chromium/tools/clang/blink_gc_plugin/tests/pure_virtual_trace.txt

In file included from pure_virtual_trace.cpp:5:
./pure_virtual_trace.h:14:2: warning: [blink-gc] Garbage collected class 'A' is not permitted to declare a pure-virtual trace method.
 virtual void Trace(Visitor*) const = 0;
 ^
1 warning generated.