Export of internal Abseil changes

--
990253454819ce26ff1dda9ab4bbc145b61d01e4 by Xiaoyi Zhang <zhangxy@google.com>:

Import github PR https://github.com/abseil/abseil-cpp/pull/645

PiperOrigin-RevId: 303119797

--
5ac845cb7929b7d1eaf59a309afd811db5001175 by Abseil Team <absl-team@google.com>:

Fix internal exception spec compatibility error

PiperOrigin-RevId: 303104081

--
3290595dd866eecab3c7044e2e3ca0adb74f1bf5 by Gennadiy Rozental <rogeeff@google.com>:

Use FlagValue<T> to represent the value of a flag. Place it directly after
FlagImpl and use a computed offset refer to it.

The offset is computed based on the assumption that the `value_` data member
is placed directly after the impl_ data member in Flag<T>.

This change will allow us to migrate to `T`-specific storage in the generic case.

This change decreases the overhead for int flags by 32 bytes.

PiperOrigin-RevId: 303038099

--
f2b37722cd7a6d3a60ef9713f0d2bbff56f3ddbf by Derek Mauro <dmauro@google.com>:

Minor correctness fix for an ABSL_HAVE_BUILTIN conditional

PiperOrigin-RevId: 302980666

--
39c079a6141ae1c5728af8bf33a39c8aff9deb9f by Abseil Team <absl-team@google.com>:

Use ABSL_HARDENING_ASSERT in b-tree and SwissTable iterators.

PiperOrigin-RevId: 302970075

--
9668a044e080c789df32bcaa1ffb5100831cd9fa by Benjamin Barenblat <bbaren@google.com>:

Correct `add_subdirectory` line in CMake googletest support

Commit bcefbdcdf6ad85046ccacee0aeffba5404d3e528 added support for building with CMake against a local googletest checkout, but I missed a line when constructing the diff. Change the `add_subdirectory` line to reference the correct directories.

PiperOrigin-RevId: 302947488

--
0a3c10fabf80a43ca69ab8b1570030e55f2be741 by Andy Soffer <asoffer@google.com>:

Remove unused distribution format traits.

PiperOrigin-RevId: 302896176

--
0478f2f6270e5ed64c0e28ec09556ca90b2d46a9 by Samuel Benzaquen <sbenza@google.com>:

Fix for CWG:2310.

PiperOrigin-RevId: 302734089

--
3cb978dda5cae5905affdc0914dcc2d27671ed11 by Samuel Benzaquen <sbenza@google.com>:

Fix the Allocate/Deallocate functions to use the same underlying allocator type.

PiperOrigin-RevId: 302721804

--
ae38d3984fb68b4e3ddc165fa8d5c24d5936be52 by Matthew Brown <matthewbr@google.com>:

Internal Change

PiperOrigin-RevId: 302717314

--
7357cf7abd03cc60b6e82b5f28a8e34935c3b4dc by Andy Getzendanner <durandal@google.com>:

Fix typo: s/ABSL_HARDENED_ASSERT/ABSL_HARDENING_ASSERT/

PiperOrigin-RevId: 302532164
GitOrigin-RevId: 990253454819ce26ff1dda9ab4bbc145b61d01e4
Change-Id: Ie595a221c16e1e7e1255ad42e029b646c5f3e11d

