On Wednesday 08 March 2006 10:11 pm, Peter Valchev wrote:
> > While trying to build www/minimo on amd64 -current 
> > shlibsign coredumps. 
> ..
> This is caused by patch-nsprpub_pr_src_misc_prdtoa_c which I
> added in order to fix a similar crash on Zaurus.  The patch
> ripped out the mozilla implementation of strtod(3) with the
> one taken directly from our libc.  I have no clue why this
> broke amd64 and have not figured it out yet.  Feel free to
> hack at it.
> 

freedtoa should be removed since our strtod(3) dtoa
implementation uses a static var to handle result
allocation, but doesn't always return that. Also since
static vars are in use in places, I added back in
the locks to protect them and added one more to
protect the dtoa return value too.

This fixes the build on sparc64 for me and I expect
it should help stability elsewhere too.

-Kurt
Index: Makefile
===================================================================
RCS file: /cvs/ports/www/minimo/Makefile,v
retrieving revision 1.17
diff -u -r1.17 Makefile
--- Makefile	27 Mar 2006 04:23:29 -0000	1.17
+++ Makefile	19 Apr 2006 21:44:57 -0000
@@ -5,7 +5,7 @@
 
 COMMENT=	"mini mozilla"
 DISTNAME=	minimo-20050802
-PKGNAME=	${DISTNAME}p6
+PKGNAME=	${DISTNAME}p7
 SO_VERSION=	2.0
 # NOTE: Must bump minor version if any shlib's are removed from the
 # components dir to avoid pkg_add -r issues.
Index: patches/patch-nsprpub_pr_src_misc_prdtoa_c
===================================================================
RCS file: /cvs/ports/www/minimo/patches/patch-nsprpub_pr_src_misc_prdtoa_c,v
retrieving revision 1.2
diff -u -r1.2 patch-nsprpub_pr_src_misc_prdtoa_c
--- patches/patch-nsprpub_pr_src_misc_prdtoa_c	5 Feb 2006 02:39:18 -0000	1.2
+++ patches/patch-nsprpub_pr_src_misc_prdtoa_c	19 Apr 2006 21:44:57 -0000
@@ -1,6 +1,6 @@
 $OpenBSD: patch-nsprpub_pr_src_misc_prdtoa_c,v 1.2 2006/02/05 02:39:18 pvalchev Exp $
---- nsprpub/pr/src/misc/prdtoa.c.orig	Tue Apr 27 18:34:07 2004
-+++ nsprpub/pr/src/misc/prdtoa.c	Sat Feb  4 18:47:53 2006
+--- nsprpub/pr/src/misc/prdtoa.c.orig	Tue Apr 27 20:34:07 2004
++++ nsprpub/pr/src/misc/prdtoa.c	Wed Apr 19 17:24:23 2006
 @@ -1,82 +1,8 @@
 -/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 -/* ***** BEGIN LICENSE BLOCK *****
@@ -166,7 +166,7 @@
   * #define KR_headers for old-style C function headers.
   * #define Bad_float_h if your system lacks a float.h or if it does not
   *	define some or all of DBL_DIG, DBL_MAX_10_EXP, DBL_MAX_EXP,
-@@ -175,89 +87,82 @@ void _PR_CleanupDtoa(void)
+@@ -175,89 +87,85 @@ void _PR_CleanupDtoa(void)
   *	if memory is available and otherwise does something you deem
   *	appropriate.  If MALLOC is undefined, malloc will be invoked
   *	directly -- and assumed always to succeed.
@@ -247,12 +247,13 @@
 +#define ACQUIRE_DTOA_LOCK(n)    PR_Lock(dtoa_lock[n])
 +#define FREE_DTOA_LOCK(n)       PR_Unlock(dtoa_lock[n])
 +
-+static PRLock *dtoa_lock[2];
++static PRLock *dtoa_lock[3];
 +
 +void _PR_InitDtoa(void)
 +{
 +    dtoa_lock[0] = PR_NewLock();
 +    dtoa_lock[1] = PR_NewLock();
++    dtoa_lock[2] = PR_NewLock();
 +}
 +
 +void _PR_CleanupDtoa(void)
@@ -261,6 +262,8 @@
 +    dtoa_lock[0] = NULL;
 +    PR_DestroyLock(dtoa_lock[1]);
 +    dtoa_lock[1] = NULL;
++    PR_DestroyLock(dtoa_lock[2]);
++    dtoa_lock[2] = NULL;
 +
 +    /* FIXME: deal with freelist and p5s. */
 +}
@@ -318,7 +321,7 @@
  
