Hi
While working on hashtable I have added this kind of expression to
decide to cache or not hash code:
template<class _Value,
class _Hash = hash<_Value>,
class _Pred = std::equal_to<_Value>,
class _Alloc = std::allocator<_Value>,
bool __cache_hash_code =
__not_<__and_<is_integral<_Value>,
integral_constant<bool,
noexcept(declval<const _Hash&>()(declval<const
_Value&>()))>>
>::value>
class __unordered_set
In normal mode it works fine however in debug mode it generates an ICE:
Executing on host: /home/fdt/dev/gcc-trunk-build/./gcc/g++
-shared-libgcc -B/home/fdt/dev/gcc-trunk-build/./gcc -nostdinc++
-L/home/fdt/dev/gcc-trunk-build/x86_64-unknown-linux-gnu/libstdc++-v3/src -L/home/fdt/dev/gcc-trunk-build/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/usr/local/x86_64-unknown-linux-gnu/bin/
-B/usr/local/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/local/x86_64-unknown-linux-gnu/include -isystem
/usr/local/x86_64-unknown-linux-gnu/sys-include
-B/home/fdt/dev/gcc-trunk-build/x86_64-unknown-linux-gnu/./libstdc++-v3/src/.libs
-g -O2 -D_GLIBCXX_ASSERT -fmessage-length=0 -ffunction-sections
-fdata-sections -g -O2 -D_GNU_SOURCE -DLOCALEDIR="." -nostdinc++
-I/home/fdt/dev/gcc-trunk-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu
-I/home/fdt/dev/gcc-trunk-build/x86_64-unknown-linux-gnu/libstdc++-v3/include
-I/home/fdt/dev/gcc-trunk/libstdc++-v3/libsupc++
-I/home/fdt/dev/gcc-trunk/libstdc++-v3/include/backward
-I/home/fdt/dev/gcc-trunk/libstdc++-v3/testsuite/util
/home/fdt/dev/gcc-trunk/libstdc++-v3/testsuite/23_containers/unordered_multiset/erase/1.cc
-std=gnu++0x ./libtestc++.a -Wl,--gc-sections -lm -D_GLIBCXX_DEBUG -o
./1.exe (timeout = 600)
In file included from
/home/fdt/dev/gcc-trunk-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/unordered_set:46:0,
from
/home/fdt/dev/gcc-trunk/libstdc++-v3/testsuite/23_containers/unordered_multiset/erase/1.cc:22:
/home/fdt/dev/gcc-trunk-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/bits/unordered_set.h:282:58:
internal compiler error: tree check: accessed elt 6 of tree_vec with 5
elts in tsubst, at cp/pt.c:11144
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
compiler exited with status 1
I know that 4.7 is going to be released soon so I prefer to report it
quickly. I should be able to submit a complete patch for hashtable
generating this ICE if the error message is not enough.
François
