[PATCH] D138986: [AIX][BigArchive] Treat the archive is empty if the first child member offset is zero

[Digger Lin via Phabricator via llvm-commits]

DiggerLin added a comment.

thanks for  adding a new malform empty archive test case.



================
Comment at: llvm/test/Object/archive-big-malformed-first-member.test:2
+# Test reading an empty archive with first member's offset is not zero.
+# RUN: not llvm-ar tv %p/Inputs/aix-malformed-big-archive.a 2>&1 \
+# RUN:   | grep 'truncated or malformed archive'
----------------
I think you can generate the malform aix-malformed-big-archive.a   with following command in test case ( we do not need llvm/test/Object/Inputs/aix-malformed-big-archive.a)  

```
#RUN:  echo "<bigaf>" > %t.a
#RUN:  echo "0                   0                 123                   0                   0                   0" >> %t.a
#RUN:  %python -c "with open('%t.a', 'r+b') as input: input.truncate(128)"
```


Repository:
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https://reviews.llvm.org/D138986