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[rfa/testsuite] check sizeof
- To: GDB Patches <gdb-patches at sourceware dot cygnus dot com>
- Subject: [rfa/testsuite] check sizeof
- From: Andrew Cagney <ac131313 at cygnus dot com>
- Date: Thu, 13 Jul 2000 12:22:55 +1000
Hello,
The attatched checks that GDB and the running program agree over how
large a few basic C types are. As a convenience, it also dumps out the
gdbarch so that tracking down failures is easier.
Ok? (I'll quickly fix the copyright dates).
Andrew
Thu Jul 13 11:52:53 2000 Andrew Cagney <cagney@b1.cygnus.com>
* gdb.base/sizeof.exp, gdb.base/sizeof.c: New files. Compare GDB
and the compilers sizes.
Index: testsuite/gdb.base/sizeof.c
===================================================================
RCS file: sizeof.c
diff -N sizeof.c
*** /dev/null Tue May 5 13:32:27 1998
--- sizeof.c Wed Jul 12 19:19:04 2000
***************
*** 0 ****
--- 1,17 ----
+ int
+ main ()
+ {
+ printf ("sizeof (char) == %d\n", sizeof (char));
+ printf ("sizeof (short) == %d\n", sizeof (short));
+ printf ("sizeof (int) == %d\n", sizeof (int));
+ printf ("sizeof (long) == %d\n", sizeof (long));
+ printf ("sizeof (long long) == %d\n", sizeof (long long));
+
+ printf ("sizeof (void *) == %d\n", sizeof (void*));
+ printf ("sizeof (void (*)(void)) == %d\n", sizeof (void (*)(void)));
+
+ printf ("sizeof (float) == %d\n", sizeof (float));
+ printf ("sizeof (double) == %d\n", sizeof (double));
+ printf ("sizeof (long double) == %d\n", sizeof (long double));
+ return 0;
+ }
Index: testsuite/gdb.base/sizeof.exp
===================================================================
RCS file: sizeof.exp
diff -N sizeof.exp
*** /dev/null Tue May 5 13:32:27 1998
--- sizeof.exp Wed Jul 12 19:19:04 2000
***************
*** 0 ****
--- 1,147 ----
+ # Copyright (C) 1988, 1990, 1991, 1992, 1994, 1997 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
+
+ # This file was written by Rob Savoye. (rob@cygnus.com)
+
+ if $tracelevel {
+ strace $tracelevel
+ }
+
+ #
+ # test running programs
+ #
+ set prms_id 0
+ set bug_id 0
+
+ set testfile "sizeof"
+ set srcfile ${testfile}.c
+ set binfile ${objdir}/${subdir}/${testfile}
+ if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
+ gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
+ }
+
+ if [get_compiler_info ${binfile}] {
+ return -1;
+ }
+
+ gdb_exit
+ gdb_start
+ gdb_reinitialize_dir $srcdir/$subdir
+ gdb_load ${binfile}
+
+ #
+ # set it up at a breakpoint so we can play with the variable values
+ #
+
+ if ![runto_main] then {
+ perror "couldn't run to breakpoint"
+ continue
+ }
+
+ #
+ # Query GDB for the size of various types
+ #
+
+ proc get_sizeof { type default } {
+ global gdb_prompt
+ send_gdb "print/d sizeof (${type})\n"
+ gdb_expect {
+ -re "\\$\[0-9\]* = (\[0-9\]*).*$gdb_prompt $" {
+ set size $expect_out(1,string)
+ pass "get sizeof ${type} ($size)"
+ }
+ timeout {
+ set size ${default}
+ fail "get sizeof ${type} (timeout)"
+ }
+ }
+ return ${size}
+ }
+
+ set sizeof_char [get_sizeof "char" 1]
+ set sizeof_short [get_sizeof "short" 2]
+ set sizeof_int [get_sizeof "int" 4]
+ set sizeof_long [get_sizeof "long" 4]
+ set sizeof_long_long [get_sizeof "long long" 8]
+
+ set sizeof_data_ptr [get_sizeof "void *" 4]
+ set sizeof_func_ptr [get_sizeof "void (*)(void)" 4]
+
+ set sizeof_float [get_sizeof "float" 4]
+ set sizeof_double [get_sizeof "double" 8]
+ set sizeof_long_double [get_sizeof "long double" 8]
+
+
+ #
+ # Compare GDB's idea of types with the running program
+ #
+
+ proc check_sizeof { type size } {
+ global gdb_prompt
+ set pat [string_to_regexp ${type}]
+ send_gdb "next\n"
+ gdb_expect {
+ -re "sizeof \\(${pat}\\) == ${size}\[\r\n\].*$gdb_prompt $" {
+ pass "check sizeof ${type} == ${size}"
+ }
+ -re ".*$gdb_prompt $" {
+ fail "check sizeof ${type} == ${size}"
+ }
+ timeout {
+ fail "check sizeof ${type} == ${size} (timeout)"
+ }
+ }
+ }
+
+ check_sizeof "char" ${sizeof_char}
+ check_sizeof "short" ${sizeof_short}
+ check_sizeof "int" ${sizeof_int}
+ check_sizeof "long" ${sizeof_long}
+ check_sizeof "long long" ${sizeof_long_long}
+
+ check_sizeof "void *" ${sizeof_data_ptr}
+ check_sizeof "void (*)(void)" ${sizeof_func_ptr}
+
+ check_sizeof "float" ${sizeof_float}
+ check_sizeof "double" ${sizeof_double}
+ check_sizeof "long double" ${sizeof_long_double}
+
+
+ #
+ # For reference, dump out the entire architecture
+ #
+ # The output is very long so use a while loop to consume it
+ send_gdb "maint print arch\n"
+ set ok 1
+ while { $ok } {
+ gdb_expect {
+ -re ".*dump" {
+ #pass "maint print arch $ok"
+ #set ok [expr $ok + 1]
+ }
+ -re "$gdb_prompt $" {
+ pass "maint print arch"
+ set ok 0
+ }
+ timeout {
+ fail "maint print arch (timeout)"
+ set ok 0
+ }
+ }
+ }