https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68586
Bug ID: 68586
Summary: [6 Regression] Enum template parameter wrongly
rejected
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: major
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
Target Milestone: ---
The following valid code snippet is wrongly rejected on trunk (6.0.0 20151122):
====================================
enum E { x = 1, y = x << 1 };
template<E> struct A {};
A<x> a;
====================================
bug.cc:5:4: error: invalid conversion from 'int' to 'E' [-fpermissive]
A<x> a;
^
During reduction from a larger testcase I had to tweak the settings
of the garbage collector (--param ggc-min-expand=0) to make it appear reliably.
