From: George Karpenkov <ekarpenkov@apple.com>
Date: Thu, 29 Jun 2017 19:58:20 +0000 (+0000)
Subject: [libFuzzer] Add Fuzzer to the list of sanitizers which support coverage.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=78aa30a644eaec1893db971c86ee10b3c0fe6781;p=clang

[libFuzzer] Add Fuzzer to the list of sanitizers which support coverage.

Without this change, additional coverage flags specified after
-fsanitize=fuzzer would get discarded.

https://reviews.llvm.org/D34794

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@306734 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Driver/SanitizerArgs.cpp b/lib/Driver/SanitizerArgs.cpp
index 3a30f2a289..7a442c83e1 100644
--- a/lib/Driver/SanitizerArgs.cpp
+++ b/lib/Driver/SanitizerArgs.cpp
@@ -32,7 +32,7 @@ enum : SanitizerMask {
   RequiresPIE = DataFlow,
   NeedsUnwindTables = Address | Thread | Memory | DataFlow,
   SupportsCoverage = Address | KernelAddress | Memory | Leak | Undefined |
-                     Integer | Nullability | DataFlow,
+                     Integer | Nullability | DataFlow | Fuzzer,
   RecoverableByDefault = Undefined | Integer | Nullability,
   Unrecoverable = Unreachable | Return,
   LegacyFsanitizeRecoverMask = Undefined | Integer,
diff --git a/test/Driver/fuzzer.c b/test/Driver/fuzzer.c
index 35bf4315c9..989b3b9f63 100644
--- a/test/Driver/fuzzer.c
+++ b/test/Driver/fuzzer.c
@@ -15,10 +15,14 @@
 //
 // CHECK-LIBCXX-DARWIN: -lc++
 
+
 // Check that we don't link in libFuzzer.a when producing a shared object.
 // RUN: %clang -fsanitize=fuzzer %s -shared -o %t.so -### 2>&1 | FileCheck --check-prefixes=CHECK-NOLIB-SO %s
 // CHECK-NOLIB-SO-NOT: libLLVMFuzzer.a
 
+// RUN: %clang -fsanitize=fuzzer -fsanitize-coverage=trace-pc %s -### 2>&1 | FileCheck --check-prefixes=CHECK-MSG %s
+// CHECK-MSG-NOT: argument unused during compilation
+
 int LLVMFuzzerTestOneInput(const char *Data, long Size) {
   return 0;
 }