[PATCH] D82926: [libfuzzer] [clang] Add __has_feature(fuzzing_coverage)

Mitch Phillips via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Tue Jun 30 17:23:53 PDT 2020


hctim updated this revision to Diff 274656.
hctim added a comment.

Changed the filename and fixed up the inverted test.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D82926/new/

https://reviews.llvm.org/D82926

Files:
  clang/include/clang/Basic/Features.def
  clang/test/Lexer/has_feature_fuzzing_coverage.cpp


Index: clang/test/Lexer/has_feature_fuzzing_coverage.cpp
===================================================================
--- /dev/null
+++ clang/test/Lexer/has_feature_fuzzing_coverage.cpp
@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 -E  %s -o - | FileCheck --check-prefix=CHECK-NONE %s
+// RUN: %clang_cc1 -E -fsanitize=fuzzer %s -o - \
+// RUN:   | FileCheck --check-prefix=CHECK-ENABLED %s
+// RUN: %clang_cc1 -E -fsanitize=fuzzer-no-link %s -o - \
+// RUN:   | FileCheck --check-prefix=CHECK-ENABLED %s
+
+#if __has_feature(fuzzing_coverage)
+int FuzzingCoverageEnabled();
+#else
+int FuzzingCoverageDisabled();
+#endif
+
+// CHECK-NONE: FuzzingCoverageDisabled
+// CHECK-ENABLED: FuzzingCoverageEnabled
Index: clang/include/clang/Basic/Features.def
===================================================================
--- clang/include/clang/Basic/Features.def
+++ clang/include/clang/Basic/Features.def
@@ -49,6 +49,9 @@
 FEATURE(xray_instrument, LangOpts.XRayInstrument)
 FEATURE(undefined_behavior_sanitizer,
         LangOpts.Sanitize.hasOneOf(SanitizerKind::Undefined))
+FEATURE(fuzzing_coverage,
+        LangOpts.Sanitize.hasOneOf(SanitizerKind::Fuzzer |
+                                   SanitizerKind::FuzzerNoLink))
 FEATURE(assume_nonnull, true)
 FEATURE(attribute_analyzer_noreturn, true)
 FEATURE(attribute_availability, true)


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