Check that GDB and the C compiler agree about the sizeof a few basic C

types.
This commit is contained in:
Andrew Cagney 2000-07-13 05:07:54 +00:00
parent 5b4cf3f497
commit 2391e11d3a
3 changed files with 172 additions and 0 deletions

View File

@ -1,3 +1,13 @@
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.
Wed Jul 12 18:14:29 2000 Andrew Cagney <cagney@b1.cygnus.com>
* gdb.base/exprs.exp: Test casts to a pointer including over and
underflow.
2000-07-09 Nick Duffek <nsd@redhat.com>
* gdb.c++/misc.cc (class ClassParam, class_param): Define.

View File

@ -0,0 +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;
}

View File

@ -0,0 +1,145 @@
# Copyright (C) 2000 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 {
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
}
}
}