From 9a41e59c1fd927a66e57f4cdf5e17a84068d0e58 Mon Sep 17 00:00:00 2001
From: Steven Wu <stevenwu@apple.com>
Date: Thu, 2 Feb 2017 00:00:13 +0000
Subject: [PATCH] [dsymutil] Fix __LINKEDIT vmsize in dsymutil upgrade path

Summary:
dsymutil upgrade path can change the size of segment and it needs to update
the vmsize of the segment to reflect the size change.

rdar://problem/30290714

Reviewers: friss

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D29433

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293842 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/dsymutil/MachOUtils.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/dsymutil/MachOUtils.cpp b/tools/dsymutil/MachOUtils.cpp
index 8a730a1d0c8a..c1422f6eaab5 100644
--- a/tools/dsymutil/MachOUtils.cpp
+++ b/tools/dsymutil/MachOUtils.cpp
@@ -236,6 +236,8 @@ static void transferSegmentAndSections(
   if (StringRef("__LINKEDIT") == Segment.segname) {
     Segment.fileoff = LinkeditOffset;
     Segment.filesize = LinkeditSize;
+    // Resize vmsize by rounding to the page size.
+    Segment.vmsize = alignTo(LinkeditSize, 0x1000);
   }
 
   // Check if the end address of the last segment and our current