  #ifdef MALLOC
  #ifdef KR_headers
-@@ -269,42 +174,32 @@ extern void *MALLOC(size_t);
+@@ -269,42 +177,32 @@ extern void *MALLOC(size_t);
  #define MALLOC malloc
  #endif
  
@@ -373,7 +376,7 @@
  #define DBL_MAX 7.2370055773322621e+75
  #endif
  
-@@ -313,27 +208,16 @@ static double private_mem[PRIVATE_mem], 
+@@ -313,27 +211,16 @@ static double private_mem[PRIVATE_mem], 
  #define DBL_MAX_10_EXP 38
  #define DBL_MAX_EXP 127
  #define FLT_RADIX 2
@@ -403,7 +406,7 @@
  #ifndef __MATH_H__
  #include "math.h"
  #endif
-@@ -350,37 +234,43 @@ extern "C" {
+@@ -350,37 +237,43 @@ extern "C" {
  #endif
  #endif
  
@@ -464,7 +467,7 @@
  #define Storeinc(a,b,c) (((unsigned short *)a)[1] = (unsigned short)b, \
  ((unsigned short *)a)[0] = (unsigned short)c, a++)
  #else
-@@ -394,7 +284,7 @@ typedef union { double d; ULong L[2]; } 
+@@ -394,7 +287,7 @@ typedef union { double d; ULong L[2]; } 
  /* Quick_max = floor((P-1)*log(FLT_RADIX)/log(10) - 1) */
  /* Int_max = floor(P*log(FLT_RADIX)/log(10) - 1) */
  
@@ -473,7 +476,7 @@
  #define Exp_shift  20
  #define Exp_shift1 20
  #define Exp_msk1    0x100000
-@@ -402,6 +292,7 @@ typedef union { double d; ULong L[2]; } 
+@@ -402,6 +295,7 @@ typedef union { double d; ULong L[2]; } 
  #define Exp_mask  0x7ff00000
  #define P 53
  #define Bias 1023
@@ -481,7 +484,7 @@
  #define Emin (-1022)
  #define Exp_1  0x3ff00000
  #define Exp_11 0x3ff00000
-@@ -419,38 +310,11 @@ typedef union { double d; ULong L[2]; } 
+@@ -419,38 +313,11 @@ typedef union { double d; ULong L[2]; } 
  #define Tiny1 1
  #define Quick_max 14
  #define Int_max 14
@@ -521,7 +524,7 @@
  #define Exp_shift  24
  #define Exp_shift1 24
  #define Exp_msk1   0x1000000
-@@ -475,8 +339,6 @@ typedef union { double d; ULong L[2]; } 
+@@ -475,8 +342,6 @@ typedef union { double d; ULong L[2]; } 
  #define Quick_max 14
  #define Int_max 15
  #else /* VAX */
@@ -530,7 +533,7 @@
  #define Exp_shift  23
  #define Exp_shift1 7
  #define Exp_msk1    0x80
-@@ -500,8 +362,8 @@ typedef union { double d; ULong L[2]; } 
+@@ -500,8 +365,8 @@ typedef union { double d; ULong L[2]; } 
  #define Tiny1 0
  #define Quick_max 15
  #define Int_max 15
@@ -541,7 +544,7 @@
  
  #ifndef IEEE_Arith
  #define ROUND_BIASED
-@@ -523,42 +385,25 @@ extern double rnd_prod(double, double), 
+@@ -523,42 +388,25 @@ extern double rnd_prod(double, double), 
  #define Big0 (Frac_mask1 | Exp_msk1*(DBL_MAX_EXP+Bias-1))
  #define Big1 0xffffffff
  
@@ -593,7 +596,7 @@
   struct
  Bigint {
  	struct Bigint *next;
-@@ -580,32 +425,16 @@ Balloc
+@@ -580,28 +428,14 @@ Balloc
  {
  	int x;
  	Bigint *rv;
@@ -601,7 +604,7 @@
 -	unsigned int len;
 -#endif
  
