https://bugs.llvm.org/show_bug.cgi?id=38426
Bug ID: 38426
Summary: [OpenCL C++] Lambda/Functions broken in templates
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: OpenCL
Assignee: unassignedclangb...@nondot.org
Reporter: erich.ke...@intel.com
CC: llvm-bugs@lists.llvm.org
as you can see here:
https://godbolt.org/g/PnxFQJ
It appears that some of the OpenCL C++ implementation messes with the
qualifiers of function types, so this breaks. I believe the lambda issue has
to do with address-space modification, but I'm not sure yet.
void func();
template<typename Func>
void foo(Func F) {
F();
}
int main() {
foo(func);
foo([](){});
}
<source>:8:5: error: function cannot be called 'main'
int main() {
^
<source>:9:9: error: taking address of function is not allowed
foo(func);
^
<source>:5:5: error: no matching function for call to object of type '(lambda
at <source>:10:9)'
F();
^
<source>:10:5: note: in instantiation of function template specialization
'foo<(lambda at <source>:10:9)>' requested here
foo([](){});
^
<source>:10:9: note: candidate function not viable: address space mismatch in
'this' argument ('(lambda at <source>:10:9)'), parameter type must be 'const
(lambda at <source>:10:9)'
foo([](){});
^
<source>:10:9: note: conversion candidate of type 'void (*)()'
3 errors generated.
Compiler returned: 1
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