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-rw-r--r--bsd-user/mmap.c2
-rw-r--r--linux-user/mmap.c2
2 files changed, 4 insertions, 0 deletions
diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c
index 66233abc1..e916a6544 100644
--- a/bsd-user/mmap.c
+++ b/bsd-user/mmap.c
@@ -127,6 +127,8 @@ void *qemu_realloc(void *ptr, size_t size)
size_t old_size, copy;
void *new_ptr;
+ if (!ptr)
+ return qemu_malloc(size);
old_size = *(size_t *)((char *)ptr - 16);
copy = old_size < size ? old_size : size;
new_ptr = qemu_malloc(size);
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index d0fc3e3d1..888b49140 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -128,6 +128,8 @@ void *qemu_realloc(void *ptr, size_t size)
size_t old_size, copy;
void *new_ptr;
+ if (!ptr)
+ return qemu_malloc(size);
old_size = *(size_t *)((char *)ptr - 16);
copy = old_size < size ? old_size : size;
new_ptr = qemu_malloc(size);