--	ACQUIRE_DTOA_LOCK(0);
+ 	ACQUIRE_DTOA_LOCK(0);
 -	if (rv = freelist[k]) {
 +	if ((rv = freelist[k])) {
  		freelist[k] = rv->next;
@@ -624,22 +627,7 @@
  		rv->k = k;
  		rv->maxwds = x;
  		}
--	FREE_DTOA_LOCK(0);
- 	rv->sign = rv->wds = 0;
- 	return rv;
- 	}
-@@ -619,10 +448,8 @@ Bfree
- #endif
- {
- 	if (v) {
--		ACQUIRE_DTOA_LOCK(0);
- 		v->next = freelist[v->k];
- 		freelist[v->k] = v;
--		FREE_DTOA_LOCK(0);
- 		}
- 	}
- 
-@@ -638,49 +465,37 @@ multadd
+@@ -638,49 +472,37 @@ multadd
  #endif
  {
  	int i, wds;
@@ -696,7 +684,7 @@
  		b->wds = wds;
  		}
  	return b;
-@@ -799,7 +614,7 @@ lo0bits
+@@ -799,7 +621,7 @@ lo0bits
  	if (!(x & 1)) {
  		k++;
  		x >>= 1;
@@ -705,7 +693,7 @@
  			return 32;
  		}
  	*y = x;
-@@ -832,16 +647,11 @@ mult
+@@ -832,16 +654,11 @@ mult
  {
  	Bigint *c;
  	int k, wa, wb, wc;
@@ -723,7 +711,7 @@
  
  	if (a->wds < b->wds) {
  		c = a;
-@@ -862,25 +672,9 @@ mult
+@@ -862,25 +679,9 @@ mult
  	xb = b->x;
  	xbe = xb + wb;
  	xc0 = c->x;
@@ -750,7 +738,7 @@
  			x = xa;
  			xc = xc0;
  			carry = 0;
-@@ -894,7 +688,7 @@ mult
+@@ -894,7 +695,7 @@ mult
  				while(x < xae);
  			*xc = carry;
  			}
@@ -759,7 +747,7 @@
  			x = xa;
  			xc = xc0;
  			carry = 0;
-@@ -926,7 +720,6 @@ mult
+@@ -926,7 +727,6 @@ mult
  			}
  		}
  #endif
@@ -767,7 +755,7 @@
  	for(xc0 = c->x, xc = xc0 + wc; wc > 0 && !*--xc; --wc) ;
  	c->wds = wc;
  	return c;
-@@ -946,24 +739,15 @@ pow5mult
+@@ -946,24 +746,19 @@ pow5mult
  	int i;
  	static int p05[3] = { 5, 25, 125 };
  
@@ -780,38 +768,38 @@
  	if (!(p5 = p5s)) {
  		/* first time */
 -#ifdef MULTIPLE_THREADS
--		ACQUIRE_DTOA_LOCK(1);
--		if (!(p5 = p5s)) {
--			p5 = p5s = i2b(625);
--			p5->next = 0;
--			}
--		FREE_DTOA_LOCK(1);
+ 		ACQUIRE_DTOA_LOCK(1);
+ 		if (!(p5 = p5s)) {
+ 			p5 = p5s = i2b(625);
+ 			p5->next = 0;
+ 			}
+ 		FREE_DTOA_LOCK(1);
 -#else
- 		p5 = p5s = i2b(625);
- 		p5->next = 0;
+-		p5 = p5s = i2b(625);
+-		p5->next = 0;
 -#endif
  		}
  	for(;;) {
  		if (k & 1) {
-@@ -974,17 +758,8 @@ pow5mult
+@@ -974,17 +769,12 @@ pow5mult
  		if (!(k >>= 1))
  			break;
  		if (!(p51 = p5->next)) {
 -#ifdef MULTIPLE_THREADS
--			ACQUIRE_DTOA_LOCK(1);
--			if (!(p51 = p5->next)) {
--				p51 = p5->next = mult(p5,p5);
--				p51->next = 0;
--				}
--			FREE_DTOA_LOCK(1);
+ 			ACQUIRE_DTOA_LOCK(1);
+ 			if (!(p51 = p5->next)) {
+ 				p51 = p5->next = mult(p5,p5);
+ 				p51->next = 0;
+ 				}
+ 			FREE_DTOA_LOCK(1);
 -#else
- 			p51 = p5->next = mult(p5,p5);
- 			p51->next = 0;
+-			p51 = p5->next = mult(p5,p5);
+-			p51->next = 0;
 -#endif
  			}
  		p5 = p51;
  		}
-@@ -1027,7 +802,7 @@ lshift
+@@ -1027,7 +817,7 @@ lshift
  			z = *x++ >> k1;
  			}
  			while(x < xe);
@@ -820,7 +808,7 @@
  			++n1;
  		}
  #else
-@@ -1095,15 +870,11 @@ diff
+@@ -1095,15 +885,11 @@ diff
  {
  	Bigint *c;
  	int i, wa, wb;
@@ -838,7 +826,7 @@
  
