[PATCH 1/2] msvcrt: Write memory forward in memset.

[Rémi Bernon]

Instead of going backward, which breaks the Linux kernel transparent
huge pages allocation assumptions.

This can be reproduced by calling memset on large, newly allocated,
memory regions.

Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
---
 dlls/msvcrt/string.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/dlls/msvcrt/string.c b/dlls/msvcrt/string.c
index 5655fbfe68a..48d44d3b72e 100644
--- a/dlls/msvcrt/string.c
+++ b/dlls/msvcrt/string.c
@@ -2857,13 +2857,14 @@ void * __cdecl memcpy(void *dst, const void *src, size_t n)
 
 static inline void memset_aligned_32(unsigned char *d, uint64_t v, size_t n)
 {
-    while (n >= 32)
-    {
-        *(uint64_t *)(d + n - 32) = v;
-        *(uint64_t *)(d + n - 24) = v;
-        *(uint64_t *)(d + n - 16) = v;
-        *(uint64_t *)(d + n -  8) = v;
-        n -= 32;
+    unsigned char *end = d + n;
+    while (d < end)
+    {
+        *(uint64_t *)(d + 0) = v;
+        *(uint64_t *)(d + 8) = v;
+        *(uint64_t *)(d + 16) = v;
+        *(uint64_t *)(d + 24) = v;
+        d += 32;
     }
 }
 
-- 
2.33.0