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Try to fix the buildbot on OSX.

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Since I'm only seeing failures on OSX, and it's saying
permission denied, I'm suspecting this is due to the addition
of the MAP_RESILIENT_CODESIGN and/or MAP_RESILIENT_MEDIA flags.
Speculatively trying to remove those to get the bots working.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295770 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Zachary Turner 2017-02-21 21:31:28 +00:00
parent 83fbeaf3ba
commit 0f341e41e5
1 changed files with 0 additions and 16 deletions
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16
lib/Support/Unix/Path.inc
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@ -536,22 +536,6 @@ std::error_code mapped_file_region::init(int FD, uint64_t Offset,
int flags = (Mode == readwrite) ? MAP_SHARED : MAP_PRIVATE;
int prot = (Mode == readonly) ? PROT_READ : (PROT_READ | PROT_WRITE);
#if defined(__APPLE__)
//----------------------------------------------------------------------
// Newer versions of MacOSX have a flag that will allow us to read from
// binaries whose code signature is invalid without crashing by using
// the MAP_RESILIENT_CODESIGN flag. Also if a file from removable media
// is mapped we can avoid crashing and return zeroes to any pages we try
// to read if the media becomes unavailable by using the
// MAP_RESILIENT_MEDIA flag.
//----------------------------------------------------------------------
#if defined(MAP_RESILIENT_CODESIGN)
flags |= MAP_RESILIENT_CODESIGN;
#endif
#if defined(MAP_RESILIENT_MEDIA)
flags |= MAP_RESILIENT_MEDIA;
#endif
#endif // #if defined (__APPLE__)
Mapping = ::mmap(nullptr, Size, prot, flags, FD, Offset);
if (Mapping == MAP_FAILED)