  	i = cmp(a,b);
  	if (!i) {
-@@ -1130,49 +901,41 @@ diff
+@@ -1130,49 +916,41 @@ diff
  	xbe = xb + wb;
  	xc = c->x;
  	borrow = 0;
@@ -906,7 +894,7 @@
  	while(!*--xc)
  		wa--;
  	c->wds = wa;
-@@ -1182,26 +945,25 @@ diff
+@@ -1182,26 +960,25 @@ diff
   static double
  ulp
  #ifdef KR_headers
@@ -938,7 +926,7 @@
  #ifndef Sudden_Underflow
  		}
  	else {
-@@ -1217,8 +979,7 @@ ulp
+@@ -1217,8 +994,7 @@ ulp
  			}
  		}
  #endif
@@ -948,7 +936,7 @@
  	}
  
   static double
-@@ -1231,7 +992,7 @@ b2d
+@@ -1231,7 +1007,7 @@ b2d
  {
  	ULong *xa, *xa0, w, y, z;
  	int k;
@@ -957,7 +945,7 @@
  #ifdef VAX
  	ULong d0, d1;
  #else
-@@ -1288,25 +1049,27 @@ b2d
+@@ -1288,25 +1064,27 @@ b2d
  #undef d0
  #undef d1
  #endif
@@ -992,7 +980,7 @@
  	d0 = word0(d) >> 16 | word0(d) << 16;
  	d1 = word1(d) >> 16 | word1(d) << 16;
  #else
-@@ -1340,10 +1103,7 @@ d2b
+@@ -1340,10 +1118,7 @@ d2b
  			}
  		else
  			x[0] = y;
@@ -1004,7 +992,7 @@
  		}
  	else {
  #ifdef DEBUG
-@@ -1352,10 +1112,7 @@ d2b
+@@ -1352,10 +1127,7 @@ d2b
  #endif
  		k = lo0bits(&z);
  		x[0] = z;
@@ -1016,7 +1004,7 @@
  		k += 32;
  		}
  #else
-@@ -1437,11 +1194,11 @@ ratio
+@@ -1437,11 +1209,11 @@ ratio
  	(Bigint *a, Bigint *b)
  #endif
  {
@@ -1031,7 +1019,7 @@
  #ifdef Pack_32
  	k = ka - kb + 32*(a->wds - b->wds);
  #else
-@@ -1451,13 +1208,13 @@ ratio
+@@ -1451,13 +1223,13 @@ ratio
  	if (k > 0) {
  		word0(da) += (k >> 2)*Exp_msk1;
  		if (k &= 3)
@@ -1047,7 +1035,7 @@
  		}
  #else
  	if (k > 0)
-@@ -1467,10 +1224,10 @@ ratio
+@@ -1467,10 +1239,10 @@ ratio
  		word0(db) += k*Exp_msk1;
  		}
  #endif
@@ -1060,7 +1048,7 @@
  tens[] = {
  		1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9,
  		1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19,
-@@ -1480,124 +1237,23 @@ tens[] = {
+@@ -1480,124 +1252,23 @@ tens[] = {
  #endif
  		};
  
