[PATCH] D45675: [LibFuzzer] Report when custom counters are available.

[Dan Liew via Phabricator via llvm-commits]

delcypher created this revision.
delcypher added reviewers: kcc, george.karpenkov.
Herald added a subscriber: Sanitizers.

[LibFuzzer] Report when custom counters are available.

This upstreams a feature from the JFS solver's fork of LibFuzzer.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D45675

Files:
  lib/fuzzer/FuzzerTracePC.cpp
  test/fuzzer/extra-counters.test


Index: test/fuzzer/extra-counters.test
===================================================================
--- test/fuzzer/extra-counters.test
+++ test/fuzzer/extra-counters.test
@@ -2,6 +2,7 @@
 
 RUN: %cpp_compiler %S/TableLookupTest.cpp -o %t-TableLookupTest
 RUN: not %t-TableLookupTest -print_final_stats=1 2>&1 | FileCheck %s
+CHECK: INFO: 4096 Extra Counters
 CHECK: BINGO
 // Expecting >= 4096 new_units_added
 CHECK: stat::new_units_added:{{.*[4][0-9][0-9][0-9]}}
Index: lib/fuzzer/FuzzerTracePC.cpp
===================================================================
--- lib/fuzzer/FuzzerTracePC.cpp
+++ lib/fuzzer/FuzzerTracePC.cpp
@@ -134,6 +134,9 @@
   }
   if (size_t NumClangCounters = ClangCountersEnd() - ClangCountersBegin())
     Printf("INFO: %zd Clang Coverage Counters\n", NumClangCounters);
+
+  if (size_t NumExtraCounters = ExtraCountersEnd() - ExtraCountersBegin())
+    Printf("INFO: %zd Extra Counters\n", NumExtraCounters);
 }
 
 ATTRIBUTE_NO_SANITIZE_ALL


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