Use a shared (reader) lock in absl_flags::WasPresentOnCommandLine

PiperOrigin-RevId: 553209806 Change-Id: I6828c3a5df1981471bca7f2f6cb16dfd60e77a96

Use a shared (reader) lock in absl_flags::WasPresentOnCommandLine
PiperOrigin-RevId: 553209806 Change-Id: I6828c3a5df1981471bca7f2f6cb16dfd60e77a96
d2de5312 · Abseil Team · Copybara-Service · fdf5be11 · d2de5312
Commit d2de5312 authored Aug 02, 2023 by Abseil Team Committed by Copybara-Service Aug 02, 2023
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absl/flags/parse.cc
+1 -1

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--- a/absl/flags/parse.cc
+++ b/absl/flags/parse.cc
@@ -637,7 +637,7 @@ void ReportUnrecognizedFlags(
 // --------------------------------------------------------------------
 bool WasPresentOnCommandLine(absl::string_view flag_name) {
-  absl::MutexLock l(&specified_flags_guard);
+  absl::ReaderMutexLock l(&specified_flags_guard);
  ABSL_INTERNAL_CHECK(specified_flags != nullptr,
                      "ParseCommandLine is not invoked yet");