https://bugs.llvm.org/show_bug.cgi?id=45033
Bug ID: 45033
Summary: Assertion failed: !NodePtr->isKnownSentinel() with
boost::intrusive_ptr on Windows
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
Created attachment 23172
--> https://bugs.llvm.org/attachment.cgi?id=23172&action=edit
Minimal example
The following code seems to cause clang and clang-cl, 9.0.0 and trunk, to
crash:
intrusive_ptr<C> a;
try {
a = mk();
mk();
}
catch (...) {
}
Debug logs show
INSTCOMBINE ITERATION #1 on ?crash@@YAXXZ
IC: ADDING: 27 instrs to worklist
IC: Visiting: %call1 = invoke %struct.C* @"?mk@@YAPEAUC@@XZ"()
to label %invoke.cont2 unwind label %catch.dispatch
IC: Visiting: %a.sroa.0.0 = phi i64 [ %0, %invoke.cont2 ], [ 0, %entry ]
IC: Visiting: %1 = catchswitch within none [label %catch] unwind label
%ehcleanup
IC: Visiting: %2 = catchpad within %1 [i8* null, i32 64, i8* null]
IC: Visiting: catchret from %2 to label %try.cont
IC: Visiting: %a.sroa.0.1 = phi i64 [ %0, %invoke.cont2 ], [ %a.sroa.0.0,
%catch ]
IC: ADD: %a.sroa.0.1.ptr = phi %struct.C*
Assertion failed: !NodePtr->isKnownSentinel(), file
C:\src\llvm_package_2663a25f\llvm-project\llvm\include\llvm/ADT/ilist_iterator.h,
line 139
I've attached the logs and full trimmed down source.
Thanks.
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