https://llvm.org/bugs/show_bug.cgi?id=25561
Bug ID: 25561
Summary: Clang assertion failure on template instantiation
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: rtr...@google.com
CC: ismail.pazarb...@gmail.com, llvm-bugs@lists.llvm.org
Classification: Unclassified
In clang::Sema::ActOnExplicitInstantiation in lib/Sema/SemaTemplate.cpp:7259,
Clang hits an assertion when attempting to cast a TemplateDecl to a
ClassTemplateDecl.
7259: ClassTemplateDecl *ClassTemplate = cast<ClassTemplateDecl>(TD);
test.cc:
class A {};
template <template <typename> class B>
class C {
template class B<A>;
};
clang -cc1 test.cc
clang: ../include/llvm/Support/Casting.h:237: typename cast_retty<X, Y
*>::ret_type llvm::cast(Y *) [X = clang::ClassTemplateDecl, Y =
clang::TemplateDecl]: Assertion `isa<X>(Val) && "cast<Ty>() argument of
incompatible type!"' failed.
...
Stack dump:
0. Program arguments: clang -cc1 test.cc
1. test.cc:4:22: current parser token ';'
2. test.cc:3:1: parsing struct/union/class body 'C'
Aborted (core dumped)
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