[PATCH] D78799: [llvm-objcopy][MachO] Fix segment's vmsize
Alexander Shaposhnikov via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Apr 24 10:16:01 PDT 2020
alexshap marked an inline comment as done.
alexshap added inline comments.
================
Comment at: llvm/tools/llvm-objcopy/MachO/MachOLayoutBuilder.cpp:161
Sec->Offset = 0;
- VMSize += Sec->Size;
} else {
----------------
@MaskRay: the issue was here. (VMSize += Sec->Size) - this is not correct (and it results in producing a broken binary),
also you can take a look at the newly added test and the comment therein. I've already mentioned in the past reviews that for tests containing sections it's error-prone to modify MachO yaml manually, even removing one seemingly unrelated load command triggers the recalculation of the offsets mentioned inside other load commands + the test is not really large, it's the minimal example which triggers the issue (because of the page alignment). Having a valid binary also enables us to use the existing tools from Xcode to validate / introspect the binary if necessary.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D78799/new/
https://reviews.llvm.org/D78799
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