https://llvm.org/bugs/show_bug.cgi?id=31701
Bug ID: 31701
Summary: ICE when initializing a const class with a class
static variable template
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: charles...@playstation.sony.com
CC: dgre...@apple.com, llvm-bugs@lists.llvm.org
Classification: Unclassified
We encountered an assertion failure when compiling a test-case with class
static template variables that contains an error. The crash happens after
an appropriate error message is produced.
This ICE started on revision 245497
$ svn log -r 245497
------------------------------------------------------------------------
r245497 | rsmith | 2015-08-19 13:49:38 -0700 (Wed, 19 Aug 2015) | 2 lines
Internal-linkage variables with constant-evaluatable initializers do not need
to be emitted.
(Also reduces the set of variables that need to be eagerly deserialized when
using PCH / modules.)
------------------------------------------------------------------------
Here is the test case.
$ cat t.cpp
class C {
template<int i> static int n;
};
template <int M> class D;
template <int M>
template<int i> void D<M>::set() {
const C c = C::n<i>;
}
Here is the ICE message:
$ clang t.cpp -c
t.cpp:2:32: warning: variable templates are a C++14 extension
[-Wc++14-extensions]
template<int i> static int n;
^
t.cpp:6:28: error: out-of-line definition of 'set' from class 'D<M>' without
definition
template<int i> void D<M>::set() {
~~~~~~^
clang-4.0: /home/chli/Source/usvn/llvm/tools/clang/lib/AST/Decl.cpp:2164:
clang::APValue*
clang::VarDecl::evaluateValue(llvm::SmallVectorImpl<std::pair<clang::SourceLocation,
clang::PartialDiagnostic> >&) const: Assertion `!Init->isValueDependent()'
failed.
clang-4.0: error: unable to execute command: Aborted (core dumped)
clang-4.0: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 5.0.0 (trunk 292529)
Target: x86_64-unknown-linux-gnu
Thread model: posix
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