toolchain/uClibc: push some upstream patches for uClibc-0.9.31. should resolve isses of #8269

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24029 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 33 insertions, 0 deletions

diff --git a/toolchain/uClibc/patches-0.9.31/000-upstream-calloc_return_zeroed_memory.patch b/toolchain/uClibc/patches-0.9.31/000-upstream-calloc_return_zeroed_memory.patch
new file mode 100644
index 0000000000..b0715058da
--- /dev/null
+++ b/toolchain/uClibc/patches-0.9.31/000-upstream-calloc_return_zeroed_memory.patch
@@ -0,0 +1,33 @@
+From afd7606ca42a2586b8823c7bd1a4a7cfd2476e3b Mon Sep 17 00:00:00 2001
+From: Steven J. Magnani <steve@digidescorp.com>
+Date: Wed, 09 Jun 2010 14:02:21 +0000
+Subject: malloc-simple: Make calloc() return zeroed memory
+
+The 0.9.31 release included a change to malloc-simple to request
+uninitialized memory from noMMU kernels. Unfortunately, the corresponding
+calloc() code assumed that memory returned by malloc() was already zeroed,
+which leads to all kinds of nastiness.
+
+Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
+Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
+---
+diff --git a/libc/stdlib/malloc-simple/alloc.c b/libc/stdlib/malloc-simple/alloc.c
+index 51da14a..914c89d 100644
+--- a/libc/stdlib/malloc-simple/alloc.c
++++ b/libc/stdlib/malloc-simple/alloc.c
+@@ -60,11 +60,10 @@ void * calloc(size_t nmemb, size_t lsize)
+ 		__set_errno(ENOMEM);
+ 		return NULL;
+ 	}
+-	result=malloc(size);
+-#if 0
+-	/* Standard unix mmap using /dev/zero clears memory so calloc
+-	 * doesn't need to actually zero anything....
+-	 */
++	result = malloc(size);
++
++#ifndef __ARCH_USE_MMU__
++	/* mmap'd with MAP_UNINITIALIZE, we have to blank memory ourselves */
+ 	if (result != NULL) {
+ 		memset(result, 0, size);
+ 	}