Abseil LTS 2020092320200923

What's New:
* `absl::StatusOr<T>` has been released. See our [blog
  post](https://abseil.io/blog/2020-091021-status) for more
  information.
* Abseil Flags reflection interfaces have been released.
* Abseil Flags memory usage has been significantly optimized.
* Abseil now supports a "hardened" build mode. This build mode enables
  runtime checks that guard against programming errors that may lead
  to security vulnerabilities.

Notable Fixes:
* Sanitizer dynamic annotations like `AnnotateRWLockCreate` that are
  also defined by the compiler sanitizer implementation are no longer
  also defined by Abseil.
* Sanitizer macros are now prefixed with `ABSL_` to avoid naming collisions.
* Sanitizer usage is now automatically detected and no longer requires
  macros like `ADDRESS_SANITIZER` to be defined on the command line.

Breaking Changes:
* Abseil no longer contains a `dynamic_annotations` library. Users
  using a supported build system (Bazel or CMake) are unaffected by
  this, but users manually specifying link libraries may get an error
  about a missing linker input.

Baseline: 7680a5f8efe32de4753baadbd63e74e59d95bac1
Cherry picks: None

1 files changed, 9 insertions, 3 deletions

diff --git a/absl/flags/usage_config.cc b/absl/flags/usage_config.cc
index 2d837ec5..ae2f548a 100644
--- a/absl/flags/usage_config.cc
+++ b/absl/flags/usage_config.cc
@@ -15,6 +15,7 @@
 
 #include "absl/flags/usage_config.h"
 
+#include <functional>
 #include <iostream>
 #include <string>
 
@@ -50,10 +51,15 @@ namespace {
 bool ContainsHelpshortFlags(absl::string_view filename) {
   // By default we only want flags in binary's main. We expect the main
   // routine to reside in <program>.cc or <program>-main.cc or
-  // <program>_main.cc, where the <program> is the name of the binary.
+  // <program>_main.cc, where the <program> is the name of the binary
+  // (without .exe on Windows).
   auto suffix = flags_internal::Basename(filename);
-  if (!absl::ConsumePrefix(&suffix,
-                           flags_internal::ShortProgramInvocationName()))
+  auto program_name = flags_internal::ShortProgramInvocationName();
+  absl::string_view program_name_ref = program_name;
+#if defined(_WIN32)
+  absl::ConsumeSuffix(&program_name_ref, ".exe");
+#endif
+  if (!absl::ConsumePrefix(&suffix, program_name_ref))
     return false;
   return absl::StartsWith(suffix, ".") || absl::StartsWith(suffix, "-main.") ||
          absl::StartsWith(suffix, "_main.");