require the MAcroInfo objects are explcitly destroyed.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65179 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PPDirectives.cpp b/lib/Lex/PPDirectives.cpp
index c38310b..5a10099 100644
--- a/lib/Lex/PPDirectives.cpp
+++ b/lib/Lex/PPDirectives.cpp
@@ -24,18 +24,26 @@
// Utility Methods for Preprocessor Directive Handling.
//===----------------------------------------------------------------------===//
-MacroInfo* Preprocessor::AllocateMacroInfo(SourceLocation L) {
+MacroInfo *Preprocessor::AllocateMacroInfo(SourceLocation L) {
MacroInfo *MI;
if (!MICache.empty()) {
MI = MICache.back();
MICache.pop_back();
- }
- else MI = (MacroInfo*) BP.Allocate<MacroInfo>();
+ } else
+ MI = (MacroInfo*) BP.Allocate<MacroInfo>();
new (MI) MacroInfo(L);
return MI;
}
+/// ReleaseMacroInfo - Release the specified MacroInfo. This memory will
+/// be reused for allocating new MacroInfo objects.
+void Preprocessor::ReleaseMacroInfo(MacroInfo* MI) {
+ MICache.push_back(MI);
+ MI->Destroy();
+}
+
+
/// DiscardUntilEndOfDirective - Read and discard all tokens remaining on the
/// current line until the tok::eom token is found.
void Preprocessor::DiscardUntilEndOfDirective() {