http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51046
Bug #: 51046
Summary: ICE by unexpanded template param pack in range-based
for
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: ai.az...@gmail.com
The following ill-formed code results in ICE.
cryolite@blueplanet:~/work/test$ LANG=C
/home/cryolite/local/4.7.0/bin/g++-tlimit -v -save-temps -std=c++0x main.cpp
Using built-in specs.
COLLECT_GCC=/home/cryolite/local/4.7.0/bin/g++
COLLECT_LTO_WRAPPER=/home/cryolite/local/4.7.0/libexec/gcc/x86_64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /home/cryolite/work/intro/gcc-4.7-20111105/configure
--build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu
--target=x86_64-unknown-linux-gnu --prefix=/home/cryolite/local/4.7.0
--enable-static --enable-shared --enable-multilib --enable-threads=posix
--enable-tls --with-arch-32=i686 --with-tune=generic --enable-bootstrap
--enable-languages=c,c++ --enable-libssp --enable-libgomp --enable-targets=all
--enable-nls --enable-lto --enable-libstdcxx-debug --disable-libstdcxx-pch
Thread model: posix
gcc version 4.7.0 20111105 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/home/cryolite/local/4.7.0/libexec/gcc/x86_64-unknown-linux-gnu/4.7.0/cc1plus
-E -quiet -v -D_GNU_SOURCE main.cpp -mtune=generic -march=x86-64 -std=c++11
-fpch-preprocess -o main.ii
ignoring nonexistent directory
"/home/cryolite/local/4.7.0/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/home/cryolite/local/4.7.0/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0
/home/cryolite/local/4.7.0/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/x86_64-unknown-linux-gnu
/home/cryolite/local/4.7.0/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/backward
/home/cryolite/local/4.7.0/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/include
/usr/local/include
/home/cryolite/local/4.7.0/include
/home/cryolite/local/4.7.0/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/include-fixed
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/home/cryolite/local/4.7.0/libexec/gcc/x86_64-unknown-linux-gnu/4.7.0/cc1plus
-fpreprocessed main.ii -quiet -dumpbase main.cpp -mtune=generic -march=x86-64
-auxbase main -std=c++11 -version -o main.s
GNU C++ (GCC) version 4.7.0 20111105 (experimental) (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.7.0 20111105 (experimental), GMP version 5.0.2,
MPFR version 3.0.0-p3, MPC version 0.9
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C++ (GCC) version 4.7.0 20111105 (experimental) (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.7.0 20111105 (experimental), GMP version 5.0.2,
MPFR version 3.0.0-p3, MPC version 0.9
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 1c96d36acbd98a4b9c0fb64069912a60
main.cpp: In instantiation of 'void f() [with int ...IS = {0, 1, 2}]':
main.cpp:9:14: required from here
main.cpp:4:3: internal compiler error: unexpected expression 'IS' of kind
template_parm_index
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
cryolite@blueplanet:~/work/test$ cat main.ii
# 1 "main.cpp"
# 1 "<command-line>"
# 1 "main.cpp"
template<int... IS>
void f()
{
for (int i : IS);
}
int main()
{
f<0, 1, 2>();
}
