New testcase: gdb.base/ctxobj.exp

gdb/testsuite/ChangeLog:

        * gdb.base/ctxobj-f.c, gdb.base/ctxobj-m.c, gdb.base/ctxobj-v.c,
        gdb.base/ctxobj.exp: New files.

gdb/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2012-05-10  Joel Brobecker  <brobecker@adacore.com>
+
+	* gdb.base/ctxobj-f.c, gdb.base/ctxobj-m.c, gdb.base/ctxobj-v.c,
+	gdb.base/ctxobj.exp: New files.
+
 2012-05-09  Tom Tromey  <tromey@redhat.com>
 
 	* gdb.trace/strace.exp: Add 'quiet' to compiler flags.

gdb/testsuite/gdb.base/ctxobj-f.c

@@ -0,0 +1,27 @@
+/* This testcase is part of GDB, the GNU debugger.
+   Copyright 2012 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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+extern int this_version_num;
+
+#ifndef GET_VERSION
+#error GET_VERSION macro is undefined
+#endif
+
+int
+GET_VERSION (void)
+{
+  return this_version_num;
+}

gdb/testsuite/gdb.base/ctxobj-m.c

@@ -0,0 +1,31 @@
+/* This testcase is part of GDB, the GNU debugger.
+   Copyright 2012 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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+extern int get_version_1 (void);
+extern int get_version_2 (void);
+
+int
+main (void)
+{
+  if (get_version_1 () != 104)
+    return 1;
+
+  if (get_version_2 () != 203)
+    return 2;
+
+  return 0;
+}
+

gdb/testsuite/gdb.base/ctxobj-v.c

@@ -0,0 +1,21 @@
+/* This testcase is part of GDB, the GNU debugger.
+   Copyright 2012 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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef VERSION
+#error VERSION macro is not defined.
+#endif
+
+int this_version_num = VERSION;

gdb/testsuite/gdb.base/ctxobj.exp

@@ -0,0 +1,94 @@
+# Copyright 2012 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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+set executable ctxobj-m
+
+# The sources used to build two shared libraries (SO).  We use the exact
+# same sources to build both SOs, but differentiate them through the use
+# of macros defined when calling the compiler.
+#
+# We need two source files per SO, because we need to test the situation
+# where we are trying to print the value of a global variable defined
+# in that SO while the variable's associated symtab has not been created
+# yet.
+set libsrc [list "${srcdir}/${subdir}/ctxobj-v.c" \
+                 "${srcdir}/${subdir}/ctxobj-f.c"]
+
+set libobj1 "${objdir}/${subdir}/libctxobj1.so"
+set libobj2 "${objdir}/${subdir}/libctxobj2.so"
+
+set libobj1_opts { debug additional_flags=-fPIC
+                   additional_flags=-DVERSION=104
+                   additional_flags=-DGET_VERSION=get_version_1 }
+set libobj2_opts { debug additional_flags=-fPIC
+                   additional_flags=-DVERSION=203
+                   additional_flags=-DGET_VERSION=get_version_2 }
+
+if { [gdb_compile_shlib $libsrc $libobj1 $libobj1_opts ] != "" } {
+    return -1
+}
+if { [gdb_compile_shlib $libsrc $libobj2 $libobj2_opts ] != "" } {
+    return -1
+}
+if { [gdb_compile "${srcdir}/${subdir}/${executable}.c" \
+                  "${objdir}/${subdir}/${executable}" \
+                  executable \
+                  [list debug shlib=${libobj1} shlib=${libobj2}]]
+     != ""} {
+    return -1
+}
+
+clean_restart $executable
+
+if ![runto_main] {
+    untested "could not run to main"
+    return -1
+}
+
+gdb_breakpoint "get_version_1"
+gdb_test "continue" \
+         "Breakpoint $decimal, get_version_1 \\(\\).*" \
+         "continue to get_version_1"
+
+# Try printing "this_version_num".  There are two global variables
+# with that name, but we should pick the one in the shared library
+# we are currently debugging.  We will know we picked the correct one
+# if the value printed is 104.  The first print test verifies that
+# we're doing things right when the partial symtab hasn't been
+# expanded.  And the second print test will do the same, but after
+# the partial symtab has been expanded.
+
+gdb_test "print this_version_num" \
+         " = 104" \
+        "print libctxobj1's this_version_num from partial symtab"
+
+gdb_test "print this_version_num" \
+         " = 104" \
+        "print libctxobj1's this_version_num from symtab"
+
+# Do the same, but from get_version_2.
+
+gdb_breakpoint "get_version_2"
+gdb_test "continue" \
+         "Breakpoint $decimal, get_version_2 \\(\\).*" \
+         "continue to get_version_2"
+
+gdb_test "print this_version_num" \
+         " = 203" \
+        "print libctxobj2's this_version_num from partial symtab"
+
+gdb_test "print this_version_num" \
+         " = 203" \
+        "print libctxobj2's this_version_num from symtab"