X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=common%2Fdlmalloc.c;h=2276532da7a8441c500c39b1716e23a2806a8c21;hb=000b6dc6edfcb83c4fff9376f9a2a4af67f3fc83;hp=735b3443e63a556e0af9dbd63f3def0286f85a0a;hpb=bb3bcfa2426cc6a0aecec7270e3ee67ca843a125;p=oweals%2Fu-boot.git

diff --git a/common/dlmalloc.c b/common/dlmalloc.c
index 735b3443e6..2276532da7 100644
--- a/common/dlmalloc.c
+++ b/common/dlmalloc.c
@@ -1515,7 +1515,7 @@ void *sbrk(ptrdiff_t increment)
 	ulong new = old + increment;
 
 	if ((new < mem_malloc_start) || (new > mem_malloc_end))
-		return NULL;
+		return (void *)MORECORE_FAILURE;
 
 	mem_malloc_brk = new;
 
@@ -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; */