When malloc() was called before it was properly initialized
(as would happen if when used before relocation to RAM) it returned
random, non-NULL values, which called all kinds of difficult to debug
subsequent errors.
Make sure to return NULL when initialization was not done yet.
Signed-off-by: Wolfgang Denk <w...@denx.de>
---
common/dlmalloc.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/common/dlmalloc.c b/common/dlmalloc.c
index 735b344..e7a998f 100644
--- a/common/dlmalloc.c
+++ b/common/dlmalloc.c
@@ -2179,6 +2179,12 @@ Void_t* mALLOc(bytes) size_t bytes;
INTERNAL_SIZE_T nb;
+ /* check if mem_malloc_init() was run */
+ if ((mem_malloc_start == 0) && (mem_malloc_end ==0)) {
+ /* not initialized yet */
+ return 0;
+ }
+
if ((long)bytes < 0) return 0;
nb = request2size(bytes); /* padded request size; */
--
1.6.2.5
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
