http://llvm.org/bugs/show_bug.cgi?id=10815
Summary: clang could help more when calling pointer-to-member
function
Product: clang
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
This invalid program gives a diagnostic that could be better:
struct X { void foo(); };
void t() {
X x;
void (X::*y)() = &X::foo;
x.*y();
}
These member-pointer things are hard (though fortunately rare), so a good
compiler diagnostic would be really helpful. The error is:
x.cc:6:7: error: called object type 'void (X::*)()' is not a function or
function pointer
x.*y();
~^
while gcc gives me this:
x.cc: In function ‘void t()’:
x.cc:6: error: must use ‘.*’ or ‘->*’ to call pointer-to-member function in ‘y
(...)’, e.g. ‘(... ->* y) (...)’
which actually showed me that I needed to insert the parens. Nice.
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