9 files changed, 22 insertions, 398 deletions

diff --git a/absl/random/BUILD.bazel b/absl/random/BUILD.bazel
index f78fbc7eedb8..4d94e1ba4155 100644
--- a/absl/random/BUILD.bazel
+++ b/absl/random/BUILD.bazel
@@ -53,7 +53,6 @@ cc_library(
         "bernoulli_distribution.h",
         "beta_distribution.h",
         "discrete_distribution.h",
-        "distribution_format_traits.h",
         "distributions.h",
         "exponential_distribution.h",
         "gaussian_distribution.h",
@@ -141,16 +140,12 @@ cc_library(
 cc_library(
     name = "mocking_bit_gen",
     testonly = 1,
-    srcs = [
-        "mocking_bit_gen.cc",
-    ],
     hdrs = [
         "mocking_bit_gen.h",
     ],
     linkopts = ABSL_DEFAULT_LINKOPTS,
     deps = [
         ":distributions",
-        "//absl/base:raw_logging_internal",
         "//absl/container:flat_hash_map",
         "//absl/meta:type_traits",
         "//absl/random/internal:distribution_caller",
diff --git a/absl/random/CMakeLists.txt b/absl/random/CMakeLists.txt
index efa55d8fa73b..69bedbd6b0da 100644
--- a/absl/random/CMakeLists.txt
+++ b/absl/random/CMakeLists.txt
@@ -102,8 +102,6 @@ absl_cc_library(
   HDRS
     "mock_distributions.h"
     "mocking_bit_gen.h"
-  SRCS
-    "mocking_bit_gen.cc"
   COPTS
     ${ABSL_DEFAULT_COPTS}
   LINKOPTS
@@ -168,7 +166,6 @@ absl_cc_library(
     "bernoulli_distribution.h"
     "beta_distribution.h"
     "discrete_distribution.h"
-    "distribution_format_traits.h"
     "distributions.h"
     "exponential_distribution.h"
     "gaussian_distribution.h"
diff --git a/absl/random/bit_gen_ref.h b/absl/random/bit_gen_ref.h
index e8771162e5fb..59591a479d8c 100644
--- a/absl/random/bit_gen_ref.h
+++ b/absl/random/bit_gen_ref.h
@@ -132,7 +132,7 @@ namespace random_internal {
 
