Following
https://wiki.qemu.org/Contribute/SubmitAPatch#Make_code_motion_patches_easy_to_review:
@@ -1,5 +1,5 @@
---
--- a/linux-user/mmap.c
- if (len == 0)
- goto the_end;
--
+++ b/linux-user/mmap.c
+ if (len == 0) {
+ errno = EINVAL;
+ goto fail;
+ }
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https://bugs.launchpad.net/bugs/1783362
Title:
qemu-user: mmap should return failure (MAP_FAILED, -1) instead of
success (NULL, 0) when len==0
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