Break SIGTRAP test cpp file out into separate file

Author: DanBlackwell

compiler-rt/test/fuzzer/SigTrapTest.cpp

@@ -0,0 +1,30 @@
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
+#include <assert.h>
+#include <cstddef>
+#include <cstdint>
+#include <cstdlib>
+#include <iostream>
+#include <ostream>
+#include <signal.h>
+
+static volatile int Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  assert(Data);
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        std::cout << "BINGO; Found the target, exiting\n" << std::flush;
+        raise(SIGTRAP);
+      }
+    }
+  }
+  return 0;
+}
+

compiler-rt/test/fuzzer/SimpleTest.cpp

@@ -9,9 +9,6 @@
 #include <cstdlib>
 #include <iostream>
 #include <ostream>
-#ifdef SIGTRAP_TEST
-#  include <signal.h>
-#endif
 
 static volatile int Sink;
 
@@ -23,11 +20,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
       Sink = 2;
       if (Size > 2 && Data[2] == '!') {
         std::cout << "BINGO; Found the target, exiting\n" << std::flush;
-#ifdef SIGTRAP_TEST
-        raise(SIGTRAP);
-#else
         exit(0);
-#endif
       }
     }
   }

compiler-rt/test/fuzzer/sig-trap.test

@@ -1,7 +1,7 @@
-RUN: %cpp_compiler %S/SimpleTest.cpp -DSIGTRAP_TEST -o %t-SigTrapTest
+RUN: %cpp_compiler %S/SigTrapTest.cpp -o %t
 
-RUN: not %run %t-SigTrapTest            2>&1 | FileCheck %s
+RUN: not %run %t            2>&1 | FileCheck %s
 CHECK: BINGO
 CHECK: ERROR: libFuzzer: deadly signal
 
-RUN: trap "%run %t-SigTrapTest -handle_trap=0" TRAP
+RUN: trap "%run %t -handle_trap=0" TRAP