[Bug c++/59707] New: [4.8.2] Crash when using std::map with template class

[Bug c++/59707] New: [4.8.2] Crash when using std::map with template class

[martin.sandsmark at kde dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59707

            Bug ID: 59707
           Summary: [4.8.2] Crash when using std::map with template class
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: martin.sandsmark at kde dot org

Created attachment 31761
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31761&action=edit
Crashing source

Using built-in specs.
COLLECT_GCC=/usr/bin/gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/gcc-multilib/src/gcc-4.8-20131219/configure
--prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch
--disable-libssp --enable-gnu-unique-object --enable-linker-build-id
--enable-cloog-backend=isl --disable-cloog-version-check --enable-lto
--enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu
--enable-multilib --disable-werror --enable-checking=release
Thread model: posix


I'll just inline it here, just compile with "g++ filename.cpp" to crash:

#include <map>

struct T {
    template<class D> operator D*() const;
};

std::map<T, int> m;

void f(T x) {
    m[x];
}

[Bug c++/59707] Crash when using std::map with template class

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59707

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-invalid-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-01-07
            Version|unknown                     |4.8.2
            Summary|[4.8.2] Crash when using    |Crash when using std::map
                   |std::map with template      |with template class
                   |class                       |
     Ever confirmed|0                           |1
      Known to fail|                            |4.7.4, 4.8.2, 4.9.0

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reduced:

struct T {
    template<class D> operator D*() const;
};

void f(T x) {
    x < x;
}

4.6 didn't ICE but incorrectly compiled the code

[Bug c++/59707] [4.7/4.8/4.9 Regression] Crash when using std::map with template class

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59707

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org
   Target Milestone|---                         |4.7.4
            Summary|Crash when using std::map   |[4.7/4.8/4.9 Regression]
                   |with template class         |Crash when using std::map
                   |                            |with template class

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The ICE started with r183221.

[Bug c++/59707] [4.7/4.8/4.9 Regression] Crash when using std::map with template class

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59707

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |jason at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org

[Bug c++/59707] [4.7/4.8/4.9 Regression] Crash when using std::map with template class

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59707

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Jan 30 05:28:52 2014
New Revision: 207295

URL: http://gcc.gnu.org/viewcvs?rev=207295&root=gcc&view=rev
Log:
    PR c++/59707
    * call.c (add_builtin_candidate): Catch dependent types.

Added:
    trunk/gcc/testsuite/g++.dg/template/operator12.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c

[Bug c++/59707] [4.7/4.8 Regression] Crash when using std::map with template class

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59707

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.7.4                       |4.8.4

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
The 4.7 branch is being closed, moving target milestone to 4.8.4.

[Bug c++/59707] [4.8 Regression] Crash when using std::map with template class

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59707

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|4.8.4                       |4.9.0

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed in 4.9.  I'm reluctant to backport fixes for invalid-code bugs.