diff options
Diffstat (limited to 'toolchain/uClibc/patches-0.9.31/000-upstream-calloc_return_zeroed_memory.patch')
| -rw-r--r-- | toolchain/uClibc/patches-0.9.31/000-upstream-calloc_return_zeroed_memory.patch | 33 |
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 000000000..b0715058d --- /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); + } |