* gdb.base/sizeof.c (main): Call fill_structs. Print value of
signed, unsigned and straight char. (padding_char, padding_short, padding_int, padding_long, padding_long_long, padding_float, padding_double, padding_long_double): New global variables. (fill, fill_structs): New functions. * gdb.base/sizeof.exp: Check for signed and unsigned char. Check for correctly sized writes. Update copyright. (get_valueof): New procedure. (get_sizeof): Call get_valueof. (check_valueof): New procedure. (check_padding): New procedure.
This commit is contained in:
Andrew Cagney
parent
73823b989b
commit
edcc8c754b
3 changed files with 188 additions and 11 deletions
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@ -1,3 +1,19 @@
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2002-02-20 Andrew Cagney <ac131313@redhat.com>
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* gdb.base/sizeof.c (main): Call fill_structs. Print value of
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signed, unsigned and straight char.
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(padding_char, padding_short, padding_int, padding_long,
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padding_long_long, padding_float, padding_double,
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padding_long_double): New global variables.
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(fill, fill_structs): New functions.
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* gdb.base/sizeof.exp: Check for signed and unsigned char. Check
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for correctly sized writes. Update copyright.
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(get_valueof): New procedure.
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(get_sizeof): Call get_valueof.
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(check_valueof): New procedure.
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(check_padding): New procedure.
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2002-02-20 Michael Chastain <mec@shout.net>
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* gdb.c++/virtfunc.exp (test_virtual_calls): Remove obsolete calls
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@ -1,8 +1,105 @@
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#include <stdio.h>
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typedef char padding[16];
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struct {
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padding p1;
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char v;
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padding p2;
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} padding_char;
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struct {
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padding p1;
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short v;
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padding p2;
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} padding_short;
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struct {
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padding p1;
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int v;
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padding p2;
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} padding_int;
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struct {
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padding p1;
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long v;
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padding p2;
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} padding_long;
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struct {
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padding p1;
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long long v;
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padding p2;
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} padding_long_long;
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struct {
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padding p1;
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float v;
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padding p2;
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} padding_float;
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struct {
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padding p1;
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double v;
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padding p2;
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} padding_double;
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struct {
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padding p1;
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long double v;
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padding p2;
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} padding_long_double;
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static void
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fill (void *buf, long sizeof_buf)
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{
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char *p = buf;
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int i;
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for (i = 0; i < sizeof_buf; i++)
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p[i] = "The quick brown dingo jumped over the layzy dog."[i];
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}
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void
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fill_structs (void)
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{
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fill (&padding_char.p1, sizeof (padding));
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fill (&padding_char.v, sizeof (padding_char.v));
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fill (&padding_char.p2, sizeof (padding));
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fill (&padding_short.p1, sizeof (padding));
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fill (&padding_short.v, sizeof (padding_short.v));
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fill (&padding_short.p2, sizeof (padding));
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fill (&padding_int.p1, sizeof (padding));
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fill (&padding_int.v, sizeof (padding_int.v));
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fill (&padding_int.p2, sizeof (padding));
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fill (&padding_long.p1, sizeof (padding));
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fill (&padding_long.v, sizeof (padding_long.v));
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fill (&padding_long.p2, sizeof (padding));
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fill (&padding_long_long.p1, sizeof (padding));
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fill (&padding_long_long.v, sizeof (padding_long_long.v));
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fill (&padding_long_long.p2, sizeof (padding));
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fill (&padding_float.p1, sizeof (padding));
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fill (&padding_float.v, sizeof (padding_float.v));
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fill (&padding_float.p2, sizeof (padding));
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fill (&padding_double.p1, sizeof (padding));
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fill (&padding_double.v, sizeof (padding_double.v));
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fill (&padding_double.p2, sizeof (padding));
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fill (&padding_long_double.p1, sizeof (padding));
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fill (&padding_long_double.v, sizeof (padding_long_double.v));
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fill (&padding_long_double.p2, sizeof (padding));
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}
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int
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main ()
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{
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fill_structs ();
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printf ("sizeof (char) == %d\n", sizeof (char));
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printf ("sizeof (short) == %d\n", sizeof (short));
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printf ("sizeof (int) == %d\n", sizeof (int));
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@ -15,5 +112,11 @@ main ()
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printf ("sizeof (float) == %d\n", sizeof (float));
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printf ("sizeof (double) == %d\n", sizeof (double));
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printf ("sizeof (long double) == %d\n", sizeof (long double));
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/* Signed char? */
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printf ("valueof ((int) (char) -1) == %d\n", (int) (char) -1);
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printf ("valueof ((int) (signed char) -1) == %d\n", (int) (signed char) -1);
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printf ("valueof ((int) (unsigned char) -1) == %d\n", (int) (unsigned char) -1);
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return 0;
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}
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@ -1,4 +1,4 @@
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# Copyright 2000 Free Software Foundation, Inc.
