7d by Abseil Team <absl-team@google.com>: Add a benchmark for stacktrace PiperOrigin-RevId: 441196473 Change-Id: I4c9aa2e797aa2cae09abfaaee3abe5c09eb62fc4 -- 50b406052273b9d5bad04a7860a96e4d5d956c02 by Abseil Team <absl-team@google.com>: Internal change. PiperOrigin-RevId: 441114481 Change-Id: I667af7a50d5631ca91289dd24c91ba90233e0184 -- 568b4eaac120b420bce5290179d407d2b57d5bae by Dino Radakovic <dinor@google.com>: Internal change PiperOrigin-RevId: 440894155 Change-Id: Ia587ffc65a8321126585fb363b7c0ca8cc2a0da2 -- d53948eace4f3a10ac5a6c1496dc51b81adc412c by Abseil Team <absl-team@google.com>: Explicitly give internal linkage to symbols which are not used outside of their translation units. PiperOrigin-RevId: 440424519 Change-Id: I531c5e229d443375483b7550a34f48042589a99b GitOrigin-RevId: f4c7e510922668c68be4aa79a00867c3d3ca9f95
Diffstat (limited to 'absl/base/config.h')
-rw-r--r--absl/base/config.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/absl/base/config.h b/absl/base/config.h
index 429dd353..3f5ace3f 100644
--- a/absl/base/config.h
+++ b/absl/base/config.h
@@ -797,10 +797,27 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
// ABSL_HAVE_LEAK_SANITIZER
//
// LeakSanitizer (or lsan) is a detector of memory leaks.
+// https://clang.llvm.org/docs/LeakSanitizer.html
+// https://github.com/google/sanitizers/wiki/AddressSanitizerLeakSanitizer
+//
+// The macro ABSL_HAVE_LEAK_SANITIZER can be used to detect at compile-time
+// whether the LeakSanitizer is potentially available. However, just because the
+// LeakSanitizer is available does not mean it is active. Use the
+// always-available run-time interface in //absl/debugging/leak_check.h for
+// interacting with LeakSanitizer.
#ifdef ABSL_HAVE_LEAK_SANITIZER
#error "ABSL_HAVE_LEAK_SANITIZER cannot be directly set."
+#elif defined(LEAK_SANITIZER)
+// GCC provides no method for detecting the presense of the standalone
+// LeakSanitizer (-fsanitize=leak), so GCC users of -fsanitize=leak should also
+// use -DLEAK_SANITIZER.
+#define ABSL_HAVE_LEAK_SANITIZER 1
+// Clang standalone LeakSanitizer (-fsanitize=leak)
#elif ABSL_HAVE_FEATURE(leak_sanitizer)
#define ABSL_HAVE_LEAK_SANITIZER 1
+#elif defined(ABSL_HAVE_ADDRESS_SANITIZER)
+// GCC or Clang using the LeakSanitizer integrated into AddressSanitizer.
+#define ABSL_HAVE_LEAK_SANITIZER 1
#endif
// ABSL_HAVE_CLASS_TEMPLATE_ARGUMENT_DEDUCTION