Test https://its.cern.ch/jira/browse/ROOT-10621.

This was yet another instance of crash during tear down.  It 'easily' lead to no crash but was still
showing issues in valgrind
There was 2 kind of errors:
```
==1038957== Invalid write of size 1
==1038957==    at 0xC01AC9E: std::char_traits<char>::assign(char&, char const&) (char_traits.h:357)
==1038957==    by 0xC01D470: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_set_length(unsigned long) (basic_string.h:225)
==1038957==    by 0xC041DD6: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::clear() (basic_string.h:1016)
==1038957==    by 0xC3BCDC1: TClingClassInfo::FullName(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, ROOT::TMetaUtils::TNormalizedCtxt const&) const (TCling
ClassInfo.cxx:1379)
==1038957==    by 0xC3969CB: TClingBaseClassInfo::FullName(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, ROOT::TMetaUtils::TNormalizedCtxt const&) const (TClingBaseClassInfo.cxx:567)
==1038957==    by 0xC20D46F: TCling::BaseClassInfo_FullName(BaseClassInfo_t*) const (TCling.cxx:8577)
==1038957==    by 0x4D05086: TBaseClass::TBaseClass(BaseClassInfo_t*, TClass*) (TBaseClass.cxx:40)
==1038957==    by 0xC1FD03C: TCling::CreateListOfBaseClasses(TClass*) const (TCling.cxx:4406)
==1038957==    by 0x4D14308: TClass::GetListOfBases() (TClass.cxx:3760)
==1038957==    by 0x4D10FE1: TClass::GetBaseClass(TClass const*) (TClass.cxx:2782)
==1038957==    by 0x4D1853F: TClass::InheritsFrom(TClass const*) const (TClass.cxx:5002)
==1038957==    by 0x4C34137: TObject::InheritsFrom(TClass const*) const (TObject.cxx:552)
==1038957==    by 0x5391BA4: TDirectoryFile::Save() (TDirectoryFile.cxx:1564)
==1038957==    by 0x538DB5A: TDirectoryFile::Close(char const*) (TDirectoryFile.cxx:568)
==1038957==    by 0x53A9A17: TFile::Close(char const*) (TFile.cxx:994)
==1038957==    by 0x4C58672: void (anonymous namespace)::R__ListSlowClose<TDirectory>(TList*) (TROOT.cxx:1123)
==1038957==    by 0x4C51CE9: TROOT::CloseFiles() (TROOT.cxx:1173)
==1038957==    by 0x4C5236B: TROOT::EndOfProcessCleanups() (TROOT.cxx:1252)
==1038957==    by 0x4BE7AB5: CallEndOfProcessCleanups() (TApplication.cxx:90)
==1038957==    by 0x7B14E2C: __run_exit_handlers (in /usr/lib64/libc.so.6)
==1038957==    by 0x7B14F6F: exit (in /usr/lib64/libc.so.6)
==1038957==    by 0x7AFD5D6: (below main) (in /usr/lib64/libc.so.6)
==1038957==  Address 0xb1ee930 is 0 bytes inside a block of size 121 free'd
==1038957==    at 0x4848A4D: operator delete(void*, unsigned long) (vg_replace_malloc.c:1181)
==1038957==    by 0xC01EB76: __gnu_cxx::new_allocator<char>::deallocate(char*, unsigned long) (new_allocator.h:145)
==1038957==    by 0xC01E273: std::allocator_traits<std::allocator<char> >::deallocate(std::allocator<char>&, char*, unsigned long) (alloc_traits.h:496)
==1038957==    by 0xC01D91B: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_destroy(unsigned long) (basic_string.h:245)
==1038957==    by 0xC01D341: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_dispose() (basic_string.h:240)
==1038957==    by 0xC01C803: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string() (basic_string.h:672)
==1038957==    by 0x7B1555E: __call_tls_dtors (in /usr/lib64/libc.so.6)
==1038957==    by 0x7B14F25: __run_exit_handlers (in /usr/lib64/libc.so.6)
==1038957==    by 0x7B14F6F: exit (in /usr/lib64/libc.so.6)
==1038957==    by 0x7AFD5D6: (below main) (in /usr/lib64/libc.so.6)
==1038957==  Block was alloc'd at
==1038957==    at 0x4844EE1: operator new(unsigned long) (vg_replace_malloc.c:487)
==1038957==    by 0x791124D: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_mutate(unsigned long, unsigned long, char const*, unsigned long) (basic_string.
tcc:307)
==1038957==    by 0x7912B82: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_append(char const*, unsigned long) (basic_string.tcc:395)
==1038957==    by 0x4CEEF7F: TClassEdit::TSplitType::ShortType(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int) (TClassEdit.cxx:500)
==1038957==    by 0xC03076F: ROOT::TMetaUtils::GetNormalizedName(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, clang::QualType const&, cling::Interpreter co
nst&, ROOT::TMetaUtils::TNormalizedCtxt const&) (TClingUtils.cxx:4180)
==1038957==    by 0xC3BCE2F: TClingClassInfo::FullName(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, ROOT::TMetaUtils::TNormalizedCtxt const&) const (TCling
ClassInfo.cxx:1385)
