[Python-checkins] r71682 - python/branches/py3k-short-float-repr/Python/dtoa.c

Fri Apr 17 18:00:30 CEST 2009

Author: mark.dickinson
Date: Fri Apr 17 18:00:30 2009
New Revision: 71682
Log:
Fix bug in memory allocation mechanism for dtoa.c
Modified:
 python/branches/py3k-short-float-repr/Python/dtoa.c
Modified: python/branches/py3k-short-float-repr/Python/dtoa.c
==============================================================================

--- python/branches/py3k-short-float-repr/Python/dtoa.c	(original)
+++ python/branches/py3k-short-float-repr/Python/dtoa.c	Fri Apr 17 18:00:30 2009
@@ -57,6 +57,10 @@
 * 5. The code has been reformatted to better fit with Python's
 * C style guide (PEP 7).
 *
+ * 6. A bug in the memory allocation has been fixed: to avoid FREEing memory
+ * that hasn't been MALLOC'ed, private_mem should only be used when k <=
+ * Kmax.
+ *
 ***************************************************************/
 
 /* Please send bug reports for the original dtoa.c code to David M. Gay (dmg
@@ -346,7 +350,7 @@
 x = 1 << k;
 len = (sizeof(Bigint) + (x-1)*sizeof(ULong) + sizeof(double) - 1)
 /sizeof(double);
- if (pmem_next - private_mem + len <= PRIVATE_mem) {
+ if (k <= Kmax && pmem_next - private_mem + len <= PRIVATE_mem) {
 rv = (Bigint*)pmem_next;
 pmem_next += len;
 }
