Date: Sun, 27 Jan 2002 16:16:26 -0700 From: Chad David <davidc@acns.ab.ca> To: "Andrey A. Chernov" <ache@nagual.pp.ru> Cc: "Brian F. Feldman" <green@FreeBSD.ORG>, Bruce Evans <bde@zeta.org.au>, arch@FreeBSD.ORG Subject: Re: strtod() Message-ID: <20020127161626.A62332@colnta.acns.ab.ca> In-Reply-To: <20020127224529.GA20003@nagual.pp.ru>; from ache@nagual.pp.ru on Mon, Jan 28, 2002 at 01:45:30AM %2B0300 References: <20020126162924.A7726@colnta.acns.ab.ca> <200201270453.g0R4rwi92912@green.bikeshed.org> <20020127070421.GA13415@nagual.pp.ru> <20020127003719.A38420@colnta.acns.ab.ca> <20020127083529.GA13957@nagual.pp.ru> <20020127024626.B40668@colnta.acns.ab.ca> <20020127105258.GA14836@nagual.pp.ru> <20020127130625.A42735@colnta.acns.ab.ca> <20020127224529.GA20003@nagual.pp.ru>
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[-- Attachment #1 --]
On Mon, Jan 28, 2002 at 01:45:30AM +0300, Andrey A. Chernov wrote:
> On Sun, Jan 27, 2002 at 13:06:25 -0700, Chad David wrote:
>
> > $4 = {int_curr_symbol = 0x80549ac "", currency_symbol = 0x80549ac "",
> > mon_decimal_point = 0x80549ac "", mon_thousands_sep = 0x80549ac "",
> > mon_grouping = 0x80549ad "\177", positive_sign = 0x80549ac "",
> > negative_sign = 0x80549ac "", int_frac_digits = 0x80549ad "\177",
> > frac_digits = 0x80549ad "\177", p_cs_precedes = 0x80549ad "\177",
> > p_sep_by_space = 0x80549ad "\177", n_cs_precedes = 0x80549ad "\177",
> > n_sep_by_space = 0x80549ad "\177", p_sign_posn = 0x80549ad "\177",
> > n_sign_posn = 0x80549ad "\177"}
> >
>
> It looks right. cnv() must be never called on that, it already converted.
I don't understand what you mean.
> From where failing cnv() call occurse, on which field? Post your minimal
> test, at least.
>
I've attached the simple program I'm using to test, as well as the gdb
session that should explain what I am doing.
--
Chad David davidc@acns.ab.ca
www.FreeBSD.org davidc@freebsd.org
ACNS Inc. Calgary, Alberta Canada
Fourthly, The constant breeders, beside the gain of eight shillings
sterling per annum by the sale of their children, will be rid of the
charge of maintaining them after the first year. - Johnathan Swift
[-- Attachment #2 --]
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <limits.h>
int
main(int argc, char **argv) {
double d;
char *c;
int i;
if (argc != 2) {
fprintf(stderr, "Usage: %s [double]\n", argv[0]);
exit(1);
}
for (i = 0; i < 2 ; i++) {
errno = 0;
d = strtod(argv[1], &c);
if (d == 0.0 && errno == EINVAL)
printf("strtod() failed 1 [%d]\n", i);
if (d == 0.0 && c == argv[1])
printf("strtod() failed 2 [%d]\n", i);
printf("strtod() returned %f [%d]\n", d, i);
}
exit(0);
}
[-- Attachment #3 --]
colnta->gdb strtod /usr/home/davidc/tmp/strtod
GNU gdb 4.18
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-unknown-freebsd"...
(gdb) b strtod
Breakpoint 1 at 0x804c484: file /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/stdlib/strtod.c, line 1201.