 template <>
 struct DistributionCaller<absl::BitGenRef> {
-  template <typename DistrT, typename FormatT, typename... Args>
+  template <typename DistrT, typename... Args>
   static typename DistrT::result_type Call(absl::BitGenRef* gen_ref,
                                            Args&&... args) {
     auto* mock_ptr = gen_ref->mocked_gen_ptr_;
@@ -140,8 +140,7 @@ struct DistributionCaller<absl::BitGenRef> {
       DistrT dist(std::forward<Args>(args)...);
       return dist(*gen_ref);
     } else {
-      return mock_ptr->template Call<DistrT, FormatT>(
-          std::forward<Args>(args)...);
+      return mock_ptr->template Call<DistrT>(std::forward<Args>(args)...);
     }
   }
 };
diff --git a/absl/random/distribution_format_traits.h b/absl/random/distribution_format_traits.h
deleted file mode 100644
index 22b358cc8c37..000000000000
--- a/absl/random/distribution_format_traits.h
+++ /dev/null
@@ -1,278 +0,0 @@
-//
-// Copyright 2018 The Abseil Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-#ifndef ABSL_RANDOM_DISTRIBUTION_FORMAT_TRAITS_H_
-#define ABSL_RANDOM_DISTRIBUTION_FORMAT_TRAITS_H_
-
-#include <string>
-#include <tuple>
-#include <typeinfo>
-
-#include "absl/meta/type_traits.h"
-#include "absl/random/bernoulli_distribution.h"
-#include "absl/random/beta_distribution.h"
-#include "absl/random/exponential_distribution.h"
-#include "absl/random/gaussian_distribution.h"
-#include "absl/random/log_uniform_int_distribution.h"
-#include "absl/random/poisson_distribution.h"
-#include "absl/random/uniform_int_distribution.h"
-#include "absl/random/uniform_real_distribution.h"
-#include "absl/random/zipf_distribution.h"
-#include "absl/strings/str_cat.h"
-#include "absl/strings/str_join.h"
-#include "absl/strings/string_view.h"
-#include "absl/types/span.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-
-struct IntervalClosedClosedTag;
-struct IntervalClosedOpenTag;
-struct IntervalOpenClosedTag;
-struct IntervalOpenOpenTag;
-
-namespace random_internal {
-
-// ScalarTypeName defines a preferred hierarchy of preferred type names for
-// scalars, and is evaluated at compile time for the specific type
-// specialization.
-template <typename T>
-constexpr const char* ScalarTypeName() {
-  static_assert(std::is_integral<T>() || std::is_floating_point<T>(), "");
-  // clang-format off
-    return
-        std::is_same<T, float>::value ? "float" :
-        std::is_same<T, double>::value ? "double" :
-        std::is_same<T, long double>::value ? "long double" :
-        std::is_same<T, bool>::value ? "bool" :
-        std::is_signed<T>::value && sizeof(T) == 1 ? "int8_t" :
-        std::is_signed<T>::value && sizeof(T) == 2 ? "int16_t" :
-        std::is_signed<T>::value && sizeof(T) == 4 ? "int32_t" :
-        std::is_signed<T>::value && sizeof(T) == 8 ? "int64_t" :
-        std::is_unsigned<T>::value && sizeof(T) == 1 ? "uint8_t" :
-        std::is_unsigned<T>::value && sizeof(T) == 2 ? "uint16_t" :
-        std::is_unsigned<T>::value && sizeof(T) == 4 ? "uint32_t" :
-        std::is_unsigned<T>::value && sizeof(T) == 8 ? "uint64_t" :
-            "undefined";
-  // clang-format on
-
-  // NOTE: It would be nice to use typeid(T).name(), but that's an
-  // implementation-defined attribute which does not necessarily
-  // correspond to a name. We could potentially demangle it
-  // using, e.g. abi::__cxa_demangle.
-}
-
-// Distribution traits used by DistributionCaller and internal implementation
-// details of the mocking framework.
-/*
-struct DistributionFormatTraits {
-   // Returns the parameterized name of the distribution function.
-   static constexpr const char* FunctionName()
-   // Format DistrT parameters.
-   static std::string FormatArgs(DistrT& dist);
-   // Format DistrT::result_type results.
-   static std::string FormatResults(DistrT& dist);
-};
-*/
-template <typename DistrT>
-struct DistributionFormatTraits;
-
-template <typename R>
-struct DistributionFormatTraits<absl::uniform_int_distribution<R>> {
-  using distribution_t = absl::uniform_int_distribution<R>;
-  using result_t = typename distribution_t::result_type;
-
-  static constexpr const char* Name() { return "Uniform"; }
-
-  static std::string FunctionName() {
-    return absl::StrCat(Name(), "<", ScalarTypeName<R>(), ">");
-  }
-  static std::string FormatArgs(const distribution_t& d) {
-    return absl::StrCat("absl::IntervalClosedClosed, ", (d.min)(), ", ",
-                        (d.max)());
-  }
-  static std::string FormatResults(absl::Span<const result_t> results) {
-    return absl::StrJoin(results, ", ");
-  }
-};
-
-template <typename R>
-struct DistributionFormatTraits<absl::uniform_real_distribution<R>> {
-  using distribution_t = absl::uniform_real_distribution<R>;
-  using result_t = typename distribution_t::result_type;
-
-  static constexpr const char* Name() { return "Uniform"; }
-
-  static std::string FunctionName() {
-    return absl::StrCat(Name(), "<", ScalarTypeName<R>(), ">");
-  }
-  static std::string FormatArgs(const distribution_t& d) {
-    return absl::StrCat((d.min)(), ", ", (d.max)());
-  }
-  static std::string FormatResults(absl::Span<const result_t> results) {
-    return absl::StrJoin(results, ", ");
-  }
-};
-
-template <typename R>
-struct DistributionFormatTraits<absl::exponential_distribution<R>> {
-  using distribution_t = absl::exponential_distribution<R>;
-  using result_t = typename distribution_t::result_type;
-
-  static constexpr const char* Name() { return "Exponential"; }
-
-  static std::string FunctionName() {
-    return absl::StrCat(Name(), "<", ScalarTypeName<R>(), ">");
-  }
-  static std::string FormatArgs(const distribution_t& d) {
-    return absl::StrCat(d.lambda());
