CTest: Fix '-T MemCheck' command-line support for sanitizers

In commit 49948f7221 (ctest_memcheck: Add support for ThreadSanitizer,
2014-07-07, v3.1.0-rc1~322^2~1) and commit 1e005eadbc (CTest: Fix
MemoryCheckType from 'ctest -T MemCheck', 2014-07-15, v3.1.0-rc1~298^2),
the `CMakeCommand` internal setting was left set only when using `ctest
-S` scripts.  Instead simply use CTest's corresponding CMake directly
without passing it through an internal setting.

Fixes: #20584

Source/CTest/cmCTestMemCheckHandler.cxx

@@ -297,9 +297,6 @@ void cmCTestMemCheckHandler::PopulateCustomVectors(cmMakefile* mf)
 
   this->CTest->PopulateCustomVector(mf, "CTEST_CUSTOM_MEMCHECK_IGNORE",
                                     this->CustomTestsIgnore);
-  std::string cmake = cmSystemTools::GetCMakeCommand();
-  this->CTest->SetCTestConfiguration("CMakeCommand", cmake.c_str(),
-                                     this->Quiet);
 }
 
 int cmCTestMemCheckHandler::GetDefectCount()
@@ -490,31 +487,31 @@ bool cmCTestMemCheckHandler::InitializeMemoryChecking()
   }
   if (this->CTest->GetCTestConfiguration("MemoryCheckType") ==
       "AddressSanitizer") {
-    this->MemoryTester = this->CTest->GetCTestConfiguration("CMakeCommand");
+    this->MemoryTester = cmSystemTools::GetCMakeCommand();
     this->MemoryTesterStyle = cmCTestMemCheckHandler::ADDRESS_SANITIZER;
     this->LogWithPID = true; // even if we give the log file the pid is added
   }
   if (this->CTest->GetCTestConfiguration("MemoryCheckType") ==
       "LeakSanitizer") {
-    this->MemoryTester = this->CTest->GetCTestConfiguration("CMakeCommand");
+    this->MemoryTester = cmSystemTools::GetCMakeCommand();
     this->MemoryTesterStyle = cmCTestMemCheckHandler::LEAK_SANITIZER;
     this->LogWithPID = true; // even if we give the log file the pid is added
   }
   if (this->CTest->GetCTestConfiguration("MemoryCheckType") ==
       "ThreadSanitizer") {
-    this->MemoryTester = this->CTest->GetCTestConfiguration("CMakeCommand");
+    this->MemoryTester = cmSystemTools::GetCMakeCommand();
     this->MemoryTesterStyle = cmCTestMemCheckHandler::THREAD_SANITIZER;
     this->LogWithPID = true; // even if we give the log file the pid is added
   }
   if (this->CTest->GetCTestConfiguration("MemoryCheckType") ==
       "MemorySanitizer") {
-    this->MemoryTester = this->CTest->GetCTestConfiguration("CMakeCommand");
+    this->MemoryTester = cmSystemTools::GetCMakeCommand();
     this->MemoryTesterStyle = cmCTestMemCheckHandler::MEMORY_SANITIZER;
     this->LogWithPID = true; // even if we give the log file the pid is added
   }
   if (this->CTest->GetCTestConfiguration("MemoryCheckType") ==
       "UndefinedBehaviorSanitizer") {
-    this->MemoryTester = this->CTest->GetCTestConfiguration("CMakeCommand");
+    this->MemoryTester = cmSystemTools::GetCMakeCommand();
     this->MemoryTesterStyle = cmCTestMemCheckHandler::UB_SANITIZER;
     this->LogWithPID = true; // even if we give the log file the pid is added
   }

Tests/RunCMake/CTestCommandLine/MemCheckSan.cmake

@@ -0,0 +1,7 @@
+set(MEMORYCHECK_COMMAND "")
+include(CTest)
+add_test(
+  NAME TestSan
+  COMMAND ${CMAKE_COMMAND}
+    -P ${CMAKE_CURRENT_LIST_DIR}/../ctest_memcheck/test${MEMORYCHECK_TYPE}.cmake
+  )

Tests/RunCMake/CTestCommandLine/RunCMakeTest.cmake

@@ -345,3 +345,24 @@ run_NoTests()
 
 # Check the configuration type variable is passed
 run_ctest(check-configuration-type)
+
+function(run_MemCheckSan case opts)
+  # Use a single build tree for a few tests without cleaning.
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/MemCheckSan${case}-build)
+  set(RunCMake_TEST_OPTIONS
+    "-DMEMORYCHECK_TYPE=${case}Sanitizer"
+    "-DMEMORYCHECK_SANITIZER_OPTIONS=${opts}"
+    )
+  run_cmake(MemCheckSan)
+  unset(RunCMake_TEST_OPTIONS)
+  set(RunCMake_TEST_NO_CLEAN 1)
+  set(RunCMake-stdout-file "../ctest_memcheck/Dummy${case}Sanitizer-stdout.txt")
+  run_cmake_command(MemCheckSan${case}-ctest
+    ${CMAKE_CTEST_COMMAND} -C Debug -M Experimental -T MemCheck -V
+    )
+endfunction()
+run_MemCheckSan(Address "simulate_sanitizer=1:report_bugs=1:history_size=5:exitcode=55")
+run_MemCheckSan(Leak "simulate_sanitizer=1:report_bugs=1:history_size=5:exitcode=55")
+run_MemCheckSan(Memory "simulate_sanitizer=1:report_bugs=1:history_size=5:exitcode=55")
+run_MemCheckSan(Thread "report_bugs=1:history_size=5:exitcode=55")
+run_MemCheckSan(UndefinedBehavior "simulate_sanitizer=1")