tree 313be71183ccb3ce30227d918a1ec27d3642b8b5
parent 65330f394b2c5ede01acb97a84112c3cc0127c46
author Georgy Komarov <jubnzv@gmail.com> 1593587739 +0300
committer Georgy Komarov <jubnzv@gmail.com> 1593915240 +0300
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[llvm-objcopy] Fix crash when removing symbol table at same time as adding a symbol

This patch resolves crash that occurs when user wanted to remove all
symbols and add a brand new one using:

```
llvm-objcopy -R .symtab --add-symbol foo=1234 in.o out.o
```

Before these changes the symbol table internally being null when adding
new symbols. For now we will regenerate symtab in this case.

This fixes: https://bugs.llvm.org/show_bug.cgi?id=43930

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D82935