-  }
-  static std::string FormatResults(absl::Span<const result_t> results) {
-    return absl::StrJoin(results, ", ");
-  }
-};
-
-template <typename R>
-struct DistributionFormatTraits<absl::poisson_distribution<R>> {
-  using distribution_t = absl::poisson_distribution<R>;
-  using result_t = typename distribution_t::result_type;
-
-  static constexpr const char* Name() { return "Poisson"; }
-
-  static std::string FunctionName() {
-    return absl::StrCat(Name(), "<", ScalarTypeName<R>(), ">");
-  }
-  static std::string FormatArgs(const distribution_t& d) {
-    return absl::StrCat(d.mean());
-  }
-  static std::string FormatResults(absl::Span<const result_t> results) {
-    return absl::StrJoin(results, ", ");
-  }
-};
-
-template <>
-struct DistributionFormatTraits<absl::bernoulli_distribution> {
-  using distribution_t = absl::bernoulli_distribution;
-  using result_t = typename distribution_t::result_type;
-
-  static constexpr const char* Name() { return "Bernoulli"; }
-
-  static constexpr const char* FunctionName() { return Name(); }
-  static std::string FormatArgs(const distribution_t& d) {
-    return absl::StrCat(d.p());
-  }
-  static std::string FormatResults(absl::Span<const result_t> results) {
-    return absl::StrJoin(results, ", ");
-  }
-};
-
-template <typename R>
-struct DistributionFormatTraits<absl::beta_distribution<R>> {
-  using distribution_t = absl::beta_distribution<R>;
-  using result_t = typename distribution_t::result_type;
-
-  static constexpr const char* Name() { return "Beta"; }
-
-  static std::string FunctionName() {
-    return absl::StrCat(Name(), "<", ScalarTypeName<R>(), ">");
-  }
-  static std::string FormatArgs(const distribution_t& d) {
-    return absl::StrCat(d.alpha(), ", ", d.beta());
-  }
-  static std::string FormatResults(absl::Span<const result_t> results) {
-    return absl::StrJoin(results, ", ");
-  }
-};
-
-template <typename R>
-struct DistributionFormatTraits<absl::zipf_distribution<R>> {
-  using distribution_t = absl::zipf_distribution<R>;
-  using result_t = typename distribution_t::result_type;
-
-  static constexpr const char* Name() { return "Zipf"; }
-
-  static std::string FunctionName() {
-    return absl::StrCat(Name(), "<", ScalarTypeName<R>(), ">");
-  }
-  static std::string FormatArgs(const distribution_t& d) {
-    return absl::StrCat(d.k(), ", ", d.v(), ", ", d.q());
-  }
-  static std::string FormatResults(absl::Span<const result_t> results) {
-    return absl::StrJoin(results, ", ");
-  }
-};
-
-template <typename R>
-struct DistributionFormatTraits<absl::gaussian_distribution<R>> {
-  using distribution_t = absl::gaussian_distribution<R>;
-  using result_t = typename distribution_t::result_type;
-
-  static constexpr const char* Name() { return "Gaussian"; }
-
-  static std::string FunctionName() {
-    return absl::StrCat(Name(), "<", ScalarTypeName<R>(), ">");
-  }
-  static std::string FormatArgs(const distribution_t& d) {
-    return absl::StrJoin(std::make_tuple(d.mean(), d.stddev()), ", ");
-  }
-  static std::string FormatResults(absl::Span<const result_t> results) {
-    return absl::StrJoin(results, ", ");
-  }
-};
-
-template <typename R>
-struct DistributionFormatTraits<absl::log_uniform_int_distribution<R>> {
-  using distribution_t = absl::log_uniform_int_distribution<R>;
-  using result_t = typename distribution_t::result_type;
-
-  static constexpr const char* Name() { return "LogUniform"; }
-
-  static std::string FunctionName() {
-    return absl::StrCat(Name(), "<", ScalarTypeName<R>(), ">");
-  }
-  static std::string FormatArgs(const distribution_t& d) {
-    return absl::StrJoin(std::make_tuple((d.min)(), (d.max)(), d.base()), ", ");
-  }
-  static std::string FormatResults(absl::Span<const result_t> results) {
-    return absl::StrJoin(results, ", ");
-  }
-};
-
-template <typename NumType>
-struct UniformDistributionWrapper;
-
-template <typename NumType>
-struct DistributionFormatTraits<UniformDistributionWrapper<NumType>> {
-  using distribution_t = UniformDistributionWrapper<NumType>;
-  using result_t = NumType;
-
-  static constexpr const char* Name() { return "Uniform"; }
-
-  static std::string FunctionName() {
-    return absl::StrCat(Name(), "<", ScalarTypeName<NumType>(), ">");
-  }
-  static std::string FormatArgs(const distribution_t& d) {
-    return absl::StrCat((d.min)(), ", ", (d.max)());
-  }
-  static std::string FormatResults(absl::Span<const result_t> results) {
-    return absl::StrJoin(results, ", ");
-  }
-};
-
-}  // namespace random_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_RANDOM_DISTRIBUTION_FORMAT_TRAITS_H_
diff --git a/absl/random/distributions.h b/absl/random/distributions.h
index d026d92b9045..8680f6a66f0a 100644
--- a/absl/random/distributions.h
+++ b/absl/random/distributions.h
@@ -55,7 +55,6 @@
 #include "absl/base/internal/inline_variable.h"
 #include "absl/random/bernoulli_distribution.h"
 #include "absl/random/beta_distribution.h"
-#include "absl/random/distribution_format_traits.h"
 #include "absl/random/exponential_distribution.h"
 #include "absl/random/gaussian_distribution.h"
 #include "absl/random/internal/distributions.h"  // IWYU pragma: export
@@ -126,14 +125,13 @@ Uniform(TagType tag,
         R lo, R hi) {
   using gen_t = absl::decay_t<URBG>;
   using distribution_t = random_internal::UniformDistributionWrapper<R>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   auto a = random_internal::uniform_lower_bound(tag, lo, hi);
   auto b = random_internal::uniform_upper_bound(tag, lo, hi);
   if (a > b) return a;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, tag, lo, hi);
+      distribution_t>(&urbg, tag, lo, hi);
 }
 
