http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46046
Summary: internal compiler error with SFINAE expression in a
template inside a template
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: g...@r9e.de
Created attachment 22061
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22061
Sample code to trigger the segfault
When compiling the given sample code g++ produces the following error message:
# g++ sample.cpp
sample.cpp: In function ‘int main()’:
sample.cpp:23:22: internal compiler error: tree check: expected tree_vec, have
error_mark in add_to_template_args, at cp/pt.c:496
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
I'm not absolutely sure if it is valid c++, but even if it is not, the compiler
should not produce this error
I have reproduced this with gcc 4.5.1 and trunk compiled on a Ubuntu 10.04
amd64 and configured using:
CFLAGS="-m64 -g -O2" ../gcc-trunk/configure --enable-languages=c,c++
--disable-multilib
gcc 4.5.1 did not print the error message above, but segfaulted:
# g++ sample.cpp
sample.cpp: In function ‘int main()’:
sample.cpp:23:22: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
The gcc 4.4.3 distributed by Ubuntu segfaulted, too, but I did not compile a
vanilla gcc 4.4.
