AST: Improve a couple of comments and cast unused values to void

Make these comments a bit more explicit that they're initializing the
RawText member, and explicitly cast the unused result of getRawText to
void for clarity.

llvm-svn: 284341

1 files changed, 4 insertions, 5 deletions

diff --git a/clang/lib/AST/RawCommentList.cpp b/clang/lib/AST/RawCommentList.cpp
index 8317f76b856..881a7d9c61b 100644
--- a/clang/lib/AST/RawCommentList.cpp
+++ b/clang/lib/AST/RawCommentList.cpp
@@ -175,8 +175,8 @@ StringRef RawComment::getRawTextSlow(const SourceManager &SourceMgr) const {
 }
 
 const char *RawComment::extractBriefText(const ASTContext &Context) const {
-  // Make sure that RawText is valid.
-  getRawText(Context.getSourceManager());
+  // Lazily initialize RawText using the accessor before using it.
+  (void)getRawText(Context.getSourceManager());
 
   // Since we will be copying the resulting text, all allocations made during
   // parsing are garbage after resulting string is formed.  Thus we can use
@@ -202,8 +202,8 @@ const char *RawComment::extractBriefText(const ASTContext &Context) const {
 comments::FullComment *RawComment::parse(const ASTContext &Context,
                                          const Preprocessor *PP,
                                          const Decl *D) const {
-  // Make sure that RawText is valid.
-  getRawText(Context.getSourceManager());
+  // Lazily initialize RawText using the accessor before using it.
+  (void)getRawText(Context.getSourceManager());
 
   comments::Lexer L(Context.getAllocator(), Context.getDiagnostics(),
                     Context.getCommentCommandTraits(),
@@ -334,4 +334,3 @@ void RawCommentList::addDeserializedComments(ArrayRef<RawComment *> Deserialized
              BeforeThanCompare<RawComment>(SourceMgr));
   std::swap(Comments, MergedComments);
 }
-