http://llvm.org/bugs/show_bug.cgi?id=12332
Bug #: 12332
Summary: NULL dereference in MicrosoftMangle.cpp on "operator
new" mangling
Product: clang
Version: trunk
Platform: PC
OS/Version: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: C++
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Repro:
$ more operator_new.cpp
void f(unsigned int);
int main() {
f(42);
char *ptr = new char;
}
-> mangles "void f(unsigned int)" fine, crashes on mangling "void* operator
new(unsigned int) ..."
Slightly easier to repro with an intermediate var and assert:
llvm\tools\clang$ svn diff lib\AST\MicrosoftMangle.cpp
Index: lib/AST/MicrosoftMangle.cpp
===================================================================
--- lib/AST/MicrosoftMangle.cpp (revision 153267)
+++ lib/AST/MicrosoftMangle.cpp (working copy)
@@ -767,8 +767,11 @@
// get mangled right.
for (FunctionDecl::param_const_iterator Parm = D->param_begin(),
ParmEnd = D->param_end();
- Parm != ParmEnd; ++Parm)
- mangleType((*Parm)->getTypeSourceInfo()->getType());
+ Parm != ParmEnd; ++Parm) {
+ TypeSourceInfo *source_info = (*Parm)->getTypeSourceInfo();
+ assert(source_info);
+ mangleType(source_info->getType());
+ }
} else {
for (FunctionProtoType::arg_type_iterator Arg = Proto->arg_type_begin(),
ArgEnd = Proto->arg_type_end();
--
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