Jonas Devlieghere 4dd3dfe8e3 [lldb/Python] Fix the infinitely looping Python prompt bug
Executing commands below will get you bombarded by a wall of Python
command prompts (>>> ).

$ echo 'foo' | ./bin/lldb -o script
$ cat /tmp/script
script
print("foo")
$ lldb --source /tmp/script

The issue is that our custom input reader doesn't handle EOF. According
to the Python documentation, file.readline always includes a trailing
newline character unless the file ends with an incomplete line. An empty
string signals EOF. This patch raises an EOFError when that happens.

[1] https://docs.python.org/2/library/stdtypes.html#file.readline

Differential revision: https://reviews.llvm.org/D81898
2020-06-16 11:05:19 -07:00

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RUN: echo 'foo' | %lldb -o script | FileCheck %s
# Check that the python interpreter detects the OF and the prompt is printed
# exactly once.
CHECK: >>>
CHECK-NOT: >>>