Export of internal Abseil changes

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5b9d5ce21074c0541432555d383d1b9c5898b553 by Gennadiy Rozental <rogeeff@google.com>:

Convert FlagSaver into public API

PiperOrigin-RevId: 314799739

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5f796c9862b1177f161f4b10fe1a84698ebbb5cf by Abseil Team <absl-team@google.com>:

Google-internal changes only.

PiperOrigin-RevId: 314786474

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67f2ae0ac5ae73bcd9d57a058ac4fea8fc1243ba by Gennadiy Rozental <rogeeff@google.com>:

Makes sure stacktrace_generic is only used with glibc.

Fixes #701

PiperOrigin-RevId: 314726944

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efb1ef3636b0698b79d3ee3590f12c4dff32a3cb by Samuel Benzaquen <sbenza@google.com>:

Take the bits into account when reserving the space for the operation, not just
the exponent.

PiperOrigin-RevId: 314622744
GitOrigin-RevId: 5b9d5ce21074c0541432555d383d1b9c5898b553
Change-Id: I080a5e333e2dc1545b5aa0417882f7ac7116a20c

2 files changed, 1 insertions, 26 deletions

diff --git a/absl/flags/internal/registry.h b/absl/flags/internal/registry.h
index 1e655a3e..c72eebe2 100644
--- a/absl/flags/internal/registry.h
+++ b/absl/flags/internal/registry.h
@@ -89,31 +89,6 @@ inline bool RetiredFlag(const char* flag_name) {
   return flags_internal::Retire(flag_name, base_internal::FastTypeId<T>());
 }
 
-//-----------------------------------------------------------------------------
-// Saves the states (value, default value, whether the user has set
-// the flag, registered validators, etc) of all flags, and restores
-// them when the FlagSaver is destroyed.
-//
-// This class is thread-safe.  However, its destructor writes to
-// exactly the set of flags that have changed value during its
-// lifetime, so concurrent _direct_ access to those flags
-// (i.e. FLAGS_foo instead of {Get,Set}CommandLineOption()) is unsafe.
-
-class FlagSaver {
- public:
-  FlagSaver();
-  ~FlagSaver();
-
-  FlagSaver(const FlagSaver&) = delete;
-  void operator=(const FlagSaver&) = delete;
-
-  // Prevents saver from restoring the saved state of flags.
-  void Ignore();
-
- private:
-  class FlagSaverImpl* impl_;  // we use pimpl here to keep API steady
-};
-
 }  // namespace flags_internal
 ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/flags/internal/usage_test.cc b/absl/flags/internal/usage_test.cc
index 46f85b55..6e583fbe 100644
--- a/absl/flags/internal/usage_test.cc
+++ b/absl/flags/internal/usage_test.cc
@@ -89,7 +89,7 @@ class UsageReportingTest : public testing::Test {
   }
 
  private:
-  flags::FlagSaver flag_saver_;
+  absl::FlagSaver flag_saver_;
 };
 
 // --------------------------------------------------------------------