--- pstack-1.2.orig/pstack.c
+++ pstack-1.2/pstack.c
@@ -388,9 +388,15 @@
   int fd;
   Symbols syms;
 
+  if (*fname == '\0')
+    return (Symbols) 0;
   syms = newSyms(fname);
   if ((fd = open(fname, O_RDONLY)) < 0)
+  {
+    fprintf(stderr, "'%s': ", fname);
+    perror("opening object file");
     quit("Could not open object file.");
+  }
   read(fd, &hdr, sizeof(hdr));
   verify_ident(&hdr);
   if (!find_stables(&hdr, fd, syms)) {
@@ -599,9 +605,17 @@
   return cmd;
 }
 
+void usage(const char *argv0, const char *param)
+{
+	fprintf(stderr, "Invalid parameter '%s'.\n", param);
+	fprintf(stderr, "Usage: %s <pid> [one or more]\n", argv0);
+	exit(1);
+}
+
 int main(int argc, char **argv)
 {
   int i;
+  const char *argv0 = argv[0];
 
   /* Arrange to detach if we get an unexpected signal.  This prevents
      threads from being left in a suspended state if (for example) we
@@ -612,15 +626,17 @@
       signal (i, handle_signal);
 
   for (argc--, argv++; argc > 0; argc--, argv++) {
-    thePid = atoi(*argv);
+    char *endptr = NULL;
+    thePid = strtol(*argv, &endptr, 0);
+    if (!*argv || *endptr || errno==ERANGE)
+	    usage(argv0, *argv);
     if (!thePid || thePid == getpid()) {
       fprintf(stderr, "Invalid PID %d\n", thePid);
       continue;
     }
 
     if (attach(thePid) != 0) {
-      thePid = 0;
-      fprintf(stderr, "Could not attach to target.\n");
+      fprintf(stderr, "Could not attach to target %d\n", thePid);
     } else {
       printf("\n%d: %s\n", thePid, cmdLine(thePid));
       loadSymbols(thePid);
--- pstack-1.2.orig/debian/changelog
+++ pstack-1.2/debian/changelog
@@ -0,0 +1,20 @@
+pstack (1.2-2) unstable; urgency=low
+
+  * New maintainer. (Closes: #568574)
+  * Fix "fails to open object file" error. (Closes: #360922)
+  * debian/control
+    - Remove reference to upstream repository from package description
+    - Bump Standard-Version from 3.6.1 to 3.8.4 (no changes needed).
+    - Set Vcs-Browser and Vcs-Git fields.
+  * debian/compat
+    - Bump debhelper compatibility from 4 to 7 (no changes needed).
+
+ -- Thomas Preud'homme <robotux@celest.fr>  Tue, 10 Aug 2010 01:05:59 +0200
+
+pstack (1.2-1) unstable; urgency=low
+
+  * Initial Release. (Closes: #149048)
+  * Added better handling of command line parameters.
+
+ -- Baruch Even <baruch@debian.org>  Fri,  8 Oct 2004 17:13:40 +0100
+
--- pstack-1.2.orig/debian/watch
+++ pstack-1.2/debian/watch
@@ -0,0 +1,2 @@
+version=2
+http://download.fedora.redhat.com/pub/fedora/linux/core/development/SRPMS/ pstack-([\d.]+)-[\d.]+\.src.rpm	debian	uupdate
--- pstack-1.2.orig/debian/compat
+++ pstack-1.2/debian/compat
@@ -0,0 +1 @@
+7
--- pstack-1.2.orig/debian/rules
+++ pstack-1.2/debian/rules
@@ -0,0 +1,9 @@
+#!/usr/bin/make -f
+include /usr/share/cdbs/1/rules/debhelper.mk
+include /usr/share/cdbs/1/class/makefile.mk
+
+DEB_INSTALL_DOCS_ALL:=README
+DEB_MAKE_INSTALL_TARGET:=install
+export DESTDIR:=`pwd`/debian/pstack
+export BINDIR:=$(DESTDIR)/usr/bin
+export MANDIR:=$(DESTDIR)/usr/share/man
--- pstack-1.2.orig/debian/copyright
+++ pstack-1.2/debian/copyright
@@ -0,0 +1,14 @@
+This package was debianized by Baruch Even <baruch@debian.org> on
+Fri,  8 Oct 2004 17:13:40 +0100.
+
+It was downloaded from http://download.fedora.redhat.com/pub/fedora/linux/core/development/SRPMS/pstack-1.2-4.src.rpm
+Upstream homepage should be at: http://www.whatsis.com/pstack/
+
+Copyright: Ross Thompson <ross@whatsis.com> and RedHat
+
+Upstream Author: Ross Thompson <ross@whatsis.com>
+
+License:
+
+This program is released under the GNU GPL v2 or later, you may find the
+license at: /usr/share/common-licenses/GPL-2
--- pstack-1.2.orig/debian/control
+++ pstack-1.2/debian/control
@@ -0,0 +1,16 @@
+Source: pstack
+Section: devel
+Priority: optional
+Maintainer: Thomas Preud'homme <robotux@celest.fr>
+Build-Depends: debhelper (>= 7.0.0), cdbs
+Standards-Version: 3.9.1
+Vcs-Browser: http://git.debian.org/?p=collab-maint/pstack.git;a=summary
+Vcs-Git: git://git.debian.org/collab-maint/pstack.git
+
+Package: pstack
+Architecture: i386
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Description: Display stack trace of a running process
+ pstack dumps a stack trace for a process, given the pid of that process.  If
+ the process named is part of a thread group, then all the threads in the group
+ are traced.