@@ -1190,7 +1178,7 @@
  PR_strtod
  #ifdef KR_headers
  	(s00, se) CONST char *s00; char **se;
-@@ -1605,51 +1261,40 @@ PR_strtod
+@@ -1605,51 +1276,40 @@ PR_strtod
  	(CONST char *s00, char **se)
  #endif
  {
@@ -1267,7 +1255,7 @@
  	if (*s == '0') {
  		nz0 = 1;
  		while(*++s == '0') ;
-@@ -1664,26 +1309,7 @@ PR_strtod
+@@ -1664,26 +1324,7 @@ PR_strtod
  		else if (nd < 16)
  			z = 10*z + c - '0';
  	nd0 = nd;
@@ -1295,7 +1283,7 @@
  		c = *++s;
  		if (!nd) {
  			for(; c == '0'; c = *++s)
-@@ -1718,7 +1344,8 @@ PR_strtod
+@@ -1718,7 +1359,8 @@ PR_strtod
  	e = 0;
  	if (c == 'e' || c == 'E') {
  		if (!nd && !nz && !nz0) {
@@ -1305,7 +1293,7 @@
  			}
  		s00 = s;
  		esign = 0;
-@@ -1753,38 +1380,8 @@ PR_strtod
+@@ -1753,38 +1395,8 @@ PR_strtod
  			s = s00;
  		}
  	if (!nd) {
@@ -1345,7 +1333,7 @@
  		goto ret;
  		}
  	e1 = e -= nf;
-@@ -1797,21 +1394,14 @@ PR_strtod
+@@ -1797,21 +1409,14 @@ PR_strtod
  	if (!nd0)
  		nd0 = nd;
  	k = nd < DBL_DIG + 1 ? nd : DBL_DIG + 1;
@@ -1371,7 +1359,7 @@
  			) {
  		if (!e)
  			goto ret;
-@@ -1820,14 +1410,8 @@ PR_strtod
+@@ -1820,14 +1425,8 @@ PR_strtod
  #ifdef VAX
  				goto vax_ovfl_check;
  #else
@@ -1388,7 +1376,7 @@
  				goto ret;
  #endif
  				}
-@@ -1836,184 +1420,115 @@ PR_strtod
+@@ -1836,184 +1435,115 @@ PR_strtod
  				/* A fancier test would sometimes let us do
  				 * this for larger i values.
  				 */
@@ -1619,7 +1607,7 @@
  			}
  		}
  
-@@ -2026,7 +1541,7 @@ PR_strtod
+@@ -2026,7 +1556,7 @@ PR_strtod
  	for(;;) {
  		bd = Balloc(bd0->k);
  		Bcopy(bd, bd0);
@@ -1628,7 +1616,7 @@
  		bs = i2b(1);
  
  		if (e >= 0) {
-@@ -2042,38 +1557,21 @@ PR_strtod
+@@ -2042,38 +1572,21 @@ PR_strtod
  		else
  			bd2 -= bbe;
  		bs2 = bb2;
@@ -1671,7 +1659,7 @@
  		i = bb2 < bd2 ? bb2 : bd2;
  		if (i > bs2)
  			i = bs2;
-@@ -2100,123 +1598,12 @@ PR_strtod
+@@ -2100,123 +1613,12 @@ PR_strtod
  		dsign = delta->sign;
  		delta->sign = 0;
  		i = cmp(delta, bs);
@@ -1796,7 +1784,7 @@
  			delta = lshift(delta,Log2P);
  			if (cmp(delta, bs) > 0)
  				goto drop_down;
-@@ -2226,12 +1613,7 @@ PR_strtod
+@@ -2226,12 +1628,7 @@ PR_strtod
  			/* exactly half-way between */
  			if (dsign) {
  				if ((word0(rv) & Bndry_mask1) == Bndry_mask1
@@ -1810,7 +1798,7 @@
  					/*boundary case -- increment exponent*/
  					word0(rv) = (word0(rv) & Exp_mask)
  						+ Exp_msk1
-@@ -2240,44 +1622,24 @@ PR_strtod
+@@ -2240,44 +1637,24 @@ PR_strtod
  #endif
  						;
  					word1(rv) = 0;
@@ -1859,7 +1847,7 @@
  				word0(rv) = L | Bndry_mask1;
  				word1(rv) = 0xffffffff;
  #ifdef IBM
-@@ -2291,19 +1653,16 @@ PR_strtod
+@@ -2291,19 +1668,16 @@ PR_strtod
  				break;
  #endif
  			if (dsign)
@@ -1882,7 +1870,7 @@
  			break;
  			}
  		if ((aadj = ratio(delta, bs)) <= 2.) {
-@@ -2332,7 +1691,7 @@ PR_strtod
+@@ -2332,7 +1706,7 @@ PR_strtod
  			aadj *= 0.5;
  			aadj1 = dsign ? aadj : -aadj;
  #ifdef Check_FLT_ROUNDS
@@ -1891,7 +1879,7 @@
  				case 2: /* towards +infinity */
  					aadj1 -= 0.5;
  					break;
-@@ -2341,19 +1700,19 @@ PR_strtod
+@@ -2341,19 +1715,19 @@ PR_strtod
  					aadj1 += 0.5;
  				}
  #else
@@ -1916,7 +1904,7 @@
  			if ((word0(rv) & Exp_mask) >=
  					Exp_msk1*(DBL_MAX_EXP+Bias-P)) {
  				if (word0(rv0) == Big0 && word1(rv0) == Big1)
-@@ -2366,25 +1725,12 @@ PR_strtod
+@@ -2366,25 +1740,12 @@ PR_strtod
  				word0(rv) += P*Exp_msk1;
  			}
  		else {
@@ -1945,7 +1933,7 @@
  #ifdef IBM
  				if ((word0(rv) & Exp_mask) <  P*Exp_msk1)
  #else
-@@ -2402,10 +1748,10 @@ PR_strtod
+@@ -2402,10 +1763,10 @@ PR_strtod
  					word0(rv) -= P*Exp_msk1;
  				}
  			else {
@@ -1959,7 +1947,7 @@
  			/* Compute adj so that the IEEE rounding rules will
  			 * correctly round rv + adj in some half-way cases.
  			 * If rv * ulp(rv) is denormalized (i.e.,
-@@ -2413,24 +1759,19 @@ PR_strtod
+@@ -2413,24 +1774,19 @@ PR_strtod
  			 * trouble from bits lost to denormalization;
  			 * example: 1.2e-307 .
  			 */
@@ -1989,7 +1977,7 @@
  			aadj -= L;
  			/* The tolerances below are conservative. */
  			if (dsign || word1(rv) || word0(rv) & Bndry_mask) {
-@@ -2440,43 +1781,12 @@ PR_strtod
+@@ -2440,43 +1796,12 @@ PR_strtod
  			else if (aadj < .4999999/FLT_RADIX)
  				break;
  			}
@@ -2033,7 +2021,7 @@
   retfree:
  	Bfree(bb);
  	Bfree(bd);
-@@ -2486,7 +1796,7 @@ PR_strtod
+@@ -2486,7 +1811,7 @@ PR_strtod
   ret:
  	if (se)
  		*se = (char *)s;
@@ -2042,7 +2030,7 @@
  	}
  