 // absl::Uniform<T>(bitgen, lo, hi)
@@ -146,7 +144,6 @@ Uniform(URBG&& urbg,  // NOLINT(runtime/references)
         R lo, R hi) {
   using gen_t = absl::decay_t<URBG>;
   using distribution_t = random_internal::UniformDistributionWrapper<R>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   constexpr auto tag = absl::IntervalClosedOpen;
   auto a = random_internal::uniform_lower_bound(tag, lo, hi);
@@ -154,7 +151,7 @@ Uniform(URBG&& urbg,  // NOLINT(runtime/references)
   if (a > b) return a;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, lo, hi);
+      distribution_t>(&urbg, lo, hi);
 }
 
 // absl::Uniform(tag, bitgen, lo, hi)
@@ -172,14 +169,13 @@ Uniform(TagType tag,
   using gen_t = absl::decay_t<URBG>;
   using return_t = typename random_internal::uniform_inferred_return_t<A, B>;
   using distribution_t = random_internal::UniformDistributionWrapper<return_t>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   auto a = random_internal::uniform_lower_bound<return_t>(tag, lo, hi);
   auto b = random_internal::uniform_upper_bound<return_t>(tag, lo, hi);
   if (a > b) return a;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, tag, static_cast<return_t>(lo),
+      distribution_t>(&urbg, tag, static_cast<return_t>(lo),
                                 static_cast<return_t>(hi));
 }
 
@@ -196,7 +192,6 @@ Uniform(URBG&& urbg,  // NOLINT(runtime/references)
   using gen_t = absl::decay_t<URBG>;
   using return_t = typename random_internal::uniform_inferred_return_t<A, B>;
   using distribution_t = random_internal::UniformDistributionWrapper<return_t>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   constexpr auto tag = absl::IntervalClosedOpen;
   auto a = random_internal::uniform_lower_bound<return_t>(tag, lo, hi);
@@ -204,7 +199,7 @@ Uniform(URBG&& urbg,  // NOLINT(runtime/references)
   if (a > b) return a;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, static_cast<return_t>(lo),
+      distribution_t>(&urbg, static_cast<return_t>(lo),
                                 static_cast<return_t>(hi));
 }
 
@@ -217,10 +212,9 @@ typename absl::enable_if_t<!std::is_signed<R>::value, R>  //
 Uniform(URBG&& urbg) {  // NOLINT(runtime/references)
   using gen_t = absl::decay_t<URBG>;
   using distribution_t = random_internal::UniformDistributionWrapper<R>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg);
+      distribution_t>(&urbg);
 }
 
 // -----------------------------------------------------------------------------
@@ -248,10 +242,9 @@ bool Bernoulli(URBG&& urbg,  // NOLINT(runtime/references)
                double p) {
   using gen_t = absl::decay_t<URBG>;
   using distribution_t = absl::bernoulli_distribution;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, p);
+      distribution_t>(&urbg, p);
 }
 
 // -----------------------------------------------------------------------------
@@ -281,10 +274,9 @@ RealType Beta(URBG&& urbg,  // NOLINT(runtime/references)
 
   using gen_t = absl::decay_t<URBG>;
   using distribution_t = typename absl::beta_distribution<RealType>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, alpha, beta);
+      distribution_t>(&urbg, alpha, beta);
 }
 
