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-rw-r--r--winsup/cygwin/mmap.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/winsup/cygwin/mmap.cc b/winsup/cygwin/mmap.cc
index feb9e5d0e..a08d00f83 100644
--- a/winsup/cygwin/mmap.cc
+++ b/winsup/cygwin/mmap.cc
@@ -1144,6 +1144,7 @@ go_ahead:
ends in, but there's nothing at all we can do about that. */
#ifdef __x86_64__
len = roundup2 (len, wincap.allocation_granularity ());
+ orig_len = roundup2 (orig_len, wincap.allocation_granularity ());
#else
len = roundup2 (len, wincap.is_wow64 () ? wincap.allocation_granularity ()
: wincap.page_size ());