[PATCH 1/2] dbghelp: Ensure a truncated pointer isn't passed to ReadProcessMemory().

[Brendan Shanks]

From: Brendan Shanks

---
 dlls/dbghelp/dbghelp_private.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/dbghelp/dbghelp_private.h b/dlls/dbghelp/dbghelp_private.h
index 1249d02b666..695d234616c 100644
--- a/dlls/dbghelp/dbghelp_private.h
+++ b/dlls/dbghelp/dbghelp_private.h
@@ -599,6 +599,9 @@ struct process

static inline BOOL read_process_memory(const struct process *process, UINT64 addr, void *buf, size_t size)
 {
+    if (addr != (UINT_PTR)addr)
+        return FALSE;
+
     return ReadProcessMemory(process->handle, (void*)(UINT_PTR)addr, buf, size, NULL);
 }