Fix VirtualQuery rejecting unallocated blocks

it looks like get_free_mem_state_callback sees blocks before the exe base address as overlapping the exe base from calculating the block end address as block start address + size, ie a 256 byte block starting at 0x100 would "end" at 0x200 (Source of patch https://github.com/hdmap/wine-hackery/tree/master/f4se ) This change would be the more important one of two changes which would solve the following issue for proton: ValveSoftware/Proton#1069
Rabcor · Oct 13, 2018 · 378b111 · 378b111 · Rabcor · Oct 15, 2018
1 parent 266d11a
commit 378b111
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/dlls/ntdll/virtual.c b/dlls/ntdll/virtual.c
@@ -2750,7 +2750,7 @@ static int get_free_mem_state_callback( void *start, size_t size, void *arg )
     MEMORY_BASIC_INFORMATION *info = arg;
     void *end = (char *)start + size;
 
-    if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
+    if ((char *)info->BaseAddress + info->RegionSize <= (char *)start) return 0;
 
     if (info->BaseAddress >= end)
     {