https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89315
Bug ID: 89315
Summary: Cannot convert to std::initializer_list - fails with
gcc9 works with gcc8
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: larsbj at gullik dot net
Target Milestone: ---
Created attachment 45675
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45675&action=edit
Soruce that works with gcc8 fails with gcc9
The attached code compiles with:
g++ --version
g++ (GCC) 8.2.1 20181215 (Red Hat 8.2.1-6)
but fails with
/opt/gcc/gcc-9/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/opt/gcc/gcc-9/bin/g++
COLLECT_LTO_WRAPPER=/opt/gcc/gcc-9/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/opt/gcc/gcc-9
--enable-checking=release --enable-languages=c,c++
/opt/gcc/gcc-9/bin/g++ -c bug4.cpp
bug4.cpp: In instantiation of ‘void n< <template-parameter-1-1> >::m_fn1()
[with <template-parameter-1-1> = void]’:
bug4.cpp:17:22: required from here
bug4.cpp:13:24: error: cannot convert ‘const bar*’ to
‘std::initializer_list<int>’
13 | void m_fn1() { i{{}}; }
| ^
bug4.cpp:4:9: note: initializing argument 1 of
‘bar::bar(std::initializer_list<int>, int)’
4 | bar(std::initializer_list<int>, int = int());
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
