[Bug c++/24602] New: g++: Internal error: Illegal instruction (program cc1plus)

[Bug c++/24602] New: g++: Internal error: Illegal instruction (program cc1plus)

[xeon at gmx dot ch]

I stumbled over a possible bug in g++ (at least it told me to file a bug
report). I'm not exactly sure if the code I tried to compile is correct.

~/bug > g++ -v -save-temps -I/usr/local/include gpp_bug.cpp
Using built-in specs.
Configured with: FreeBSD/i386 system compiler
Thread model: posix
gcc version 3.4.2 [FreeBSD] 20040728
 /usr/libexec/cc1plus -E -quiet -v -I/usr/local/include -D_LONGLONG gpp_bug.cpp
-o gpp_bug.ii
ignoring duplicate directory "/usr/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /usr/include/c++/3.4
 /usr/include/c++/3.4/backward
 /usr/include
End of search list.
 /usr/libexec/cc1plus -fpreprocessed gpp_bug.ii -quiet -dumpbase gpp_bug.cpp
-auxbase gpp_bug -version -o gpp_bug.s
GNU C++ version 3.4.2 [FreeBSD] 20040728 (i386-fbsdproj-freebsd)
        compiled by GNU C version 3.4.2 [FreeBSD] 20040728.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
g++: Internal error: Illegal instruction (program cc1plus)
Please submit a full bug report.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: g++: Internal error: Illegal instruction (program
                    cc1plus)
           Product: gcc
           Version: 3.4.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: xeon at gmx dot ch
  GCC host triplet: i686-freebsd 5.4-p7


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[xeon at gmx dot ch]

------- Comment #1 from xeon at gmx dot ch  2005-10-31 23:46 -------
Created an attachment (id=10092)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10092&action=view)
preprocessed source file


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2005-11-01 00:33 -------
This is a true C++ front-end problem, in that the seg fault is due to a stack
overflow in the C++ front-end.  I think this is a regression but I have not
tried to reduce it yet.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2005-11-01 02:22 -------
With the source here, I was able to find a different issue which I will be
posting soon.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2005-11-01 02:23 -------
Note the backtrace for the orginal issue is:
#28 0x000000000040bb94 in convert_like_real (convs=Variable "convs" is not
available.
) at /home/pinskia/src/newtest/trunk/gcc/cp/call.c:4379
#29 0x000000000040c241 in build_over_call (cand=0x15009b8, flags=1067) at
/home/pinskia/src/newtest/trunk/gcc/cp/call.c:4804
#30 0x000000000040aacd in build_new_method_call (instance=0x2aaaadbb4a40,
fns=Variable "fns" is not available.
) at /home/pinskia/src/newtest/trunk/gcc/cp/call.c:5441
#31 0x000000000040b5fa in convert_like_real (convs=0x15006e8,
expr=0x2aaaabf002c0, fn=0x2aaaabacd100, argnum=0, inner=-1,
issue_conversion_warnings=0 '\0', 
    c_cast_p=0 '\0') at /home/pinskia/src/newtest/trunk/gcc/cp/call.c:4293
#32 0x000000000040b71e in convert_like_real (convs=0x1500710,
expr=0x2aaaabf002c0, fn=0x2aaaabacd100, argnum=0, inner=0,
issue_conversion_warnings=1 '\001', 
    c_cast_p=0 '\0') at /home/pinskia/src/newtest/trunk/gcc/cp/call.c:4304
#33 0x000000000040c241 in build_over_call (cand=0x1500738, flags=3) at
/home/pinskia/src/newtest/trunk/gcc/cp/call.c:4804
#34 0x000000000040aacd in build_new_method_call (instance=0x2aaaadbb49c0,
fns=Variable "fns" is not available.
) at /home/pinskia/src/newtest/trunk/gcc/cp/call.c:5441
#35 0x00000000004b5c9f in ocp_convert (type=0x2aaaabab5420,
expr=0x2aaaabf002c0, convtype=Variable "convtype" is not available.
) at /home/pinskia/src/newtest/trunk/gcc/cp/cvt.c:764
#


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2005-11-01 03:09 -------
PR 24606 is the other issue I found.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |24606


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[pinskia at gcc dot gnu dot org]

------- Comment #6 from pinskia at gcc dot gnu dot org  2005-11-01 04:36 -------
Reduced testcase:
struct string;
struct _Deque_iterator     {
     string &operator*() const;
};
template<typename _Function>     void for_each(_Function __f)     {
  _Deque_iterator __first1;
  __f(*__first1);
}
struct locale   {
  locale(const locale& __other) throw();
};
template<typename SequenceT>
void trim(string& Input, const locale& Loc=locale());
int main() {
  for_each(trim<string>);
}
----

This one also ICEs with ICC.  I will let someone else decide if this is valid
or invalid code and then confirm it.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
      Known to fail|                            |2.95.3 3.3.3 3.4.0 4.0.0
                   |                            |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[reichelt at gcc dot gnu dot org]

------- Comment #7 from reichelt at gcc dot gnu dot org  2005-11-17 11:59 -------
Here's a sightly simpler testcase.
If I remove the copy-ctor from A, I get the failure from PR24606.

=========================================
template<typename F> void foo(F f)
{
    f();
}

struct A
{
    A();
    A(const A&);
};

template<int> void bar(A = A());

void baz()
{
    foo(bar<0>);
}
=========================================

Btw, removing the template from "bar" makes the code compile.
So it seems like the code is valid after all.


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |reichelt at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |ice-on-valid-code, monitored
   Last reconfirmed|0000-00-00 00:00:00         |2005-11-17 11:59:15
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[reichelt at gcc dot gnu dot org]

------- Comment #8 from reichelt at gcc dot gnu dot org  2007-07-23 22:05 -------
Since Nathan's patch for PR32839, we get the following error message for the
testcase in comment #7 (and similar messages for the original testcase, the
testcase in comment #6, and PR 24606):

bug.cc: In function 'void foo(F) [with F = void (*)(A)]':
bug.cc:16:   instantiated from here
bug.cc:3: error: too few arguments to function

I get the same error message if I make bar a non-template function.
In contrast to my last sentence of comment #7, I now think the compiler
does the right thing here.

Nathan, do you think so, too?
If yes, we can close this bug as fixed.


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nathan at gcc dot gnu dot
                   |                            |org
           Keywords|ice-on-valid-code           |ice-on-invalid-code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[reichelt at gcc dot gnu dot org]

------- Comment #9 from reichelt at gcc dot gnu dot org  2007-07-23 22:08 -------
*** Bug 24606 has been marked as a duplicate of this bug. ***


-- 
Bug 24602 depends on bug 24606, which changed state.

Bug 24606 Summary: ICE on template function which gets an template agrument as a function with a default argument
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24606

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[reichelt at gcc dot gnu dot org]

------- Comment #10 from reichelt at gcc dot gnu dot org  2007-11-01 12:52 -------
Nathan confirmed in private mail that the compiler now does the right thing.
So closing as fixed.


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602

[Bug c++/24602] g++: Internal error: Illegal instruction (program cc1plus)

[reichelt at gcc dot gnu dot org]

------- Comment #11 from reichelt at gcc dot gnu dot org  2008-03-29 17:32 -------
*** Bug 35596 has been marked as a duplicate of this bug. ***


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kevin at kelphead dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24602