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# Copyright 2000, 2002 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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@ -56,22 +56,28 @@ if ![runto_main] then {
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# Query GDB for the size of various types
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#
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proc get_sizeof { type default } {
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proc get_valueof { fmt exp default } {
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global gdb_prompt
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send_gdb "print/d sizeof (${type})\n"
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send_gdb "print${fmt} ${exp}\n"
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gdb_expect {
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-re "\\$\[0-9\]* = (\[0-9\]*).*$gdb_prompt $" {
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set size $expect_out(1,string)
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pass "get sizeof ${type} ($size)"
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-re "\\$\[0-9\]* = (\[-\]*\[0-9\]*).*$gdb_prompt $" {
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set val $expect_out(1,string)
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pass "get value of ${exp} ($val)"
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}
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timeout {
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set size ${default}
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fail "get sizeof ${type} (timeout)"
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fail "get value of ${exp} (timeout)"
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}
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}
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return ${size}
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return ${val}
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}
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proc get_sizeof { type default } {
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return [get_valueof "/d" "sizeof (${type})" $default]
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}
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gdb_test "next"
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set sizeof_char [get_sizeof "char" 1]
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set sizeof_short [get_sizeof "short" 2]
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set sizeof_int [get_sizeof "int" 4]
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@ -85,7 +91,6 @@ set sizeof_float [get_sizeof "float" 4]
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set sizeof_double [get_sizeof "double" 8]
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set sizeof_long_double [get_sizeof "long double" 8]
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#
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# Compare GDB's idea of types with the running program
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#
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@ -97,10 +102,10 @@ proc check_sizeof { type size } {
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return;
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}
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set pat [string_to_regexp ${type}]
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set pat [string_to_regexp "sizeof (${type}) == ${size}"]
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send_gdb "next\n"
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gdb_expect {
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-re "sizeof \\(${pat}\\) == ${size}\[\r\n\].*$gdb_prompt $" {
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-re "${pat}\[\r\n\].*$gdb_prompt $" {
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pass "check sizeof ${type} == ${size}"
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}
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-re ".*$gdb_prompt $" {
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@ -125,6 +130,59 @@ check_sizeof "float" ${sizeof_float}
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check_sizeof "double" ${sizeof_double}
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check_sizeof "long double" ${sizeof_long_double}
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proc check_valueof { exp val } {
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global gdb_prompt
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if [gdb_skip_stdio_test "check valueof $exp == $val"] {
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return;
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}
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set pat [string_to_regexp "valueof (${exp}) == ${val}"]
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send_gdb "next\n"
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gdb_expect {
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-re "${pat}\[\r\n\].*$gdb_prompt $" {
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pass "check valueof ${exp} == ${val}"
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}
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-re ".*$gdb_prompt $" {
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fail "check valueof ${exp} == ${val}"
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}
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timeout {
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fail "check valueof ${exp} == ${val} (timeout)"
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}
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}
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}
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# Check that GDB and the target agree over the sign of a character.
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set signof_char [get_valueof "/d" "(int) (char) -1" -1]
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set signof_signed_char [get_valueof "/d" "(int) (signed char) -1" -1]
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set signof_unsigned_char [get_valueof "/d" "(int) (unsigned char) -1" -1]
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check_valueof "(int) (char) -1" ${signof_char}
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check_valueof "(int) (signed char) -1" ${signof_signed_char}
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check_valueof "(int) (unsigned char) -1" ${signof_unsigned_char}
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proc check_padding { fmt type val } {
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global gdb_prompt
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gdb_test "set padding_${type}.v = ${val}"
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gdb_test "print padding_${type}.p1" "= \"The quick brown \""
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gdb_test "print${fmt} padding_${type}.v" "= ${val}"
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gdb_test "print padding_${type}.p2" "\"The quick brown \".*"
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}
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# Check that GDB is managing to store a value in a struct field
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# without corrupting the fields immediately adjacent to it.
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check_padding "/d" "char" 1
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check_padding "/d" "short" 2
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check_padding "/d" "int" 4
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check_padding "/d" "long" 4
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check_padding "/d" "long_long" 8
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# use multiples of two which can be represented exactly
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check_padding "/f" "float" 1
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check_padding "/f" "double" 2
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check_padding "/f" "long_double" 4
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#
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# For reference, dump out the entire architecture
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