Public bug reported:
This error occurs when I try to compile this seven-line file.
#include <tuple>
template< class X > struct Hold {
X x;
constexpr Hold( X x ) : x(std::move(x)) { }
};
constexpr auto a = Hold<int>( 1 ); //ok
constexpr auto b = Hold<std::tuple<int>>( std::tuple<int>(1) ); // not
(See compiler output below.)
1) OS Release info:
Description: Ubuntu 12.10
Release: 12.10
2) Gcc version:
g++:
Installed: 4:4.7.2-1ubuntu2
Candidate: 4:4.7.2-1ubuntu2
Version table:
*** 4:4.7.2-1ubuntu2 0
500 http://us.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
100 /var/lib/dpkg/status
3) Expectation:
This will compile such that Hold.x is a tuple<int> that holds just 1. I
assume that std::tuple is movable and constexpr.
According to Ideone, GCC 4.5 rejects this, but does not crash.
http://ideone.com/17IXz2
4) Actual:
sandbox$ g++ -v -save-temps -std=c++11 test.cpp
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.7.2-4precise1' --with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs
--enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.7 --enable-shared --enable-linker-build-id
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.7
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object
--enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-4precise1)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/4.7/cc1plus -E -quiet -v -imultiarch
x86_64-linux-gnu -D_GNU_SOURCE test.cpp -mtune=generic -march=x86-64 -std=c++11
-fpch-preprocess -fstack-protector -o test.ii
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/4.7
/usr/include/c++/4.7/x86_64-linux-gnu
/usr/include/c++/4.7/backward
/usr/lib/gcc/x86_64-linux-gnu/4.7/include
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/4.7/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/4.7/cc1plus -fpreprocessed test.ii -quiet
-dumpbase test.cpp -mtune=generic -march=x86-64 -auxbase test -std=c++11
-version -fstack-protector -o test.s
GNU C++ (Ubuntu/Linaro 4.7.2-4precise1) version 4.7.2 (x86_64-linux-gnu)
compiled by GNU C version 4.7.2, GMP version 5.0.2, MPFR version
3.1.0-p3, MPC version 0.9
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++ (Ubuntu/Linaro 4.7.2-4precise1) version 4.7.2 (x86_64-linux-gnu)
compiled by GNU C version 4.7.2, GMP version 5.0.2, MPFR version
3.1.0-p3, MPC version 0.9
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: a1c501d12da152ca643ada9ec378ccab
test.cpp:8:62: in constexpr expansion of 'Hold<std::tuple<int>
>(std::tuple<int>((* &1)))'
test.cpp:5:40: in constexpr expansion of '((Hold<std::tuple<int>
>*)this)->Hold<std::tuple<int> >::x.std::tuple< <template-parameter-1-1>
>::tuple<{int}>((* & std::move<std::tuple<int>&>((* & x))))'
test.cpp:8:62: internal compiler error: in cxx_eval_indirect_ref, at
cp/semantics.c:7435
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.7/README.Bugs> for instructions.
Preprocessed source stored into /tmp/ccebWdLK.out file, please attach this to
your bugreport.
I have also produced this with gcc 4.8:
sandbox$ /usr/lib/gcc-snapshot/bin/g++ -v --save-temps -std=c++11 test.cpp
Using built-in specs.
COLLECT_GCC=/usr/lib/gcc-snapshot/bin/g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc-snapshot/libexec/gcc/x86_64-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
20121008-1ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-snapshot/README.Bugs
--enable-languages=c,ada,c++,java,go,fortran,objc,obj-c++
--prefix=/usr/lib/gcc-snapshot --enable-shared --enable-linker-build-id
--with-system-zlib --disable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object
--enable-plugin --disable-browser-plugin --enable-java-awt=gtk
--enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-snap/jre
--enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-snap
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-snap
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic
--enable-checking=yes --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.0 20121008 (experimental) [trunk revision 192192]
(Ubuntu/Linaro 20121008-1ubuntu1)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/lib/gcc-snapshot/libexec/gcc/x86_64-linux-gnu/4.8.0/cc1plus -E -quiet -v
-imultilib . -imultiarch x86_64-linux-gnu -D_GNU_SOURCE test.cpp -mtune=generic
-march=x86-64 -std=c++11 -fpch-preprocess -o test.ii
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.8.0/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.8.0/../../../../include/c++/4.8.0
/usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.8.0/../../../../include/c++/4.8.0/x86_64-linux-gnu/.
/usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.8.0/../../../../include/c++/4.8.0/backward
/usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.8.0/include
/usr/local/include
/usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.8.0/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/lib/gcc-snapshot/libexec/gcc/x86_64-linux-gnu/4.8.0/cc1plus
-fpreprocessed test.ii -quiet -dumpbase test.cpp -mtune=generic -march=x86-64
-auxbase test -std=c++11 -version -o test.s
GNU C++ (Ubuntu/Linaro 20121008-1ubuntu1) version 4.8.0 20121008 (experimental)
[trunk revision 192192] (x86_64-linux-gnu)
compiled by GNU C version 4.8.0 20121008 (experimental) [trunk revision
192192], GMP version 5.0.2, MPFR version 3.1.0-p3, MPC version 0.9
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C++ (Ubuntu/Linaro 20121008-1ubuntu1) version 4.8.0 20121008 (experimental)
[trunk revision 192192] (x86_64-linux-gnu)
compiled by GNU C version 4.8.0 20121008 (experimental) [trunk revision
192192], GMP version 5.0.2, MPFR version 3.1.0-p3, MPC version 0.9
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: be9316d4d24873f9eb2c1149d4699d98
test.cpp:8:62: in constexpr expansion of 'Hold<std::tuple<int>
>(std::tuple<int>((* &1)))'
test.cpp:5:40: in constexpr expansion of '((Hold<std::tuple<int>
>*)this)->Hold<std::tuple<int> >::x.std::tuple< <template-parameter-1-1>
>::tuple<{int}>((* & std::move<std::tuple<int>&>((* & x))))'
test.cpp:8:62: internal compiler error: in cxx_eval_indirect_ref, at
cp/semantics.c:7476
constexpr auto b = Hold<std::tuple<int>>( std::tuple<int>(1) ); // not
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-snapshot/README.Bugs> for instructions.
Preprocessed source stored into /tmp/ccGrrfHl.out file, please attach this to
your bugreport.
** Affects: gcc-4.7 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1087895
Title:
internal compiler error: in cxx_eval_indirect_ref, at
cp/semantics.c:7435
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