implement PR5654: add -fassume-sane-operator-new, which is enabled by default, and adds the malloc attribute to the global function new() and to the overloaded new operators.
feel free to chage the name to this lengthy argument
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91543 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExprCXX.cpp b/lib/Sema/SemaExprCXX.cpp
index 8870a59..9108137 100644
--- a/lib/Sema/SemaExprCXX.cpp
+++ b/lib/Sema/SemaExprCXX.cpp
@@ -715,13 +715,14 @@
QualType VoidPtr = Context.getPointerType(Context.VoidTy);
QualType SizeT = Context.getSizeType();
+ bool AssumeSaneOperatorNew = getLangOptions().AssumeSaneOperatorNew;
DeclareGlobalAllocationFunction(
Context.DeclarationNames.getCXXOperatorName(OO_New),
- VoidPtr, SizeT);
+ VoidPtr, SizeT, AssumeSaneOperatorNew);
DeclareGlobalAllocationFunction(
Context.DeclarationNames.getCXXOperatorName(OO_Array_New),
- VoidPtr, SizeT);
+ VoidPtr, SizeT, AssumeSaneOperatorNew);
DeclareGlobalAllocationFunction(
Context.DeclarationNames.getCXXOperatorName(OO_Delete),
Context.VoidTy, VoidPtr);
@@ -733,7 +734,8 @@
/// DeclareGlobalAllocationFunction - Declares a single implicit global
/// allocation function if it doesn't already exist.
void Sema::DeclareGlobalAllocationFunction(DeclarationName Name,
- QualType Return, QualType Argument) {
+ QualType Return, QualType Argument,
+ bool AddMallocAttr) {
DeclContext *GlobalCtx = Context.getTranslationUnitDecl();
// Check if this function is already declared.
@@ -766,6 +768,10 @@
FunctionDecl::Create(Context, GlobalCtx, SourceLocation(), Name,
FnType, /*TInfo=*/0, FunctionDecl::None, false, true);
Alloc->setImplicit();
+
+ if (AddMallocAttr)
+ Alloc->addAttr(::new (Context) MallocAttr());
+
ParmVarDecl *Param = ParmVarDecl::Create(Context, Alloc, SourceLocation(),
0, Argument, /*TInfo=*/0,
VarDecl::None, 0);