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gh-97556: Raise null bytes syntax error upon null in multiline string #104136

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Merged
lysnikolaou merged 2 commits into from
May 4, 2023
Merged

gh-97556: Raise null bytes syntax error upon null in multiline string #104136

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gh-97556: Raise null bytes syntax error upon null in multiline string
lysnikolaou May 3, 2023
78fbd3c
Handle f-strings correctly as well
lysnikolaou May 3, 2023
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Handle f-strings correctly as well
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@lysnikolaou
lysnikolaou committed May 3, 2023
commit 78fbd3ca6185d3483fab191fc8c9be55b093ba0c
19 changes: 10 additions & 9 deletions Lib/test/test_cmd_line_script.py
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Original file line number Diff line number Diff line change
Expand Up @@ -670,16 +670,17 @@ def test_syntaxerror_null_bytes(self):
)

def test_syntaxerror_null_bytes_in_multiline_string(self):
script = "\n'''\nmultilinestring\0\n'''"
scripts = ["\n'''\nmultilinestring\0\n'''", "\nf'''\nmultilinestring\0\n'''"] # Both normal and f-strings
with os_helper.temp_dir() as script_dir:
script_name = _make_test_script(script_dir, 'script', script)
_, _, stderr = assert_python_failure(script_name)
self.assertEqual(
stderr.splitlines()[-2:],
[ b" multilinestring",
b'SyntaxError: source code cannot contain null bytes'
]
)
for script in scripts:
script_name = _make_test_script(script_dir, 'script', script)
_, _, stderr = assert_python_failure(script_name)
self.assertEqual(
stderr.splitlines()[-2:],
[ b" multilinestring",
b'SyntaxError: source code cannot contain null bytes'
]
)

def test_consistent_sys_path_for_direct_execution(self):
# This test case ensures that the following all give the same
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3 changes: 3 additions & 0 deletions Parser/tokenizer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2558,6 +2558,9 @@ tok_get_fstring_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct

while (end_quote_size != current_tok->f_string_quote_size) {
int c = tok_nextc(tok);
if (tok->done == E_ERROR) {
return MAKE_TOKEN(ERRORTOKEN);
}
if (c == EOF || (current_tok->f_string_quote_size == 1 && c == '\n')) {
if (tok->decoding_erred) {
return MAKE_TOKEN(ERRORTOKEN);
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