[PATCH RFA] New testsuite test: step-line.exp

[Kevin Buettner <kevinb at cygnus dot com>]

The new test below was motivated by Ed Peschko's comments regarding
the behavior of gdb when debugging code with #line directives:

    http://sources.redhat.com/ml/gdb/2001-03/msg00081.html

I was able to reproduce the problems that Ed was seeing, but none
of GDB's current testsuite tests expose this problem.  Therefore,
a new test is needed...

This test will cause 12 new FAILs when run against a current GDB.
These 12 FAILs go away when my symtab.c patch is applied.  See:

    http://sources.redhat.com/ml/gdb/2001-03/msg00083.html

Now that I've written a test which demonstrates the problem, I'll
forward the above mentioned symtab.c patch to the gdb-patches list for
approval.

Okay to commit?

	* gdb.base/Makefile.in (EXECUTABLES): Add step-line.
	* gdb.base/step-line.c: New file.
	* gdb.base/step-line.exp: New file.
	* gdb.base/step-line.inp: New file.

Index: gdb.base/Makefile.in
===================================================================
RCS file: /cvs/src/src/gdb/testsuite/gdb.base/Makefile.in,v
retrieving revision 1.1.1.5
diff -u -r1.1.1.5 Makefile.in
--- Makefile.in	1999/08/02 23:46:47	1.1.1.5
+++ Makefile.in	2001/03/13 05:55:28
@@ -10,7 +10,8 @@
 	pointers pointers2 printcmds ptype \
 	recurse reread reread1 restore return run \
 	scope section_command setshow setvar shmain sigall signals \
-	solib solib_sl so-impl-ld so-indr-cl step-test structs structs2 \
+	solib solib_sl so-impl-ld so-indr-cl \
+	step-line step-test structs structs2 \
 	twice-tmp varargs vforked-prog watchpoint whatis
 
 MISCELLANEOUS = coremmap.data ../foobar.baz \
Index: gdb.base/step-line.c
===================================================================
RCS file: step-line.c
diff -N step-line.c
--- /dev/null	Tue May  5 13:32:27 1998
+++ step-line.c	Mon Mar 12 21:55:28 2001
@@ -0,0 +1,84 @@
+/* Test step/next in presence of #line directives.
+   Copyright 2001
+   Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   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.  */
+
+void dummy (int, int);
+int f1 (int);
+int f2 (int);
+
+int
+main (int argc, char **argv)
+{
+  int i;
+  i = f1 (4);
+  i = f1 (i);
+  dummy (0, i);
+  return 0;
+}
+
+int
+f1 (int i)
+{
+#line 40 "step-line.c"
+  dummy (1, i);
+#line 24 "step-line.inp"
+  i = f2 (i);
+#line 44 "step-line.c"
+  dummy (2, i);
+#line 25 "step-line.inp"
+  i = f2 (i);
+#line 48 "step-line.c"
+  dummy (3, i);
+#line 26 "step-line.inp"
+  return i;
+#line 52 "step-line.c"
+}
+
+int
+f2 (int i)
+{
+#line 31 "step-line.inp"
+  int j;
+#line 60 "step-line.c"
+  dummy (4, i);
+#line 32 "step-line.inp"
+  j = i;
+#line 64 "step-line.c"
+  dummy (5, i);
+  dummy (6, j);
+#line 33 "step-line.inp"
+  j = j + 1;
+#line 69 "step-line.c"
+  dummy (7, i);
+  dummy (8, j);
+#line 34 "step-line.inp"
+  j = j - i;
+#line 74 "step-line.c"
+  dummy (9, i);
+  dummy (10, j);
+#line 35 "step-line.inp"
+  return i;
+#line 79 "step-line.c"
+}
+
+void
+dummy (int num, int i)
+{
+}
Index: gdb.base/step-line.exp
===================================================================
RCS file: step-line.exp
diff -N step-line.exp
--- /dev/null	Tue May  5 13:32:27 1998
+++ step-line.exp	Mon Mar 12 21:55:28 2001
@@ -0,0 +1,95 @@
+# Copyright 2001 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.  */
+
+# Please email any bugs, comments, and/or additions to this file to:
+# bug-gdb@prep.ai.mit.edu
+# use this to debug:
+#
+#log_user 1
+
+# step-line.exp -- Expect script to test stepping in files in with
+# #line directives.
+
+if $tracelevel then {
+    strace $tracelevel
+}
+
+set testfile step-line
+set srcfile ${srcdir}/${subdir}/${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+
+remote_exec build "rm -f ${binfile}"
+if { [gdb_compile "${srcfile}" "${binfile}" executable {debug}] != "" } {
+     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
+}
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load ${binfile}
+
+if ![runto_main] then {
+   fail "Can't run to main"
+   return 0
+}
+
+gdb_test "break f1" ".*Breakpoint 2 at .* file step-line.c.*" "break f1"
+gdb_test "continue" \
+         "Continuing.*Breakpoint 2, f1 \\(i=4\\).*dummy \\(1, i\\);" \
+	 "continue to f1"
+gdb_test "next" \
+         ".*i = f2 \\(i\\);.*" \
+	 "next over dummy 1"
+gdb_test "next" \
+         ".*dummy \\(2, i\\);.*" \
+	 "next to dummy 2"
+gdb_test "next" \
+         ".*i = f2 \\(i\\);.*" \
+	 "next over dummy 2"
+gdb_test "step" \
+         ".*f2 \\(i=4\\).*dummy \\(4, i\\);.*" \
+	 "step into f2"
+gdb_test "next" \
+         ".*j = i;.*" \
+	 "next over dummy 4"
+gdb_test "next" \
+         ".*dummy \\(5, i\\);.*" \
+	 "next to dummy 5"
+gdb_test "next" \
+         ".*dummy \\(6, j\\);.*" \
+	 "next to dummy 6"
+gdb_test "next" \
+         ".*j = SUCC \\(j\\);.*" \
+	 "next over dummy 6"
+gdb_test "next" \
+         ".*dummy \\(7, i\\);.*" \
+	 "next to dummy 7"
+gdb_test "next" \
+         ".*dummy \\(8, j\\);.*" \
+	 "next to dummy 8"
+gdb_test "next" \
+         ".*j = j - i;.*" \
+	 "next over dummy 8"
+gdb_test "next" \
+         ".*dummy \\(9, i\\);.*" \
+	 "next to dummy 9"
+gdb_test "next" \
+         ".*dummy \\(10, j\\);.*" \
+	 "next to dummy 10"
+gdb_test "next" \
+         ".*RETURN \\(j\\);.*" \
+	 "next over dummy 10"
+return 0
Index: gdb.base/step-line.inp
===================================================================
RCS file: step-line.inp
diff -N step-line.inp
--- /dev/null	Tue May  5 13:32:27 1998
+++ step-line.inp	Mon Mar 12 21:55:28 2001
@@ -0,0 +1,41 @@
+# Test step/next in presence of #line directives
+# Copyright 2001
+# 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.  */
+
+# We pretend that this file has been transformed by some other tool
+# into step-line.c.
+
+FUNCTION f1 (i : INTEGER);
+  BEGIN
+    i = f2 (i);
+    i = f2 (i);
+    RETURN (i);
+  END
+
+FUNCTION f2 (i : INTEGER);
+  BEGIN
+    VARIABLE j : INTEGER
+    j = i;
+    j = SUCC (j);
+    j = j - i;
+    RETURN (j);
+  END
+
+BEGIN
+  VARIABLE i : INTEGER;;
+
+END