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From: "cas43 at cs dot stanford.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/54929] New: internal compiler error: in tsubst_copy, at cp/pt.c:12349
Date: Sun, 14 Oct 2012 23:50:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D54929

             Bug #: 54929
           Summary: internal compiler error: in tsubst_copy, at
                    cp/pt.c:12349
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: cas43@cs.stanford.edu


Input:

template<class T> class A {void F(){sizeof(double);}};
template class A<int>;


Expected result: compile successfully.

Output:

prog.cpp: In instantiation of =E2=80=98void A<T>::F() [with T =3D int]=E2=
=80=99:
prog.cpp:2:16:   required from here
prog.cpp:1:43: internal compiler error: in tsubst_copy, at cp/pt.c:12349
 template<class T> class A {void F(){sizeof(double);}};
                                           ^
0x5835ca tsubst_copy
    ../../s-4.8/gcc/cp/pt.c:12349
0x57364e tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, boo=
l,
bool)
    ../../s-4.8/gcc/cp/pt.c:13476
0x573543 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, boo=
l,
bool)
    ../../s-4.8/gcc/cp/pt.c:13501
0x57aeba tsubst_expr
    ../../s-4.8/gcc/cp/pt.c:13156
0x57c8c8 tsubst_expr
    ../../s-4.8/gcc/cp/pt.c:12641
0x57c465 tsubst_expr
    ../../s-4.8/gcc/cp/pt.c:12811
0x579d86 instantiate_decl(tree_node*, int, bool)
    ../../s-4.8/gcc/cp/pt.c:18633
0x5b43a3 instantiate_pending_templates(int)
    ../../s-4.8/gcc/cp/pt.c:18732
0x5efc00 cp_write_global_declarations()
    ../../s-4.8/gcc/cp/decl2.c:3993
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.


Output from g++ -v:
Using built-in specs.
COLLECT_GCC=3D/new-gcc/i-4.8/bin/g++
COLLECT_LTO_WRAPPER=3D/new-gcc/i-4.8/libexec/gcc/x86_64-unknown-linux-gnu/4=
.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../s-4.8/configure --prefix=3D/new-gcc/i-4.8
Thread model: posix
gcc version 4.8.0 20121014 (experimental) (GCC)=20


Sorry if this bugs gets duplicated; I cannot find the original.