https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93394
Bug ID: 93394
Summary: Request for operator* is ambiguous when binary and
unary overloads are in different base classes
Product: gcc
Version: 9.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc at sjnewell dot com
Target Milestone: ---
Created attachment 47696
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47696&action=edit
Reduced test case
Test case is attached. gcc-9.2.0 and gcc-8.3.0 (installed on a gentoo system
via portage) both report an ambiguous call to operator*:
testcase.ii: In function ‘void f()’:
testcase.ii:10:18: error: request for member ‘operator*’ is ambiguous
10 | auto x = b * 10;
| ^~
testcase.ii:2:9: note: candidates are: ‘int T::operator*(int)’
2 | int operator*(int i) { return 0; }
| ^~~~~~~~
testcase.ii:5:9: note: ‘int A::operator*()’
5 | int operator*() { return 0; }
|
The error message is identical when testing with c++11, c++14, c++17, gnu++11,
gnu++14, and gnu++17. clang-9.0.1 compiles without error.
