commit | e050fac971440e3e08bb82fb921d63d5851ac3bc | [log] [tgz] |
---|---|---|
author | Than McIntosh <thanm@google.com> | Wed Jun 19 13:33:33 2019 -0400 |
committer | Alexander Rakoczy <alex@golang.org> | Mon Jul 08 16:54:28 2019 +0000 |
tree | a3746b4e0f6ad28160d382c5b1f733e2b1b39ac9 | |
parent | 39b533ed6634079a5c4f6a3488f4b01cdab2d833 [diff] |
[release-branch.go1.12] cmd/link: macos: set initial protection of 0 for __DWARF segment For later versions of MacOS, the dynamic loader is more picky about enforcing restrictions on __DWARF MachO load commands/segments, triggering aborts of the form dyld: malformed mach-o image: segment __DWARF has vmsize < filesize for Go programs that use cgo on Darwin. The error is being triggered because the Go linker is setting "vmsize" in the DWARF segment entry to zero as a way to signal that the DWARF doesn't need to be mapped into memory at runtime (which we need to continue to do). This patch changes the initial protection on the __DWARF segment to zero, which dyld seems to be happy with (this is used for other similar non-loadable sections such as __LLVM). Updates #32697 Change-Id: I9a73449c6d26c172f3d70361719943af381f37e6 Reviewed-on: https://go-review.googlesource.com/c/go/+/182958 Run-TryBot: Than McIntosh <thanm@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Reviewed-on: https://go-review.googlesource.com/c/go/+/183397
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