Remove freelists managed by Balloc/Bfree.

Change __dtoa to not free the string it allocated the previous time it was
called.  The caller now frees the string after usage if appropiate.

PR:		15070
Reviewed by:	deischen

1 files changed, 12 insertions, 33 deletions

diff --git a/lib/libc/stdlib/netbsd_strtod.c b/lib/libc/stdlib/netbsd_strtod.c
index a402b68..b48f827 100644
--- a/lib/libc/stdlib/netbsd_strtod.c
+++ b/lib/libc/stdlib/netbsd_strtod.c
@@ -142,7 +142,7 @@ __RCSID("$NetBSD: strtod.c,v 1.26 1998/02/03 18:44:21 perry Exp $");
 #include "memory.h"
 #endif
 #endif
-char *__dtoa __P((double, int, int, int *, int *, char **));
+char *__dtoa __P((double, int, int, int *, int *, char **, char **));
 
 #ifdef MALLOC
 #ifdef KR_headers
@@ -382,8 +382,6 @@ Bigint {
 
  typedef struct Bigint Bigint;
 
- static Bigint *freelist[Kmax+1];
-
  static Bigint *
 Balloc
 #ifdef KR_headers
@@ -395,15 +393,10 @@ Balloc
 	int x;
 	Bigint *rv;
 
-	if ((rv = freelist[k]) != NULL) {
-		freelist[k] = rv->next;
-		}
-	else {
-		x = 1 << k;
-		rv = (Bigint *)MALLOC(sizeof(Bigint) + (x-1)*sizeof(Long));
-		rv->k = k;
-		rv->maxwds = x;
-		}
+	x = 1 << k;
+	rv = (Bigint *)MALLOC(sizeof(Bigint) + (x-1)*sizeof(Long));
+	rv->k = k;
+	rv->maxwds = x;
 	rv->sign = rv->wds = 0;
 	return rv;
 	}
@@ -416,10 +409,7 @@ Bfree
 	(Bigint *v)
 #endif
 {
-	if (v) {
-		v->next = freelist[v->k];
-		freelist[v->k] = v;
-		}
+	free(v);
 	}
 
 #define Bcopy(x,y) memcpy((char *)&x->sign, (char *)&y->sign, \
@@ -1900,10 +1890,11 @@ quorem
  char *
 __dtoa
 #ifdef KR_headers
-	(d, mode, ndigits, decpt, sign, rve)
-	double d; int mode, ndigits, *decpt, *sign; char **rve;
+	(d, mode, ndigits, decpt, sign, rve, resultp)
+	double d; int mode, ndigits, *decpt, *sign; char **rve, **resultp;
 #else
-	(double d, int mode, int ndigits, int *decpt, int *sign, char **rve)
+	(double d, int mode, int ndigits, int *decpt, int *sign, char **rve,
+	 char **resultp)
 #endif
 {
  /*	Arguments ndigits, decpt, sign are similar to those
@@ -1953,15 +1944,6 @@ __dtoa
 	Bigint *mlo = NULL; /* pacify gcc */
 	double d2, ds, eps;
 	char *s, *s0;
-	static Bigint *result;
-	static int result_k;
-
-	if (result) {
-		result->k = result_k;
-		result->maxwds = 1 << result_k;
-		Bfree(result);
-		result = 0;
-		}
 
 	if (word0(d) & Sign_bit) {
 		/* set sign for everything, including 0's and NaNs */
@@ -2123,11 +2105,8 @@ __dtoa
 			if (i <= 0)
 				i = 1;
 		}
-	j = sizeof(ULong);
-	for(result_k = 0; sizeof(Bigint) - sizeof(ULong) + j <= i;
-		j <<= 1) result_k++;
-	result = Balloc(result_k);
-	s = s0 = (char *)result;
+	*resultp = (char *) malloc(i + 1);
+	s = s0 = *resultp;
 
 	if (ilim >= 0 && ilim <= Quick_max && try_quick) {