[Bug libstdc++/11696] New: building basic C++ application fails with -fmudflap

[Bug libstdc++/11696] New: building basic C++ application fails with -fmudflap

[phil dot el at wanadoo dot fr]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11696

           Summary: building basic C++ application fails with -fmudflap
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: phil dot el at wanadoo dot fr
                CC: fche at redhat dot com,gcc-bugs at gcc dot gnu dot org
  GCC host triplet: GNU/linux i386

probably a known problem since it's very simple and all c++
user should reach it.

#include <cstring>

$ g++ -fmudflap tmp.cpp

/usr/local/gcc-tree-ssa/include/c++/3.5-tree-ssa/cstring:79: error: `::memcpy'
   has not been declared
....

mudflap #define memcpy __mfwrap_memcpy, <cstring> include <string.h> then
#undef memcpy so compiler fail on a later using ::memcpy;

I've no idea if the problem must be consided in libstdc++ or in mf-runtime.h

regards,
Philippe Elie

[Bug libstdc++/11696] building basic C++ application fails with -fmudflap

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11696


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
   Target Milestone|3.4                         |tree-ssa

[Bug libstdc++/11696] building basic C++ application fails with -fmudflap

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11696


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   GCC host triplet|GNU/linux i386              |
 GCC target triplet|                            |i686-pc-linux-gnu

[Bug libstdc++/11696] building basic C++ application fails with -fmudflap

[fche at redhat dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11696


fche at redhat dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-07-28 20:37:23
               date|                            |


------- Additional Comments From fche at redhat dot com  2003-07-28 20:37 -------
Yes, the #undefs in some libstdc++ <c*> headers are a problem.
libmudflap needs to be able to rename an application's use of
these symbols (and not via linker renaming, since only instrumented
objects should be affected).  I don't know how best to work around
this.  Perhaps the libstdc++ headers could have #ifndef MUDFLAP
wrappers around the #undef's ...

[Bug libstdc++/11696] building basic C++ application fails with -fmudflap

[fche at redhat dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11696


fche at redhat dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |fche at redhat dot com
                   |dot org                     |
             Status|NEW                         |ASSIGNED

[Bug libstdc++/11696] building basic C++ application fails with -fmudflap

[fche at redhat dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11696



------- Additional Comments From fche at redhat dot com  2003-11-07 19:11 -------
I have a patch that activates the solaris pragma "redefine_extname"
for -fmudflap*.  Using this in the mf-runtime.h header appears to
make C++ work.

[Bug libstdc++/11696] [mudflap] building basic C++ application fails with -fmudflap

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2003-11-20 21:47 -------
RTH said the patch was fine if turned on the parma redefine_extname all the time, you commited 
with it only on when compiling with -fmudflap.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11696

[Bug libstdc++/11696] [mudflap] building basic C++ application fails with -fmudflap

[fche at redhat dot com]

------- Additional Comments From fche at redhat dot com  2003-11-20 21:52 -------
patch committed, including test case

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11696

[Bug libstdc++/11696] [mudflap] building basic C++ application fails with -fmudflap

[fche at redhat dot com]

------- Additional Comments From fche at redhat dot com  2003-11-20 21:54 -------
(Discussions are ongoing with rth about whether the pragma should be activated
all the time.)

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11696