 // -----------------------------------------------------------------------------
@@ -314,10 +306,9 @@ RealType Exponential(URBG&& urbg,  // NOLINT(runtime/references)
 
   using gen_t = absl::decay_t<URBG>;
   using distribution_t = typename absl::exponential_distribution<RealType>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, lambda);
+      distribution_t>(&urbg, lambda);
 }
 
 // -----------------------------------------------------------------------------
@@ -346,10 +337,9 @@ RealType Gaussian(URBG&& urbg,  // NOLINT(runtime/references)
 
   using gen_t = absl::decay_t<URBG>;
   using distribution_t = typename absl::gaussian_distribution<RealType>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, mean, stddev);
+      distribution_t>(&urbg, mean, stddev);
 }
 
 // -----------------------------------------------------------------------------
@@ -389,10 +379,9 @@ IntType LogUniform(URBG&& urbg,  // NOLINT(runtime/references)
 
   using gen_t = absl::decay_t<URBG>;
   using distribution_t = typename absl::log_uniform_int_distribution<IntType>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, lo, hi, base);
+      distribution_t>(&urbg, lo, hi, base);
 }
 
 // -----------------------------------------------------------------------------
@@ -420,10 +409,9 @@ IntType Poisson(URBG&& urbg,  // NOLINT(runtime/references)
 
   using gen_t = absl::decay_t<URBG>;
   using distribution_t = typename absl::poisson_distribution<IntType>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, mean);
+      distribution_t>(&urbg, mean);
 }
 
 // -----------------------------------------------------------------------------
@@ -453,10 +441,9 @@ IntType Zipf(URBG&& urbg,  // NOLINT(runtime/references)
 
   using gen_t = absl::decay_t<URBG>;
   using distribution_t = typename absl::zipf_distribution<IntType>;
-  using format_t = random_internal::DistributionFormatTraits<distribution_t>;
 
   return random_internal::DistributionCaller<gen_t>::template Call<
-      distribution_t, format_t>(&urbg, hi, q, v);
+      distribution_t>(&urbg, hi, q, v);
 }
 
 ABSL_NAMESPACE_END
diff --git a/absl/random/internal/distribution_caller.h b/absl/random/internal/distribution_caller.h
index 02603cf84355..4e0724440cbc 100644
--- a/absl/random/internal/distribution_caller.h
+++ b/absl/random/internal/distribution_caller.h
@@ -33,20 +33,7 @@ struct DistributionCaller {
   // Call the provided distribution type. The parameters are expected
   // to be explicitly specified.
   // DistrT is the distribution type.
-  // FormatT is the formatter type:
-  //
-  // struct FormatT {
-  //   using result_type = distribution_t::result_type;
-  //   static std::string FormatCall(
-  //       const distribution_t& distr,
-  //       absl::Span<const result_type>);
-  //
-  //   static std::string FormatExpectation(
-  //       absl::string_view match_args,
-  //       absl::Span<const result_t> results);
-  // }
-  //
-  template <typename DistrT, typename FormatT, typename... Args>
+  template <typename DistrT, typename... Args>
   static typename DistrT::result_type Call(URBG* urbg, Args&&... args) {
     DistrT dist(std::forward<Args>(args)...);
     return dist(*urbg);
diff --git a/absl/random/internal/mocking_bit_gen_base.h b/absl/random/internal/mocking_bit_gen_base.h
index eeeae9d295b2..23ecaf6c7e63 100644
--- a/absl/random/internal/mocking_bit_gen_base.h
+++ b/absl/random/internal/mocking_bit_gen_base.h
@@ -16,8 +16,6 @@
 #ifndef ABSL_RANDOM_INTERNAL_MOCKING_BIT_GEN_BASE_H_
 #define ABSL_RANDOM_INTERNAL_MOCKING_BIT_GEN_BASE_H_
 
-#include <atomic>
-#include <deque>
 #include <string>
 #include <typeinfo>
 
@@ -28,27 +26,6 @@ namespace absl {
 ABSL_NAMESPACE_BEGIN
 namespace random_internal {
 
