[regexp] Fix the demangling hack for profiling

schuay · V8 LUCI CQ · commit e2e6dd827946 · 2025-10-16T02:29:44.000-07:00
The magic string is `.<`, not `.>`. See the linked code in pprof. This fixes the anti-demangling hack originally added in https://chromium-review.googlesource.com/c/v8/v8/+/5953393. Change-Id: Ifd1f1d7e867f6afd42695ada4677a461a81a71be Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/7048339 Auto-Submit: Jakob Linke <jgruber@chromium.org> Reviewed-by: Patrick Thier <pthier@chromium.org> Commit-Queue: Patrick Thier <pthier@chromium.org> Commit-Queue: Jakob Linke <jgruber@chromium.org> Cr-Commit-Position: refs/heads/main@{#103149}
diff --git a/src/logging/log.cc b/src/logging/log.cc
@@ -337,7 +337,7 @@ void CodeEventLogger::RegExpCodeCreateEvent(DirectHandle<AbstractCode> code,
   // regexp patterns.
   name_buffer_->Reset();
   // https://github.com/google/pprof/blob/4cf4322d492d108a9d6526d10844e04792982cbb/internal/symbolizer/symbolizer.go#L312.
-  name_buffer_->AppendBytes("RegExp.>");
+  name_buffer_->AppendBytes("RegExp.<");
   name_buffer_->AppendBytes(" src: '");
   name_buffer_->AppendString(*source);
   name_buffer_->AppendBytes("' flags: '");
