http://llvm.org/bugs/show_bug.cgi?id=19427
Bug ID: 19427
Summary: clang does not diagnose declaration of name inside
class scope
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Testcase:
namespace ns {
class Module { };
}
namespace ns {
class Module;
class Foo {
Module *Module;
};
}
Clang issues no error. GCC says:
a.cc:9:11: error: declaration of ‘ns::Module* ns::Foo::Module’ [-fpermissive]
Module *Module;
^
a.cc:2:9: error: changes meaning of ‘Module’ from ‘class ns::Module’
[-fpermissive]
class Module { };
^
GCC is correct. This is invalid per [basic.scope.class]/1 bullet 2. This is
NDR, but gcc diagnoses it, and it shouldn't be inefficient for us to do the
same (we need to do a name lookup on newly declared names anyways).
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