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| author | Jordan Rupprecht <rupprecht@google.com> | 2021-04-07 09:55:20 -0700 |
|---|---|---|
| committer | Jordan Rupprecht <rupprecht@google.com> | 2021-04-07 10:48:47 -0700 |
| commit | f49a4440d38a4123b01ded6493a02b4cbf038928 (patch) | |
| tree | c0b190c1f6fc32133d914d42d9b282e1fc533f43 /llvm/lib/CodeGen/MachineModuleInfo.cpp | |
| parent | f087d7544a4194066506a45eac0524265bfab08d (diff) | |
| download | llvm-f49a4440d38a4123b01ded6493a02b4cbf038928.zip llvm-f49a4440d38a4123b01ded6493a02b4cbf038928.tar.gz llvm-f49a4440d38a4123b01ded6493a02b4cbf038928.tar.bz2 | |
[lldb][Editline] Fix crash when navigating through empty command history.
An empty history entry can happen by entering the expression evaluator an immediately hitting enter:
```
$ lldb
(lldb) e
Enter expressions, then terminate with an empty line to evaluate:
1: <hit enter>
```
The next time the user enters the expression evaluator, if they hit the up arrow to load the previous expression, lldb crashes. This patch treats empty history sessions as a single expression of zero length, instead of an empty list of expressions.
Fixes http://llvm.org/PR49845.
Differential Revision: https://reviews.llvm.org/D100048
Diffstat (limited to 'llvm/lib/CodeGen/MachineModuleInfo.cpp')
0 files changed, 0 insertions, 0 deletions