-// MockingBitGenExpectationFormatter is invoked to format unsatisfied mocks
-// and remaining results into a description string.
-template <typename DistrT, typename FormatT>
-struct MockingBitGenExpectationFormatter {
-  std::string operator()(absl::string_view args) {
-    return absl::StrCat(FormatT::FunctionName(), "(", args, ")");
-  }
-};
-
-// MockingBitGenCallFormatter is invoked to format each distribution call
-// into a description string for the mock log.
-template <typename DistrT, typename FormatT>
-struct MockingBitGenCallFormatter {
-  std::string operator()(const DistrT& dist,
-                         const typename DistrT::result_type& result) {
-    return absl::StrCat(
-        FormatT::FunctionName(), "(", FormatT::FormatArgs(dist), ") => {",
-        FormatT::FormatResults(absl::MakeSpan(&result, 1)), "}");
-  }
-};
-
 class MockingBitGenBase {
   template <typename>
   friend struct DistributionCaller;
@@ -61,14 +38,9 @@ class MockingBitGenBase {
   static constexpr result_type(max)() { return (generator_type::max)(); }
   result_type operator()() { return gen_(); }
 
-  MockingBitGenBase() : gen_(), observed_call_log_() {}
   virtual ~MockingBitGenBase() = default;
 
  protected:
-  const std::deque<std::string>& observed_call_log() {
-    return observed_call_log_;
-  }
-
   // CallImpl is the type-erased virtual dispatch.
   // The type of dist is always distribution<T>,
   // The type of result is always distribution<T>::result_type.
@@ -81,10 +53,9 @@ class MockingBitGenBase {
   }
 
   // Call the generating distribution function.
-  // Invoked by DistributionCaller<>::Call<DistT, FormatT>.
+  // Invoked by DistributionCaller<>::Call<DistT>.
   // DistT is the distribution type.
-  // FormatT is the distribution formatter traits type.
-  template <typename DistrT, typename FormatT, typename... Args>
+  template <typename DistrT, typename... Args>
   typename DistrT::result_type Call(Args&&... args) {
     using distr_result_type = typename DistrT::result_type;
     using ArgTupleT = std::tuple<absl::decay_t<Args>...>;
@@ -100,17 +71,11 @@ class MockingBitGenBase {
       result = dist(gen_);
     }
 
-    // TODO(asoffer): Forwarding the args through means we no longer need to
-    // extract them from the from the distribution in formatter traits. We can
-    // just StrJoin them.
-    observed_call_log_.push_back(
-        MockingBitGenCallFormatter<DistrT, FormatT>{}(dist, result));
     return result;
   }
 
  private:
   generator_type gen_;
-  std::deque<std::string> observed_call_log_;
 };  // namespace random_internal
 
 }  // namespace random_internal
diff --git a/absl/random/mocking_bit_gen.cc b/absl/random/mocking_bit_gen.cc
deleted file mode 100644
index 6bb1e414aeab..000000000000
--- a/absl/random/mocking_bit_gen.cc
+++ /dev/null
@@ -1,30 +0,0 @@
-//
-// Copyright 2018 The Abseil Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-#include "absl/random/mocking_bit_gen.h"
-
-#include <string>
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-MockingBitGen::~MockingBitGen() {
-
-  for (const auto& del : deleters_) {
-    del();
-  }
-}
-
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/absl/random/mocking_bit_gen.h b/absl/random/mocking_bit_gen.h
index 36cef91113e3..3d8a979e734f 100644
--- a/absl/random/mocking_bit_gen.h
+++ b/absl/random/mocking_bit_gen.h
@@ -100,7 +100,9 @@ class MockingBitGen : public absl::random_internal::MockingBitGenBase {
  public:
   MockingBitGen() {}
 
-  ~MockingBitGen() override;
+  ~MockingBitGen() override {
+    for (const auto& del : deleters_) del();
+  }
 
  private:
   template <typename DistrT, typename... Args>
@@ -182,10 +184,10 @@ namespace random_internal {
 
 template <>
 struct DistributionCaller<absl::MockingBitGen> {
-  template <typename DistrT, typename FormatT, typename... Args>
+  template <typename DistrT, typename... Args>
   static typename DistrT::result_type Call(absl::MockingBitGen* gen,
                                            Args&&... args) {
-    return gen->template Call<DistrT, FormatT>(std::forward<Args>(args)...);
+    return gen->template Call<DistrT>(std::forward<Args>(args)...);
   }
 };