https://llvm.org/bugs/show_bug.cgi?id=25357
Bug ID: 25357
Summary: Subscript operator applied to an temporary array
results in an lvalue
Product: clang
Version: 3.7
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: C++14
Assignee: unassignedclangb...@nondot.org
Reporter: yaghmour.sha...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
This Stackoverflow question
http://stackoverflow.com/questions/33161003/using-a-temporary-array-as-an-lvalue
provides the following code:
using Y = int[10];
int main() {
(Y { })[0] = 1;
}
which compiles without diagnostic, if I am reading CWG defect report 1213
correctly http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1213
then the result of the subscript operator should be an xvalue and therefore
not assignable to. Is this a correct interpretation?
The clang defect report status page does list the status of DR 1213 as unknown
http://clang.llvm.org/cxx_dr_status.html but since this has come up on a couple
of SO questions already I thought it was worth it to file a bug report.
I have a Wandbox example here
http://melpon.org/wandbox/permlink/tiLfQnvsvBsAtNZv
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