[Bug c++/54122] gcc segfault comparing enum class in lambda inside constructor of a templated class

[giel.de.nijs at actian dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54122

--- Comment #2 from Giel de Nijs <giel.de.nijs at actian dot com> 2013-01-30 20:05:52 UTC ---
Created attachment 29310
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29310
Another reproduction

Minimal test case based on actual code that's compiling correctly with both gcc
4.6.3 as well as Visual Studio.



$ /opt/gcc-4.8/bin/g++ -v -save-temps -std=c++11 foo.cpp 
Using built-in specs.
COLLECT_GCC=/opt/gcc-4.8/bin/g++
COLLECT_LTO_WRAPPER=/opt/gcc-4.8/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ./configure --prefix=/opt/gcc-4.8
Thread model: posix
gcc version 4.8.0 20130127 (experimental) (GCC) 
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
 /opt/gcc-4.8/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/cc1plus -E -quiet -v
-D_GNU_SOURCE foo.cpp -mtune=generic -march=x86-64 -std=c++11 -fpch-preprocess
-o foo.ii
ignoring nonexistent directory
"/opt/gcc-4.8/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:

/opt/gcc-4.8/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../include/c++/4.8.0

/opt/gcc-4.8/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../include/c++/4.8.0/x86_64-unknown-linux-gnu

/opt/gcc-4.8/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../include/c++/4.8.0/backward
 /opt/gcc-4.8/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/include
 /usr/local/include
 /opt/gcc-4.8/include
 /opt/gcc-4.8/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/include-fixed
 /usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
 /opt/gcc-4.8/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/cc1plus -fpreprocessed
foo.ii -quiet -dumpbase foo.cpp -mtune=generic -march=x86-64 -auxbase foo
-std=c++11 -version -o foo.s
GNU C++ (GCC) version 4.8.0 20130127 (experimental) (x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.8.0 20130127 (experimental), GMP version 5.0.2,
MPFR version 3.1.0, MPC version 0.9
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C++ (GCC) version 4.8.0 20130127 (experimental) (x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.8.0 20130127 (experimental), GMP version 5.0.2,
MPFR version 3.1.0, MPC version 0.9
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: e8e88d7616898e4a81392bc45bc1dc95
foo.cpp: In lambda function:
foo.cpp:15:12: internal compiler error: Segmentation fault
    if(e == enum_0)
            ^
0xa7db9f crash_signal
    ../.././gcc/toplev.c:332
0x692c80 lvalue_kind(tree_node const*)
    ../.././gcc/cp/tree.c:146
0x6932a0 lvalue_kind(tree_node const*)
    ../.././gcc/cp/tree.c:101
0x693808 lvalue_p(tree_node const*)
    ../.././gcc/cp/tree.c:267
0x4fd710 standard_conversion
    ../.././gcc/cp/call.c:1102
0x503cf3 implicit_conversion
    ../.././gcc/cp/call.c:1694
0x5075d3 build_builtin_candidate
    ../.././gcc/cp/call.c:2151
0x508b60 add_builtin_candidates
    ../.././gcc/cp/call.c:2818
0x513e3b build_new_op_1
    ../.././gcc/cp/call.c:5177
0x514c57 build_new_op(unsigned int, tree_code, int, tree_node*, tree_node*,
tree_node*, tree_node**, int)
    ../.././gcc/cp/call.c:5444
0x626962 build_x_binary_op(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node**, int)
    ../.././gcc/cp/typeck.c:3686
0x606b15 cp_parser_binary_expression
    ../.././gcc/cp/parser.c:7476
0x606e45 cp_parser_assignment_expression
    ../.././gcc/cp/parser.c:7584
0x608c42 cp_parser_expression
    ../.././gcc/cp/parser.c:7735
0x617a32 cp_parser_condition
    ../.././gcc/cp/parser.c:9410
0x5ff4c2 cp_parser_selection_statement
    ../.././gcc/cp/parser.c:9187
0x5ff4c2 cp_parser_statement
    ../.././gcc/cp/parser.c:8756
0x60067e cp_parser_statement_seq_opt
    ../.././gcc/cp/parser.c:9133
0x601bb5 cp_parser_lambda_body
    ../.././gcc/cp/parser.c:8647
0x601bb5 cp_parser_lambda_expression
    ../.././gcc/cp/parser.c:8188
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.