1 files changed, 47 insertions, 0 deletions
diff --git a/debian/patches/no-brk-caching.diff b/debian/patches/no-brk-caching.diff
new file mode 100644
index 0000000..dc4ba85
--- /dev/null
+++ b/debian/patches/no-brk-caching.diff
@@ -0,0 +1,47 @@
+# DP: Don't cache the value of brk between sbrk calls.
+
+--- a/lib/malloc/malloc.c
++++ b/lib/malloc/malloc.c
+@@ -227,8 +227,6 @@
+ static int pagebucket;	/* bucket for requests a page in size */
+ static int maxbuck;	/* highest bucket receiving allocation request. */
+ 
+-static char *memtop;	/* top of heap */
+-
+ static const unsigned long binsizes[NBUCKETS] = {
+ 	8UL, 16UL, 32UL, 64UL, 128UL, 256UL, 512UL, 1024UL, 2048UL, 4096UL,
+ 	8192UL, 16384UL, 32768UL, 65536UL, 131072UL, 262144UL, 524288UL,
+@@ -538,7 +536,6 @@
+   siz = binsize (nu);
+   /* Should check for errors here, I guess. */
+   sbrk (-siz);
+-  memtop -= siz;
+ 
+ #ifdef MALLOC_STATS
+   _mstats.nsbrk++;
+@@ -633,8 +630,6 @@
+   if ((long)mp == -1)
+     goto morecore_done;
+ 
+-  memtop += sbrk_amt;
+-
+   /* shouldn't happen, but just in case -- require 8-byte alignment */
+   if ((long)mp & MALIGN_MASK)
+     {
+@@ -684,7 +679,7 @@
+      Some of this partial page will be wasted space, but we'll use as
+      much as we can.  Once we figure out how much to advance the break
+      pointer, go ahead and do it. */
+-  memtop = curbrk = sbrk (0);
++  curbrk = sbrk (0);
+   sbrk_needed = pagesz - ((long)curbrk & (pagesz - 1));	/* sbrk(0) % pagesz */
+   if (sbrk_needed < 0)
+     sbrk_needed += pagesz;
+@@ -699,7 +694,6 @@
+       curbrk = sbrk (sbrk_needed);
+       if ((long)curbrk == -1)
+ 	return -1;
+-      memtop += sbrk_needed;
+ 
+       /* Take the memory which would otherwise be wasted and populate the most
+ 	 popular bin (2 == 32 bytes) with it.  Add whatever we need to curbrk