Skip to content

bpo-40619: Correctly handle error lines in programs without file mode#20090

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
pablogsal merged 3 commits into from
May 14, 2020
Merged

bpo-40619: Correctly handle error lines in programs without file mode #20090

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
e821e23
bpo-40619: Correctly handle error text and offset for <string> input
pablogsal May 14, 2020
3e395f0
fixup! bpo-40619: Correctly handle error text and offset for <string>…
pablogsal May 14, 2020
8a4ef9b
fixup! fixup! bpo-40619: Correctly handle error text and offset for <…
pablogsal May 14, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions Lib/test/test_exceptions.py
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -228,6 +228,8 @@ def bar():
def baz():
'''quux'''
""", 9, 20)
check("pass\npass\npass\n(1+)\npass\npass\npass", 4, 4)
check("(1+)", 1, 4)

# Errors thrown by symtable.c
check('x = [(yield i) for i in range(3)]', 1, 5)
Expand Down
30 changes: 5 additions & 25 deletions Parser/pegen/pegen.c
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -300,30 +300,6 @@ raise_tokenizer_init_error(PyObject *filename)
Py_XDECREF(tuple);
}

static inline PyObject *
get_error_line(char *buffer, int is_file)
{
const char *newline;
if (is_file){
newline = strrchr(buffer, '\n');
} else{
newline = strchr(buffer, '\n');
}

if (is_file){
while (newline > buffer && newline[-1] == '\n'){
--newline;
}
}

if (newline){
return PyUnicode_DecodeUTF8(buffer, newline - buffer, "replace");
}
else{
return PyUnicode_DecodeUTF8(buffer, strlen(buffer), "replace");
}
}

static int
tokenizer_error(Parser *p)
{
Expand DownExpand Up@@ -422,7 +398,11 @@ _PyPegen_raise_error_known_location(Parser *p, PyObject *errtype,
}

if (!error_line){
error_line = get_error_line(p->tok->buf, p->start_rule == Py_file_input);
Py_ssize_t size = p->tok->inp - p->tok->buf;
if (size && p->tok->buf[size-1] == '\n'){
size--;
}
error_line = PyUnicode_DecodeUTF8(p->tok->buf, size, "replace");
if (!error_line){
goto error;
}
Expand Down