https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79387
Bug ID: 79387
Summary: Internal compiler error in convert_nontype_argument
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc at harmberntsen dot nl
Target Milestone: ---
Target: avr
The following code causes an internal compiler error:
const char someData[] = {1, 2, 3};
template <const short addr> class A {
};
constexpr const short p = someData + 1;
A<p> a;
$ avr-g++ -fpermissive test.cpp
test.cpp:6:37: warning: invalid conversion from 'const char*' to 'short int'
[-fpermissive]
constexpr const short p = someData + 1;
~~~~~~~~~^~~
test.cpp:7:4: internal compiler error: in convert_nontype_argument, at
cp/pt.c:6398
A<p> a;
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
For reference, normal g++:
$ g++ -fpermissive test.cpp
test.cpp:6:37: warning: invalid conversion from ‘const char*’ to ‘short int’
[-fpermissive]
constexpr const short p = someData + 1;
~~~~~~~~~^~~
test.cpp:6:39: error: ‘(short int)(((const char*)(& someData)) + 1u)’ is not a
constant expression
constexpr const short p = someData + 1;
I am using Arch Linux with the following versions:
$ avr-g++ -v
Using built-in specs.
Reading specs from /usr/lib/gcc/avr/6.3.0/device-specs/specs-avr2
COLLECT_GCC=avr-g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/avr/6.3.0/lto-wrapper
Target: avr
Configured with: /build/avr-gcc/src/gcc-6-20161222/configure
--disable-install-libiberty --disable-libssp --disable-libstdcxx-pch
--disable-libunwind-exceptions --disable-linker-build-id --disable-nls
--disable-werror --disable-__cxa_atexit --enable-checking=release
--enable-clocale=gnu --enable-gnu-unique-object --enable-gold
--enable-languages=c,c++ --enable-ld=default --enable-lto --enable-plugin
--enable-shared --infodir=/usr/share/info --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --prefix=/usr --target=avr
--with-as=/usr/bin/avr-as --with-gnu-as --with-gnu-ld --with-ld=/usr/bin/avr-ld
--with-plugin-ld=ld.gold --with-system-zlib --with-isl
--enable-gnu-indirect-function
Thread model: single
gcc version 6.3.0 (GCC)
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/6.3.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --disable-multilib --disable-werror
--enable-checking=release
Thread model: posix
gcc version 6.3.1 20170109 (GCC)
