[lldb] NFC modernize codebase with modernize-use-nullptr

Summary:
NFC = [[ https://llvm.org/docs/Lexicon.html#nfc | Non functional change ]]

This commit is the result of modernizing the LLDB codebase by using
`nullptr` instread of `0` or `NULL`. See
https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-nullptr.html
for more information.

This is the command I ran and I to fix and format the code base:

```
run-clang-tidy.py \
	-header-filter='.*' \
	-checks='-*,modernize-use-nullptr' \
	-fix ~/dev/llvm-project/lldb/.* \
	-format \
	-style LLVM \
	-p ~/llvm-builds/debug-ninja-gcc
```

NOTE: There were also changes to `llvm/utils/unittest` but I did not
include them because I felt that maybe this library shall be updated in
isolation somehow.

NOTE: I know this is a rather large commit but it is a nobrainer in most
parts.

Reviewers: martong, espindola, shafik, #lldb, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: arsenm, jvesely, nhaehnle, hiraditya, JDevlieghere, teemperor, rnkovacs, emaste, kubamracek, nemanjai, ki.stfu, javed.absar, arichardson, kbarton, jrtc27, MaskRay, atanasyan, dexonsmith, arphaman, jfb, jsji, jdoerfert, lldb-commits, llvm-commits

Tags: #lldb, #llvm

Differential Revision: https://reviews.llvm.org/D61847

llvm-svn: 361484

1 files changed, 5 insertions, 5 deletions

diff --git a/lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp b/lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp
index ca2847f6a8c..24683e68718 100644
--- a/lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp
+++ b/lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp
@@ -46,7 +46,7 @@ static const char *vtable_demangled_prefix = "vtable for ";
 bool ItaniumABILanguageRuntime::CouldHaveDynamicValue(ValueObject &in_value) {
   const bool check_cxx = true;
   const bool check_objc = false;
-  return in_value.GetCompilerType().IsPossibleDynamicType(NULL, check_cxx,
+  return in_value.GetCompilerType().IsPossibleDynamicType(nullptr, check_cxx,
                                                           check_objc);
 }
 
@@ -69,7 +69,7 @@ TypeAndOrName ItaniumABILanguageRuntime::GetTypeInfoFromVTableAddress(
         target.GetImages().ResolveSymbolContextForAddress(
             vtable_addr, eSymbolContextSymbol, sc);
         Symbol *symbol = sc.symbol;
-        if (symbol != NULL) {
+        if (symbol != nullptr) {
           const char *name =
               symbol->GetMangled()
                   .GetDemangledName(lldb::eLanguageTypeC_plus_plus)
@@ -306,7 +306,7 @@ TypeAndOrName ItaniumABILanguageRuntime::FixUpDynamicType(
 }
 
 bool ItaniumABILanguageRuntime::IsVTableName(const char *name) {
-  if (name == NULL)
+  if (name == nullptr)
     return false;
 
   // Can we maybe ask Clang about this?
@@ -326,7 +326,7 @@ ItaniumABILanguageRuntime::CreateInstance(Process *process,
       language == eLanguageTypeC_plus_plus_14)
     return new ItaniumABILanguageRuntime(process);
   else
-    return NULL;
+    return nullptr;
 }
 
 class CommandObjectMultiwordItaniumABI_Demangle : public CommandObjectParsed {
@@ -490,7 +490,7 @@ lldb::BreakpointSP ItaniumABILanguageRuntime::CreateExceptionBreakpoint(
   Target &target = m_process->GetTarget();
   FileSpecList filter_modules;
   BreakpointResolverSP exception_resolver_sp =
-      CreateExceptionResolver(NULL, catch_bp, throw_bp, for_expressions);
+      CreateExceptionResolver(nullptr, catch_bp, throw_bp, for_expressions);
   SearchFilterSP filter_sp(CreateExceptionSearchFilter());
   const bool hardware = false;
   const bool resolve_indirect_functions = false;