   static int
-@@ -2498,15 +1808,13 @@ quorem
+@@ -2498,15 +1823,13 @@ quorem
  #endif
  {
  	int n;
@@ -2063,7 +2051,7 @@
  
  	n = S->wds;
  #ifdef DEBUG
-@@ -2528,31 +1836,26 @@ quorem
+@@ -2528,31 +1851,26 @@ quorem
  		borrow = 0;
  		carry = 0;
  		do {
@@ -2104,7 +2092,7 @@
  			}
  			while(sx <= sxe);
  		if (!*bxe) {
-@@ -2569,31 +1872,26 @@ quorem
+@@ -2569,31 +1887,26 @@ quorem
  		bx = b->x;
  		sx = S->x;
  		do {
@@ -2145,7 +2133,7 @@
  			}
  			while(sx <= sxe);
  		bx = b->x;
-@@ -2607,49 +1905,6 @@ quorem
+@@ -2607,75 +1920,10 @@ quorem
  	return q;
  	}
  
@@ -2192,28 +2180,28 @@
 -	return rv;
 -	}
 -
- /* freedtoa(s) must be used to free values s returned by dtoa
-  * when MULTIPLE_THREADS is #defined.  It should be used in all cases,
-  * but for consistency with earlier versions of dtoa, it is optional
-@@ -2663,19 +1918,19 @@ freedtoa(s) char *s;
- freedtoa(char *s)
- #endif
- {
+-/* freedtoa(s) must be used to free values s returned by dtoa
+- * when MULTIPLE_THREADS is #defined.  It should be used in all cases,
+- * but for consistency with earlier versions of dtoa, it is optional
+- * when MULTIPLE_THREADS is not defined.
+- */
+-
+- void
+-#ifdef KR_headers
+-freedtoa(s) char *s;
+-#else
+-freedtoa(char *s)
+-#endif
+-{
 -	Bigint *b = (Bigint *)((int *)s - 1);
 -	b->maxwds = 1 << (b->k = *(int*)b);
 -	Bfree(b);
-+        Bigint *b = (Bigint *)((int *)s - 1);
-+        b->maxwds = 1 << (b->k = *(int*)b);
-+        Bfree(b);
- #ifndef MULTIPLE_THREADS
+-#ifndef MULTIPLE_THREADS
 -	if (s == dtoa_result)
 -		dtoa_result = 0;
-+        if (s == dtoa_result)
-+                dtoa_result = 0;
- #endif
+-#endif
 -	}
-+        }
- 
+-
  /* dtoa for IEEE arithmetic (dmg): convert double to ASCII string.
   *
   * Inspired by "How to Print Floating-Point Numbers Accurately" by
@@ -2222,7 +2210,7 @@
   *
   * Modifications:
   *	1. Rather than iterating, we use a simple numeric overestimate
-@@ -2706,13 +1961,13 @@ freedtoa(char *s)
+@@ -2706,13 +1954,13 @@ freedtoa(char *s)
   *	   calculation.
   */
  
