[RFA/testsuite] Test printing complex numbers in C

Daniel Jacobowitz
2002-10-05T03:21:36Z

Fernando,

I think this test submission got lost, so here it is again. It's a test for
the printing of complex numbers in C, for those compilers which support it.
The test is GCC specific right now.

[By the way, it fails on GCC 3.0/stabs because of a (probably) GCC bug in
debug information. Still not fixed in 3.2. It also fails in GCC
2.95/DWARF-2 because of a bug with __attribute__((packed)). We can sort out
XFAILs later, I have some ideas on that front.]

--
Daniel Jacobowitz Carnegie Mellon University
MontaVista Software Debian GNU/Linux Developer

2002-03-20 Daniel Jacobowitz <drow@mvista.com>

* gdb.base/complex.c: New file.
* gdb.base/complex.exp: New file.

--- /dev/null Wed Dec 31 19:00:00 1969
+++ gdb/testsuite/gdb.base/complex.c Wed Mar 20 19:51:21 2002
@@ -0,0 +1,49 @@
+/* Test taken from GCC. Verify that we can print a structure containing
+ a complex number. */
+
+typedef __complex__ float cf;
+struct x { char c; cf f; } __attribute__ ((__packed__));
+struct unpacked_x { char c; cf f; };
+extern void f4 (struct unpacked_x*);
+extern void f3 (void);
+extern void f2 (struct x*);
+extern void f1 (void);
+int
+main (void)
+{
+ f1 ();
+ f3 ();
+ exit (0);
+}
+
+void
+f1 (void)
+{
+ struct x s;
+ s.f = 1;
+ s.c = 42;
+ f2 (&s);
+}
+
+void
+f2 (struct x *y)
+{
+ if (y->f != 1 || y->c != 42)
+ abort ();
+}
+
+void
+f3 (void)
+{
+ struct unpacked_x s;
+ s.f = 1;
+ s.c = 42;
+ f4 (&s);
+}
+
+void
+f4 (struct unpacked_x *y)
+{
+ if (y->f != 1 || y->c != 42)
+ abort ();
+}
--- /dev/null Wed Dec 31 19:00:00 1969
+++ gdb/testsuite/gdb.base/complex.exp Wed Mar 20 19:50:45 2002
@@ -0,0 +1,56 @@
+# Copyright 2002 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
+
+if $tracelevel then {
+ strace $tracelevel
+}
+
+set bug_id 0
+
+set testfile complex
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+set options debug
+
+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable $options] != "" } {
+ # No support for __complex__, presumably.
+ unsupported "print complex packed value in C"
+ unsupported "print complex value in C"
+ return 0
+}
+
+# Start with a fresh gdb.
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load $binfile
+
+if [runto f2] then {
+ gdb_test "p *y" "\\\$\[0-9\]* = \{c = 42 '\\*', f = 1 \\+ 0 \\* I\}" \
+ "print complex packed value in C"
+}
+
+if [runto f4] then {
+ gdb_test "p *y" "\\\$\[0-9\]* = \{c = 42 '\\*', f = 1 \\+ 0 \\* I\}" \
+ "print complex value in C"
+
+}
+
+return 0