[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

2 files changed, 6 insertions, 6 deletions

diff --git a/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp b/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp
index 70c13182183..4aa9fb634b6 100644
--- a/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp
+++ b/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp
@@ -67,8 +67,8 @@ bool UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly(
 
     const bool prefer_file_cache = true;
     DisassemblerSP disasm_sp(Disassembler::DisassembleBytes(
-        m_arch, NULL, NULL, range.GetBaseAddress(), opcode_data, opcode_size,
-        99999, prefer_file_cache));
+        m_arch, nullptr, nullptr, range.GetBaseAddress(), opcode_data,
+        opcode_size, 99999, prefer_file_cache));
 
     Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
 
@@ -213,7 +213,7 @@ bool UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly(
               lldb_private::FormatEntity::Entry format;
               FormatEntity::Parse("${frame.pc}: ", format);
               inst->Dump(&strm, inst_list.GetMaxOpcocdeByteSize(), show_address,
-                         show_bytes, NULL, NULL, NULL, &format, 0);
+                         show_bytes, nullptr, nullptr, nullptr, &format, 0);
               log->PutString(strm.GetString());
             }
 
@@ -296,11 +296,11 @@ UnwindAssembly *
 UnwindAssemblyInstEmulation::CreateInstance(const ArchSpec &arch) {
   std::unique_ptr<EmulateInstruction> inst_emulator_up(
       EmulateInstruction::FindPlugin(arch, eInstructionTypePrologueEpilogue,
-                                     NULL));
+                                     nullptr));
   // Make sure that all prologue instructions are handled
   if (inst_emulator_up)
     return new UnwindAssemblyInstEmulation(arch, inst_emulator_up.release());
-  return NULL;
+  return nullptr;
 }
 
 // PluginInterface protocol in UnwindAssemblyParser_x86
diff --git a/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.h b/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.h
index 5232d083321..9125bd5b1fe 100644
--- a/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.h
+++ b/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.h
@@ -65,7 +65,7 @@ private:
   UnwindAssemblyInstEmulation(const lldb_private::ArchSpec &arch,
                               lldb_private::EmulateInstruction *inst_emulator)
       : UnwindAssembly(arch), m_inst_emulator_up(inst_emulator),
-        m_range_ptr(NULL), m_unwind_plan_ptr(NULL), m_curr_row(),
+        m_range_ptr(nullptr), m_unwind_plan_ptr(nullptr), m_curr_row(),
         m_cfa_reg_info(), m_fp_is_cfa(false), m_register_values(),
         m_pushed_regs(), m_curr_row_modified(false),
         m_forward_branch_offset(0) {