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BASH PATCH REPORT
=================
Bash-Release: 3.2
Patch-ID: bash32-005
Bug-Reported-by: Stuart Shelton <stuart@openobjects.com>
Bug-Reference-ID: <453F7CC8.6030907@openobjects.com>
Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2006-10/msg00127.html
Bug-Description:
A missing extern declaration for `asprintf' caused `double' arguments to be
passed as `0', leading to incorrect results. Additionally, a bug in the
replacement asprintf/snprintf function caused an infinite loop when passed
0 arguments to the floating point conversions under some circumstances.
Patch:
*** bash-3.2/builtins/printf.def Mon Sep 18 08:48:42 2006
--- bash-3.2/builtins/printf.def Tue Oct 31 08:19:44 2006
***************
*** 49,54 ****
--- 49,60 ----
# define INT_MIN (-2147483647-1)
#endif
+ #if defined (PREFER_STDARG)
+ # include <stdarg.h>
+ #else
+ # include <varargs.h>
+ #endif
+
#include <stdio.h>
#include <chartypes.h>
***************
*** 151,156 ****
--- 157,166 ----
#define SKIP1 "#'-+ 0"
#define LENMODS "hjlLtz"
+ #ifndef HAVE_ASPRINTF
+ extern int asprintf __P((char **, const char *, ...)) __attribute__((__format__ (printf, 2, 3)));
+ #endif
+
static void printf_erange __P((char *));
static int printstr __P((char *, char *, int, int, int));
static int tescape __P((char *, char *, int *));
*** bash-3.2/lib/sh/snprintf.c Thu Apr 6 09:48:40 2006
--- bash-3.2/lib/sh/snprintf.c Sat Oct 28 00:00:13 2006
***************
*** 471,476 ****
--- 476,483 ----
10^x ~= r
* log_10(200) = 2;
* log_10(250) = 2;
+ *
+ * NOTE: do not call this with r == 0 -- an infinite loop results.
*/
static int
log_10(r)
***************
*** 576,583 ****
{
integral_part[0] = '0';
integral_part[1] = '\0';
! fraction_part[0] = '0';
! fraction_part[1] = '\0';
if (fract)
*fract = fraction_part;
return integral_part;
--- 583,593 ----
{
integral_part[0] = '0';
integral_part[1] = '\0';
! /* The fractional part has to take the precision into account */
! for (ch = 0; ch < precision-1; ch++)
! fraction_part[ch] = '0';
! fraction_part[ch] = '0';
! fraction_part[ch+1] = '\0';
if (fract)
*fract = fraction_part;
return integral_part;
***************
*** 805,810 ****
--- 815,821 ----
PUT_CHAR(*tmp, p);
tmp++;
}
+
PAD_LEFT(p);
}
***************
*** 972,982 ****
if ((p->flags & PF_THOUSANDS) && grouping && (t = groupnum (tmp)))
tmp = t;
/* calculate the padding. 1 for the dot */
p->width = p->width -
((d > 0. && p->justify == RIGHT) ? 1:0) -
((p->flags & PF_SPACE) ? 1:0) -
! strlen(tmp) - p->precision - 1;
PAD_RIGHT(p);
PUT_PLUS(d, p, 0.);
PUT_SPACE(d, p, 0.);
--- 983,1003 ----
if ((p->flags & PF_THOUSANDS) && grouping && (t = groupnum (tmp)))
tmp = t;
+ if ((*p->pf == 'g' || *p->pf == 'G') && (p->flags & PF_ALTFORM) == 0)
+ {
+ /* smash the trailing zeros unless altform */
+ for (i = strlen(tmp2) - 1; i >= 0 && tmp2[i] == '0'; i--)
+ tmp2[i] = '\0';
+ if (tmp2[0] == '\0')
+ p->precision = 0;
+ }
+
/* calculate the padding. 1 for the dot */
p->width = p->width -
((d > 0. && p->justify == RIGHT) ? 1:0) -
((p->flags & PF_SPACE) ? 1:0) -
! strlen(tmp) - p->precision -
! ((p->precision != 0 || (p->flags & PF_ALTFORM)) ? 1 : 0); /* radix char */
PAD_RIGHT(p);
PUT_PLUS(d, p, 0.);
PUT_SPACE(d, p, 0.);
***************
*** 991,1001 ****
if (p->precision != 0 || (p->flags & PF_ALTFORM))
PUT_CHAR(decpoint, p); /* put the '.' */
- if ((*p->pf == 'g' || *p->pf == 'G') && (p->flags & PF_ALTFORM) == 0)
- /* smash the trailing zeros unless altform */
- for (i = strlen(tmp2) - 1; i >= 0 && tmp2[i] == '0'; i--)
- tmp2[i] = '\0';
-
for (; *tmp2; tmp2++)
PUT_CHAR(*tmp2, p); /* the fraction */
--- 1012,1017 ----
***************
*** 1011,1024 ****
char *tmp, *tmp2;
int j, i;
! if (chkinfnan(p, d, 1) || chkinfnan(p, d, 2))
return; /* already printed nan or inf */
GETLOCALEDATA(decpoint, thoussep, grouping);
DEF_PREC(p);
! j = log_10(d);
! d = d / pow_10(j); /* get the Mantissa */
! d = ROUND(d, p);
tmp = dtoa(d, p->precision, &tmp2);
/* 1 for unit, 1 for the '.', 1 for 'e|E',
--- 1027,1045 ----
char *tmp, *tmp2;
int j, i;
! if (d != 0 && (chkinfnan(p, d, 1) || chkinfnan(p, d, 2)))
return; /* already printed nan or inf */
GETLOCALEDATA(decpoint, thoussep, grouping);
DEF_PREC(p);
! if (d == 0.)
! j = 0;
! else
! {
! j = log_10(d);
! d = d / pow_10(j); /* get the Mantissa */
! d = ROUND(d, p);
! }
tmp = dtoa(d, p->precision, &tmp2);
/* 1 for unit, 1 for the '.', 1 for 'e|E',
***************
*** 1076,1081 ****
--- 1097,1103 ----
PUT_CHAR(*tmp, p);
tmp++;
}
+
PAD_LEFT(p);
}
#endif
***************
*** 1358,1364 ****
STAR_ARGS(data);
DEF_PREC(data);
d = GETDOUBLE(data);
! i = log_10(d);
/*
* for '%g|%G' ANSI: use f if exponent
* is in the range or [-4,p] exclusively
--- 1380,1386 ----
STAR_ARGS(data);
DEF_PREC(data);
d = GETDOUBLE(data);
! i = (d != 0.) ? log_10(d) : -1;
/*
* for '%g|%G' ANSI: use f if exponent
* is in the range or [-4,p] exclusively
*** bash-3.2/patchlevel.h Thu Apr 13 08:31:04 2006
--- bash-3.2/patchlevel.h Mon Oct 16 14:22:54 2006
***************
*** 26,30 ****
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 4
#endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 5
#endif /* _PATCHLEVEL_H_ */
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