@@ -2240,7 +2228,7 @@
  #endif
  {
   /*	Arguments ndigits, decpt, sign are similar to those
-@@ -2734,14 +1989,14 @@ dtoa
+@@ -2734,14 +1982,14 @@ dtoa
  			gives a return value similar to that from fcvt,
  			except that trailing zeros are suppressed, and
  			ndigits can be negative.
@@ -2263,7 +2251,7 @@
  
  		Values of mode other than 0-9 are treated as mode 0.
  
-@@ -2758,21 +2013,19 @@ dtoa
+@@ -2758,21 +2006,19 @@ dtoa
  	ULong x;
  #endif
  	Bigint *b, *b1, *delta, *mlo, *mhi, *S;
@@ -2295,7 +2283,7 @@
  
  	if (word0(d) & Sign_bit) {
  		/* set sign for everything, including 0's and NaNs */
-@@ -2791,47 +2044,43 @@ dtoa
+@@ -2791,47 +2037,43 @@ dtoa
  		{
  		/* Infinity or NaN */
  		*decpt = 9999;
@@ -2362,7 +2350,7 @@
  #endif
  
  		/* log(x)	~=~ log(1.5) + (x-1.5)/1.5
-@@ -2870,19 +2119,20 @@ dtoa
+@@ -2870,19 +2112,20 @@ dtoa
  		i = bbits + be + (Bias + (P-1) - 1);
  		x = i > 32  ? word0(d) << 64 - i | word1(d) >> i - 32
  			    : word1(d) << 32 - i;
@@ -2386,7 +2374,7 @@
  			k--;
  		k_check = 0;
  		}
-@@ -2907,15 +2157,7 @@ dtoa
+@@ -2907,15 +2150,7 @@ dtoa
  		}
  	if (mode < 0 || mode > 9)
  		mode = 0;
@@ -2402,7 +2390,7 @@
  	if (mode > 5) {
  		mode -= 4;
  		try_quick = 0;
-@@ -2946,19 +2188,18 @@ dtoa
+@@ -2946,19 +2181,18 @@ dtoa
  			if (i <= 0)
  				i = 1;
  		}
@@ -2428,7 +2416,7 @@
  		k0 = k;
  		ilim0 = ilim;
  		ieps = 2; /* conservative */
-@@ -2968,7 +2209,7 @@ dtoa
+@@ -2968,7 +2202,7 @@ dtoa
  			if (j & Bletch) {
  				/* prevent overflows */
  				j &= Bletch - 1;
@@ -2437,7 +2425,7 @@
  				ieps++;
  				}
  			for(; j; j >>= 1, i++)
-@@ -2976,32 +2217,32 @@ dtoa
+@@ -2976,32 +2210,32 @@ dtoa
  					ieps++;
  					ds *= bigtens[i];
  					}
@@ -2479,7 +2467,7 @@
  				goto no_digits;
  			goto fast_failed;
  			}
-@@ -3010,34 +2251,33 @@ dtoa
+@@ -3010,34 +2244,33 @@ dtoa
  			/* Use Steele & White method of only
  			 * generating digits needed.
  			 */
@@ -2527,7 +2515,7 @@
  						while(*--s == '0');
  						s++;
  						goto ret1;
-@@ -3050,7 +2290,7 @@ dtoa
+@@ -3050,7 +2283,7 @@ dtoa
  #endif
   fast_failed:
  		s = s0;
@@ -2536,7 +2524,7 @@
  		k = k0;
  		ilim = ilim0;
  		}
-@@ -3062,37 +2302,24 @@ dtoa
+@@ -3062,37 +2295,24 @@ dtoa
  		ds = tens[k];
  		if (ndigits < 0 && ilim <= 0) {
  			S = mhi = 0;
@@ -2582,7 +2570,7 @@
   bump_up:
  					while(*--s == '9')
  						if (s == s0) {
-@@ -3104,6 +2331,8 @@ dtoa
+@@ -3104,6 +2324,8 @@ dtoa
  					}
  				break;
  				}
@@ -2591,7 +2579,7 @@
  			}
  		goto ret1;
  		}
-@@ -3112,15 +2341,31 @@ dtoa
+@@ -3112,15 +2334,31 @@ dtoa
  	m5 = b5;
  	mhi = mlo = 0;
  	if (leftright) {
@@ -2627,7 +2615,7 @@
  		b2 += i;
  		s2 += i;
  		mhi = i2b(1);
-@@ -3151,15 +2396,10 @@ dtoa
+@@ -3151,15 +2389,10 @@ dtoa
  