==1038957==    by 0xC3969CB: TClingBaseClassInfo::FullName(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, ROOT::TMetaUtils::TNormalizedCtxt const&) const (TC
lingBaseClassInfo.cxx:567)
==1038957==    by 0xC20D46F: TCling::BaseClassInfo_FullName(BaseClassInfo_t*) const (TCling.cxx:8577)
==1038957==    by 0x4D05086: TBaseClass::TBaseClass(BaseClassInfo_t*, TClass*) (TBaseClass.cxx:40)
```

```
==1043887== Invalid write of size 8
==1043887==    at 0x48516D0: memmove (vg_replace_strmem.c:1414)
==1043887==    by 0x61D7416: TString::Replace(int, int, char const*, int) (TString.cxx:1073)
==1043887==    by 0x61D5997: TString::operator=(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (TString.cxx:334)
==1043887==    by 0x9CF27C1: TCling::MethodInfo_GetMangledName(MethodInfo_t*) const (TCling.cxx:9143)
==1043887==    by 0x62AEF87: TFunction::TFunction(MethodInfo_t*) (TFunction.cxx:45)
==1043887==    by 0x62BE03F: TMethod::TMethod(MethodInfo_t*, TClass*) (TMethod.cxx:41)
==1043887==    by 0x62BBA20: TListOfFunctions::Get(void const*) (TListOfFunctions.cxx:297)
==1043887==    by 0x628D5A4: TClass::GetClassMethodWithPrototype(char const*, char const*, bool, ROOT::EFunctionMatchMode) (TClass.cxx:4641)
==1043887==    by 0x6292A4B: TClass::Property() const (TClass.cxx:6243)
==1043887==    by 0x6291D99: TClass::IsForeign() const (TClass.cxx:6058)
==1043887==    by 0x59069C8: TBufferFile::WriteVersion(TClass const*, bool) (TBufferFile.cxx:3157)
==1043887==    by 0x61AB480: TObject::Streamer(TBuffer&) (TObject.cxx:933)
==1043887==    by 0x62390AE: TList::Streamer(TBuffer&) (TList.cxx:1248)
==1043887==    by 0x59C4B03: TKey::TKey(TObject const*, char const*, int, TDirectory*) (TKey.cxx:246)
==1043887==    by 0x5994C31: TFile::WriteStreamerInfo() (TFile.cxx:3897)
==1043887==    by 0x59878C6: TFile::Close(char const*) (TFile.cxx:976)
==1043887==    by 0x61CE672: void (anonymous namespace)::R__ListSlowClose<TDirectory>(TList*) (TROOT.cxx:1123)
==1043887==    by 0x61C7CE9: TROOT::CloseFiles() (TROOT.cxx:1173)
==1043887==    by 0x61C836B: TROOT::EndOfProcessCleanups() (TROOT.cxx:1252)
==1043887==    by 0x615DAB5: CallEndOfProcessCleanups() (TApplication.cxx:90)
==1043887==    by 0x6906E2C: __run_exit_handlers (in /usr/lib64/libc.so.6)
==1043887==    by 0x6906F6F: exit (in /usr/lib64/libc.so.6)
==1043887==    by 0x68EF5D6: (below main) (in /usr/lib64/libc.so.6)
==1043887==  Address 0x8d5dab0 is 0 bytes inside a block of size 64 free'd
==1043887==    at 0x484A547: operator delete[](void*) (vg_replace_malloc.c:1410)
==1043887==    by 0x5908D80: TString::UnLink() const (TString.h:263)
==1043887==    by 0x61D566B: TString::~TString() (TString.cxx:253)
==1043887==    by 0x690755E: __call_tls_dtors (in /usr/lib64/libc.so.6)
==1043887==    by 0x6906F25: __run_exit_handlers (in /usr/lib64/libc.so.6)
==1043887==    by 0x6906F6F: exit (in /usr/lib64/libc.so.6)
==1043887==    by 0x68EF5D6: (below main) (in /usr/lib64/libc.so.6)
==1043887==  Block was alloc'd at
==1043887==    at 0x4846627: operator new[](unsigned long) (vg_replace_malloc.c:729)
==1043887==    by 0x61D7462: TString::Replace(int, int, char const*, int) (TString.cxx:1078)
==1043887==    by 0x61D5997: TString::operator=(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (TString.cxx:334)
==1043887==    by 0x9CF27C1: TCling::MethodInfo_GetMangledName(MethodInfo_t*) const (TCling.cxx:9143)
==1043887==    by 0x62AEF87: TFunction::TFunction(MethodInfo_t*) (TFunction.cxx:45)
==1043887==    by 0x62BE03F: TMethod::TMethod(MethodInfo_t*, TClass*) (TMethod.cxx:41)
==1043887==    by 0x62BBA20: TListOfFunctions::Get(void const*)(TListOfFunctions.cxx:297)
```

Author: pcanal

root/meta/tclass/CMakeLists.txt

@@ -116,4 +116,12 @@ ROOTTEST_ADD_TEST(TClassAtTearDown
 		  COPY_TO_BUILDDIR empty.root
 		  OUTREF execTClassAtTearDown.ref)
 
+ROOTTEST_GENERATE_EXECUTABLE(TFileTearDown TFileTearDown.cxx
+                             LIBRARIES Core RIO Hist Rint
+                             FIXTURES_SETUP TFileTearDownExec)
+
+ROOTTEST_ADD_TEST(TFileTearDown
+                  EXEC ./TFileTearDown
+                  FIXTURES_REQUIRED TFileTearDownExec)
+
 ROOTTEST_ADD_TESTDIRS()

root/meta/tclass/TFileTearDown.cxx

@@ -0,0 +1,13 @@
+#include <TH1.h>
+#include <TFile.h>
+#include <TRint.h>
+
+int main() {
+  TRint *app = new TRint("app", 0, NULL);
+  TFile *f=new TFile("foo.root", "RECREATE");
+  TH1 *foo = new TH1D("foo","foo",10,0,10);
+  (void)app;
+  (void)f;
+  (void)foo;
+  return 0;
+}