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bpo-40661: Fix segfault when parsing invalid input #20165

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Merged
pablogsal merged 4 commits into from
May 18, 2020
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bpo-40661: Fix segfault when parsing invalid input #20165

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a1a9d28
bpo-40661: Fix segfault when parsing invalid input
lysnikolaou May 17, 2020
9ec03ba
Check for errors at the beginning of each rule as well
lysnikolaou May 17, 2020
b7be72c
Update Lib/test/test_peg_parser.py
gvanrossum May 18, 2020
7353b6c
Add test also to test_syntax
pablogsal May 18, 2020
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bpo-40661: Fix segfault when parsing invalid input 
Fix segfaults when parsing very complex invalid input, like
`import äˆ ð£„¯ð¢·žð±‹á”€ð””ð‘©±å®ä±¬ð©¾\n𗶽`.

Initially reported by @pablogsal.
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@lysnikolaou
lysnikolaou committed May 17, 2020
commit a1a9d28c87e57b36550707bb4a0a1c9b14b7d2a8
1 change: 1 addition & 0 deletions Lib/test/test_peg_parser.py
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Expand Up @@ -591,6 +591,7 @@ def f(*a, b):
("f-string_single_closing_brace", "f'}'"),
("from_import_invalid", "from import import a"),
("from_import_trailing_comma", "from a import b,"),
("import_very_complex", "import äˆ ð£„¯ð¢·žð±‹á”€ð””ð‘©±å®ä±¬ð©¾\n𗶽"),
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# This test case checks error paths involving tokens with uninitialized
# values of col_offset and end_col_offset.
("invalid indentation",
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