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[llvm-nm][MachO] Don't call getFlags on redacted symbols #2192

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Merged
merged 1 commit into from
Dec 5, 2020

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francisvm
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Avoid calling getFlags on a non-existent symbol.

The way this is triggered is by calling strip -N on a binary, which sets
the MH_NLIST_OUTOFSYNC_WITH_DYLDINFO header flag. Then, in the
LC_FUNCTION_STARTS command, nm is trying to print the stripped symbols
and needs the proper checks.

(cherry picked from commit 3d381a7)

rdar://71242773

Avoid calling getFlags on a non-existent symbol.

The way this is triggered is by calling strip -N on a binary, which sets
the MH_NLIST_OUTOFSYNC_WITH_DYLDINFO header flag. Then, in the
LC_FUNCTION_STARTS command, nm is trying to print the stripped symbols
and needs the proper checks.

(cherry picked from commit 3d381a7)

rdar://71242773
@francisvm
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@swift-ci please test

@francisvm francisvm merged commit b66205e into apple/stable/20200714 Dec 5, 2020
@francisvm francisvm deleted the PR-71242773 branch May 31, 2023 22:54
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