  	/* Check for special case that d is a normalized power of 2. */
  
@@ -2645,7 +2633,7 @@
  #endif
  				) {
  			/* The special case */
-@@ -3167,6 +2407,8 @@ dtoa
+@@ -3167,6 +2400,8 @@ dtoa
  			s2 += Log2P;
  			spec_case = 1;
  			}
@@ -2654,7 +2642,7 @@
  		}
  
  	/* Arrange for convenient computation of quotients:
-@@ -3208,7 +2450,7 @@ dtoa
+@@ -3208,7 +2443,7 @@ dtoa
  			ilim = ilim1;
  			}
  		}
@@ -2663,7 +2651,7 @@
  		if (ilim < 0 || cmp(b,S = multadd(S,5,0)) <= 0) {
  			/* no digits, fcvt style */
   no_digits:
-@@ -3245,41 +2487,20 @@ dtoa
+@@ -3245,41 +2480,20 @@ dtoa
  			j1 = delta->sign ? 1 : cmp(b, delta);
  			Bfree(delta);
  #ifndef ROUND_BIASED
@@ -2707,7 +2695,7 @@
  				if (j1 > 0) {
  					b = lshift(b, 1);
  					j1 = cmp(b, S);
-@@ -3287,15 +2508,10 @@ dtoa
+@@ -3287,15 +2501,10 @@ dtoa
  					&& dig++ == '9')
  						goto round_9_up;
  					}
@@ -2723,7 +2711,7 @@
  				if (dig == '9') { /* possible if i == 1 */
   round_9_up:
  					*s++ = '9';
-@@ -3304,9 +2520,6 @@ dtoa
+@@ -3304,9 +2513,6 @@ dtoa
  				*s++ = dig + 1;
  				goto ret;
  				}
@@ -2733,7 +2721,7 @@
  			*s++ = dig;
  			if (i == ilim)
  				break;
-@@ -3322,12 +2535,6 @@ dtoa
+@@ -3322,12 +2528,6 @@ dtoa
  	else
  		for(i = 1;; i++) {
  			*s++ = dig = quorem(b,S) + '0';
@@ -2746,7 +2734,7 @@
  			if (i >= ilim)
  				break;
  			b = multadd(b, 10, 0);
-@@ -3335,12 +2542,6 @@ dtoa
+@@ -3335,12 +2535,6 @@ dtoa
  
  	/* Round off last digit */
  
@@ -2759,7 +2747,7 @@
  	b = lshift(b, 1);
  	j = cmp(b, S);
  	if (j > 0 || j == 0 && dig & 1) {
-@@ -3354,7 +2555,6 @@ dtoa
+@@ -3354,7 +2548,6 @@ dtoa
  		++*s++;
  		}
  	else {
@@ -2767,7 +2755,7 @@
  		while(*--s == '0');
  		s++;
  		}
-@@ -3366,18 +2566,11 @@ dtoa
+@@ -3366,18 +2559,11 @@ dtoa
  		Bfree(mhi);
  		}
   ret1:
@@ -2790,3 +2778,23 @@
  	*s = 0;
  	*decpt = k + 1;
  	if (rve)
+@@ -3402,8 +2588,10 @@ PR_dtoa(PRFloat64 d, PRIntn mode, PRIntn
+         PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
+         return rv;
+     }
++    ACQUIRE_DTOA_LOCK(2);
+     result = dtoa(d, mode, ndigits, decpt, sign, rve);
+     if (!result) {
++	FREE_DTOA_LOCK(2);
+         PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
+         return rv;
+     }
+@@ -3417,7 +2605,7 @@ PR_dtoa(PRFloat64 d, PRIntn mode, PRIntn
+         }
+         rv = PR_SUCCESS;
+     }
+-    freedtoa(result);
++    FREE_DTOA_LOCK(2);
+     return rv;  
+ }
+ 

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