http://sourceware.org/ml/gdb-patches/2014-07/msg00709.html

Subject: [patch] Display Fortran strings in backtraces

Hi,

for Fortran it fixes displaying normal strings also in frames/backtraces:

(gdb) frame

#0  f (s=..., _s=3) at ./gdb.fortran/fortran-frame-string.f90:24

->

#0  f (s='foo', _s=3) at ./gdb.fortran/fortran-frame-string.f90:24

The patch is simple and I do not see why it should not be this way.

For C/C++ TYPE_CODE_STRING is not used.  I am not aware of Pascal but that

language is currently not really much supported in GDB anyway.

This was a part of my archer/jankratochvil/vla branch but it is not a part of

the Intel VLA patchset as it in fact is completely unrelated to "VLA".

No regressions on {x86_64,x86_64-m32,i686}-fedora22pre-linux-gnu.

Thanks,

Jan

diff --git a/gdb/testsuite/gdb.fortran/fortran-frame-string.exp b/gdb/testsuite/gdb.fortran/fortran-frame-string.exp

new file mode 100644

index 0000000..4b78266

--- /dev/null

+++ b/gdb/testsuite/gdb.fortran/fortran-frame-string.exp

@@ -0,0 +1,36 @@

+# Copyright 2014 Free Software Foundation, Inc.

+

+# This program is free software; you can redistribute it and/or modify

+# it under the terms of the GNU General Public License as published by

+# the Free Software Foundation; either version 2 of the License, or

+# (at your option) any later version.

+# 

+# This program is distributed in the hope that it will be useful,

+# but WITHOUT ANY WARRANTY; without even the implied warranty of

+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+# GNU General Public License for more details.

+# 

+# You should have received a copy of the GNU General Public License

+# along with this program; if not, write to the Free Software

+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  

+

+standard_testfile .f90

+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} {debug f90}] } {

+    return -1

+}

+

+if ![runto MAIN__] then {

+    perror "couldn't run to breakpoint MAIN__"

+    continue

+}

+

+gdb_breakpoint [gdb_get_line_number "s = s"]

+gdb_continue_to_breakpoint "s = s"

+

+gdb_test "ptype s" {type = character\*3}

+gdb_test "p s" " = 'foo'"

+

+# Fix rejected upstream:

+# https://sourceware.org/ml/gdb-patches/2014-07/msg00768.html

+setup_kfail "rejected" *-*-* 

+gdb_test "frame" { \(s='foo', .*}

diff --git a/gdb/testsuite/gdb.fortran/fortran-frame-string.f90 b/gdb/testsuite/gdb.fortran/fortran-frame-string.f90

new file mode 100644

index 0000000..3d1576f

--- /dev/null

+++ b/gdb/testsuite/gdb.fortran/fortran-frame-string.f90

@@ -0,0 +1,28 @@

+! Copyright 2014 Free Software Foundation, Inc.

+!

+! This program is free software; you can redistribute it and/or modify

+! it under the terms of the GNU General Public License as published by

+! the Free Software Foundation; either version 2 of the License, or

+! (at your option) any later version.

+!

+! This program is distributed in the hope that it will be useful,

+! but WITHOUT ANY WARRANTY; without even the implied warranty of

+! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+! GNU General Public License for more details.

+!

+! You should have received a copy of the GNU General Public License

+! along with this program; if not, write to the Free Software

+! Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

+!

+! Ihis file is the Fortran source file for dynamic.exp.

+! Original file written by Jakub Jelinek <jakub@redhat.com>.

+! Modified for the GDB testcase by Jan Kratochvil <jan.kratochvil@redhat.com>.

+

+  subroutine f(s)

+  character*3 s

+  s = s

+  end

+

+  program main

+  call f ('foo')

+  end