[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/ObjectContainer/BSD-Archive/ObjectContainerBSDArchive.cpp b/lldb/source/Plugins/ObjectContainer/BSD-Archive/ObjectContainerBSDArchive.cpp
index c364dd07578..ddd7ba7ce82 100644
--- a/lldb/source/Plugins/ObjectContainer/BSD-Archive/ObjectContainerBSDArchive.cpp
+++ b/lldb/source/Plugins/ObjectContainer/BSD-Archive/ObjectContainerBSDArchive.cpp
@@ -121,7 +121,7 @@ ObjectContainerBSDArchive::Object::Extract(const DataExtractor &data,
     if (ar_name_len > 0) {
       const void *ar_name_ptr = data.GetData(&offset, ar_name_len);
       // Make sure there was enough data for the string value and bail if not
-      if (ar_name_ptr == NULL)
+      if (ar_name_ptr == nullptr)
         return LLDB_INVALID_OFFSET;
       str.assign((const char *)ar_name_ptr, ar_name_len);
       ar_name.SetCString(str.c_str());
@@ -190,7 +190,7 @@ ObjectContainerBSDArchive::Archive::FindObject(
       return &m_objects[match->value];
     }
   }
-  return NULL;
+  return nullptr;
 }
 
 ObjectContainerBSDArchive::Archive::shared_ptr
@@ -351,7 +351,7 @@ ObjectContainer *ObjectContainerBSDArchive::CreateInstance(
       }
     }
   }
-  return NULL;
+  return nullptr;
 }
 
 bool ObjectContainerBSDArchive::MagicBytesMatch(const DataExtractor &data) {
@@ -378,7 +378,7 @@ void ObjectContainerBSDArchive::SetArchive(Archive::shared_ptr &archive_sp) {
 ObjectContainerBSDArchive::~ObjectContainerBSDArchive() {}
 
 bool ObjectContainerBSDArchive::ParseHeader() {
-  if (m_archive_sp.get() == NULL) {
+  if (m_archive_sp.get() == nullptr) {
     if (m_data.GetByteSize() > 0) {
       ModuleSP module_sp(GetModule());
       if (module_sp) {
@@ -391,7 +391,7 @@ bool ObjectContainerBSDArchive::ParseHeader() {
       m_data.Clear();
     }
   }
-  return m_archive_sp.get() != NULL;
+  return m_archive_sp.get() != nullptr;
 }
 
 void ObjectContainerBSDArchive::Dump(Stream *s) const {