Re: RFC: find core dumps on Linux

[Elena Zannoni <ezannoni at redhat dot com>]

Jim Blandy writes:
 > 
 > I didn't realize this, but for a very long time, gdb.base/coredump.exp
 > has been broken on Linux.  Linux creates core files named 'core.PID';
 > the test suite didn't know how to find them, so it suggested you check
 > your 'ulimit -c' setting and skipped the tests.


I think this is ok, and useful. Should go on the branch as well.

elena


 > 
 > 2003-05-22  Jim Blandy  <jimb@redhat.com>
 > 
 > 	* gdb.base/corefile.exp: Find corefiles on Linux, which names them
 > 	'core.PID'.
 > 
 > Index: gdb/testsuite/gdb.base/corefile.exp
 > ===================================================================
 > RCS file: /cvs/src/src/gdb/testsuite/gdb.base/corefile.exp,v
 > retrieving revision 1.5
 > diff -c -r1.5 corefile.exp
 > *** gdb/testsuite/gdb.base/corefile.exp	17 Dec 2001 21:03:48 -0000	1.5
 > --- gdb/testsuite/gdb.base/corefile.exp	22 May 2003 22:22:43 -0000
 > ***************
 > *** 54,69 ****
 >   # allows us to generate a core on systems where it does.
 >   #
 >   # Some systems append "core" to the name of the program; others append
 > ! # the name of the program to "core".
 >   set found 0
 > ! catch "system \"(cd ${objdir}/${subdir}; ulimit -c unlimited; ${binfile}; true) >/dev/null 2>&1\""
 >   #      remote_exec host "${binfile}"
 > ! foreach i "${objdir}/${subdir}/core ${objdir}/${subdir}/core.coremaker.c ${binfile}.core" {
 >       if [remote_file build exists $i] {
 >   	remote_exec build "mv $i ${objdir}/${subdir}/corefile"
 >   	set found 1
 >       }
 >   }
 >   if { $found == 0 } {
 >       # The braindamaged HPUX shell quits after the ulimit -c above
 >       # without executing ${binfile}.  So we try again without the
 > --- 54,83 ----
 >   # allows us to generate a core on systems where it does.
 >   #
 >   # Some systems append "core" to the name of the program; others append
 > ! # the name of the program to "core"; still others (like Linux, as of
 > ! # May 2003) create cores named "core.PID".  In the latter case, we
 > ! # could have many core files lying around, and it may be difficult to
 > ! # tell which one is ours, so let's run the program in a subdirectory.
 >   set found 0
 > ! set coredir "${objdir}/${subdir}/coredir.[getpid]"
 > ! file mkdir $coredir
 > ! catch "system \"(cd ${coredir}; ulimit -c unlimited; ${binfile}; true) >/dev/null 2>&1\""
 >   #      remote_exec host "${binfile}"
 > ! foreach i "${coredir}/core ${coredir}/core.coremaker.c ${binfile}.core" {
 >       if [remote_file build exists $i] {
 >   	remote_exec build "mv $i ${objdir}/${subdir}/corefile"
 >   	set found 1
 >       }
 >   }
 > + # Check for "core.PID".
 > + if { $found == 0 } {
 > +     set names [glob -nocomplain -directory $coredir core.*]
 > +     if {[llength $names] == 1} {
 > +         set corefile [file join $coredir [lindex $names 0]]
 > +         remote_exec build "mv $corefile ${objdir}/${subdir}/corefile"
 > +         set found 1
 > +     }
 > + }
 >   if { $found == 0 } {
 >       # The braindamaged HPUX shell quits after the ulimit -c above
 >       # without executing ${binfile}.  So we try again without the
 > ***************
 > *** 77,87 ****
 >   	    set found 1
 >   	}
 >       }
 >       
 > !     if { $found == 0  } {
 > ! 	warning "can't generate a core file - core tests suppressed - check ulimit -c"
 > ! 	return 0
 > !     }
 >   }
 >   
 >   #
 > --- 91,105 ----
 >   	    set found 1
 >   	}
 >       }
 > + }
 > + 
 > + # Try to clean up after ourselves. 
 > + remote_file build delete [file join $coredir coremmap.data]
 > + remote_exec build "rmdir $coredir"
 >       
 > ! if { $found == 0  } {
 > !     warning "can't generate a core file - core tests suppressed - check ulimit -c"
 > !     return 0
 >   }
 >   
 >   #