2149cb08d1
A non-alloc note section should not have a PT_NOTE program header. Found while linking ghc (Haskell compiler) with lld on FreeBSD. Haskell emits a .debug-ghc-link-info note section (as the name suggests, it contains link info) as a SHT_NOTE section without SHF_ALLOC set. For this case ld.bfd does not emit a PT_NOTE segment for .debug-ghc-link-info. lld previously emitted a PT_NOTE with p_vaddr = 0 and FreeBSD's rtld segfaulted when trying to parse a note at address 0. LLVM PR: https://llvm.org/pr37361 LLVM review: https://reviews.llvm.org/D46623 PR: 226872 Reviewed by: dim Sponsored by: The FreeBSD Foundation
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