From 3ee08f329825b3f68c988b212bffd332b58e4275 Mon Sep 17 00:00:00 2001
From: Jeremy Nimmer <jeremy.nimmer@tri.global>
Date: Mon, 6 Jan 2025 09:05:32 -0800
Subject: [PATCH] PR #1801: Remove unncessary <iostream> includes

Imported from GitHub PR https://github.com/abseil/abseil-cpp/pull/1801

Including `<iostream>` means introducing the static (global) constructors and destructors for `std::cin`, `std::cerr`, and `std::cout`. That extra `init` and `fini` code is [undesirable](https://google.github.io/styleguide/cppguide.html#Static_and_Global_Variables) when those streams are not actually used.
Merge 4207b23cd481676abfee4476a66e0ae11d440298 into f339ea31b8dfc139075ba3feb4d848beaee5639e

Merging this change closes #1801

COPYBARA_INTEGRATE_REVIEW=https://github.com/abseil/abseil-cpp/pull/1801 from jwnimmer-tri:iostream 4207b23cd481676abfee4476a66e0ae11d440298
PiperOrigin-RevId: 712548264
Change-Id: Ia04b581753622d357d3e989d0b1ae6d938fd7335
---
 absl/random/BUILD.bazel                 | 5 ++++-
 absl/random/CMakeLists.txt              | 1 +
 absl/random/internal/randen_engine.h    | 3 ++-
 absl/random/seed_gen_exception.cc       | 5 ++---
 absl/strings/internal/charconv_bigint.h | 2 +-
 5 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/absl/random/BUILD.bazel b/absl/random/BUILD.bazel
index 742ab76e6a8..ef8ac7ef602 100644
--- a/absl/random/BUILD.bazel
+++ b/absl/random/BUILD.bazel
@@ -93,7 +93,10 @@ cc_library(
     hdrs = ["seed_gen_exception.h"],
     copts = ABSL_DEFAULT_COPTS,
     linkopts = ABSL_DEFAULT_LINKOPTS,
-    deps = ["//absl/base:config"],
+    deps = [
+        "//absl/base:config",
+        "//absl/base:raw_logging_internal",
+    ],
 )
 
 cc_library(
diff --git a/absl/random/CMakeLists.txt b/absl/random/CMakeLists.txt
index 2e4f0e459f0..1d8464be97b 100644
--- a/absl/random/CMakeLists.txt
+++ b/absl/random/CMakeLists.txt
@@ -211,6 +211,7 @@ absl_cc_library(
     ${ABSL_DEFAULT_LINKOPTS}
   DEPS
     absl::config
+    absl::raw_logging_internal
 )
 
 absl_cc_library(
diff --git a/absl/random/internal/randen_engine.h b/absl/random/internal/randen_engine.h
index fe2d9f6c159..925e1bbab55 100644
--- a/absl/random/internal/randen_engine.h
+++ b/absl/random/internal/randen_engine.h
@@ -18,9 +18,10 @@
 #include <algorithm>
 #include <cinttypes>
 #include <cstdlib>
-#include <iostream>
+#include <istream>
 #include <iterator>
 #include <limits>
+#include <ostream>
 #include <type_traits>
 
 #include "absl/base/internal/endian.h"
diff --git a/absl/random/seed_gen_exception.cc b/absl/random/seed_gen_exception.cc
index fdcb54a86cd..6fb4ad37665 100644
--- a/absl/random/seed_gen_exception.cc
+++ b/absl/random/seed_gen_exception.cc
@@ -14,9 +14,8 @@
 
 #include "absl/random/seed_gen_exception.h"
 
-#include <iostream>
-
 #include "absl/base/config.h"
+#include "absl/base/internal/raw_logging.h"
 
 namespace absl {
 ABSL_NAMESPACE_BEGIN
@@ -36,7 +35,7 @@ void ThrowSeedGenException() {
 #ifdef ABSL_HAVE_EXCEPTIONS
   throw absl::SeedGenException();
 #else
-  std::cerr << kExceptionMessage << std::endl;
+  ABSL_RAW_LOG(FATAL, "%s", kExceptionMessage);
   std::terminate();
 #endif
 }
diff --git a/absl/strings/internal/charconv_bigint.h b/absl/strings/internal/charconv_bigint.h
index cb297676631..2c7a3366464 100644
--- a/absl/strings/internal/charconv_bigint.h
+++ b/absl/strings/internal/charconv_bigint.h
@@ -17,7 +17,7 @@
 
 #include <algorithm>
 #include <cstdint>
-#include <iostream>
+#include <ostream>
 #include <string>
 
 #include "absl/base/config.h"