(gdb) run 0.0
Starting program: /mnt1/home/davidc/tmp/strtod/strtod 0.0
Breakpoint 1, strtod (s00=0xbfbff82c "0.0", se=0xbfbff6ac)
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/stdlib/strtod.c:1201
1201 char decimal_point = localeconv()->decimal_point[0];
(gdb) s
localeconv ()
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/locale/localeconv.c:77
77 if (__mlocale_changed) {
(gdb) s
84 mptr = __get_current_monetary_locale();
(gdb) s
__get_current_monetary_locale ()
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/locale/lmonetary.c:81
81 return (_monetary_using_locale
(gdb) s
localeconv ()
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/locale/localeconv.c:85
85 M_ASSIGN_STR(int_curr_symbol);
(gdb) p mptr
$1 = (struct lc_monetary_T *) 0x8052a20
(gdb) p *mptr
$2 = {int_curr_symbol = 0x8054a0c "", currency_symbol = 0x8054a0c "",
mon_decimal_point = 0x8054a0c "", mon_thousands_sep = 0x8054a0c "",
mon_grouping = 0x8054a0d "\177", positive_sign = 0x8054a0c "",
negative_sign = 0x8054a0c "", int_frac_digits = 0x8054a0d "\177",
frac_digits = 0x8054a0d "\177", p_cs_precedes = 0x8054a0d "\177",
p_sep_by_space = 0x8054a0d "\177", n_cs_precedes = 0x8054a0d "\177",
n_sep_by_space = 0x8054a0d "\177", p_sign_posn = 0x8054a0d "\177",
n_sign_posn = 0x8054a0d "\177"}
(gdb) s
86 M_ASSIGN_STR(currency_symbol);
(gdb) s
87 M_ASSIGN_STR(mon_decimal_point);
(gdb) s
88 M_ASSIGN_STR(mon_thousands_sep);
(gdb) s
89 M_ASSIGN_STR(mon_grouping);
(gdb) s
90 M_ASSIGN_STR(positive_sign);
(gdb) s
91 M_ASSIGN_STR(negative_sign);
(gdb) s
92 M_ASSIGN_CHAR(int_frac_digits);
(gdb) s
cnv (str=0x8054a0d "\177")
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/locale/localeconv.c:63
63 int i = strtol(str, NULL, 10);
(gdb) s
strtol (nptr=0x8054a0d "\177", endptr=0x0, base=10)
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/stdlib/strtol.c:69
69 s = nptr;
(gdb) s
71 c = *s++;
(gdb) s
72 } while (isspace((unsigned char)c));
(gdb) s
152 return ((_c < 0 || _c >= _CACHED_RUNES) ___runetype(_c) :
(gdb) s
72 } while (isspace((unsigned char)c));
73 if (c == '-') {
(gdb) s
77 neg = 0;
(gdb) s
78 if (c == '+')
(gdb) s
81 if ((base == 0 || base == 16) &&
(gdb) s
87 if (base == 0)
(gdb) s
89 acc = any = 0;
(gdb) s
90 if (base < 2 || base > 36)
(gdb) s
110 cutoff = neg (unsigned long)-(LONG_MIN + LONG_MAX) + LONG_MAX
(gdb) s
113 cutoff /= base;
(gdb) s
114 for ( ; ; c = *s++) {
(gdb) s
115 if (c >= '0' && c <= '9')
(gdb) s
117 else if (c >= 'A' && c <= 'Z')
(gdb) s
119 else if (c >= 'a' && c <= 'z')
(gdb) s
133 if (any < 0) {
(gdb) s
138 errno = EINVAL;
(gdb) s
__error_unthreaded ()
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/sys/__error.c:48
48 return(&errno);
(gdb) s
strtol (nptr=0x8054a0d "\177", endptr=0x0, base=10)
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/stdlib/strtol.c:139
139 } else if (neg)
(gdb) s
141 if (endptr != NULL)
(gdb) s
143 return (acc);
(gdb) s
cnv (str=0x8054a0d "\177")
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/locale/localeconv.c:64
64 if (i == -1)
(gdb) s
66 return (char)i;
(gdb) s
localeconv ()
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/locale/localeconv.c:93
93 M_ASSIGN_CHAR(frac_digits);
(gdb) s
cnv (str=0x8054a0d "\177")
at /mnt1/devel/work/dev/bsd/FreeBSD/src/lib/libc/../libc/locale/localeconv.c:63
63 int i = strtol(str, NULL, 10);
(gdb)p str
$3 = 0x8054a0d "\177"
(gdb) p errno
$4 = 22
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