[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

4 files changed, 6 insertions, 6 deletions

diff --git a/lldb/source/Breakpoint/BreakpointResolverAddress.cpp b/lldb/source/Breakpoint/BreakpointResolverAddress.cpp
index d3610982026..8a6fd6a2692 100644
--- a/lldb/source/Breakpoint/BreakpointResolverAddress.cpp
+++ b/lldb/source/Breakpoint/BreakpointResolverAddress.cpp
@@ -124,7 +124,7 @@ Searcher::CallbackReturn
 BreakpointResolverAddress::SearchCallback(SearchFilter &filter,
                                           SymbolContext &context, Address *addr,
                                           bool containing) {
-  assert(m_breakpoint != NULL);
+  assert(m_breakpoint != nullptr);
 
   if (filter.AddressPasses(m_addr)) {
     if (m_breakpoint->GetNumLocations() == 0) {
diff --git a/lldb/source/Breakpoint/BreakpointResolverFileLine.cpp b/lldb/source/Breakpoint/BreakpointResolverFileLine.cpp
index 494b4c77d02..a6095be3164 100644
--- a/lldb/source/Breakpoint/BreakpointResolverFileLine.cpp
+++ b/lldb/source/Breakpoint/BreakpointResolverFileLine.cpp
@@ -204,7 +204,7 @@ BreakpointResolverFileLine::SearchCallback(SearchFilter &filter,
                                            Address *addr, bool containing) {
   SymbolContextList sc_list;
 
-  assert(m_breakpoint != NULL);
+  assert(m_breakpoint != nullptr);
 
   // There is a tricky bit here.  You can have two compilation units that
   // #include the same file, and in one of them the function at m_line_number
diff --git a/lldb/source/Breakpoint/BreakpointResolverFileRegex.cpp b/lldb/source/Breakpoint/BreakpointResolverFileRegex.cpp
index c17dcb8342c..0b2485245b7 100644
--- a/lldb/source/Breakpoint/BreakpointResolverFileRegex.cpp
+++ b/lldb/source/Breakpoint/BreakpointResolverFileRegex.cpp
@@ -98,7 +98,7 @@ BreakpointResolverFileRegex::SearchCallback(SearchFilter &filter,
                                             SymbolContext &context,
                                             Address *addr, bool containing) {
 
-  assert(m_breakpoint != NULL);
+  assert(m_breakpoint != nullptr);
   if (!context.target_sp)
     return eCallbackReturnContinue;
 
@@ -145,7 +145,7 @@ BreakpointResolverFileRegex::SearchCallback(SearchFilter &filter,
     BreakpointResolver::SetSCMatchesByLine(filter, sc_list, skip_prologue,
                                            m_regex.GetText());
   }
-  assert(m_breakpoint != NULL);
+  assert(m_breakpoint != nullptr);
 
   return Searcher::eCallbackReturnContinue;
 }
diff --git a/lldb/source/Breakpoint/BreakpointResolverScripted.cpp b/lldb/source/Breakpoint/BreakpointResolverScripted.cpp
index ae9775738f2..8363795a4d7 100644
--- a/lldb/source/Breakpoint/BreakpointResolverScripted.cpp
+++ b/lldb/source/Breakpoint/BreakpointResolverScripted.cpp
@@ -127,7 +127,7 @@ Searcher::CallbackReturn
 BreakpointResolverScripted::SearchCallback(SearchFilter &filter,
                                           SymbolContext &context, Address *addr,
                                           bool containing) {
-  assert(m_breakpoint != NULL);
+  assert(m_breakpoint != nullptr);
   bool should_continue = true;
   if (!m_implementation_sp)
     return Searcher::eCallbackReturnStop;
@@ -144,7 +144,7 @@ BreakpointResolverScripted::SearchCallback(SearchFilter &filter,
 
 lldb::SearchDepth
 BreakpointResolverScripted::GetDepth() {
-  assert(m_breakpoint != NULL);
+  assert(m_breakpoint != nullptr);
   lldb::SearchDepth depth = lldb::eSearchDepthModule;
   if (m_implementation_sp) {
     ScriptInterpreter *interp = GetScriptInterpreter();