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bpo-40555: Check for p->error_indicator in loop rules after the main loop is done #19986

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merged 1 commit into from
May 8, 2020
Merged

bpo-40555: Check for p->error_indicator in loop rules after the main loop is done #19986

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9 changes: 9 additions & 0 deletions Lib/test/test_eof.py
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,15 @@ def test_EOFS(self):
else:
raise support.TestFailed

def test_eof_with_line_continuation(self):
expect = "unexpected EOF while parsing (<string>, line 1)"
try:
compile('"\\xhh" \\', '<string>', 'exec', dont_inherit=True)
except SyntaxError as msg:
self.assertEqual(str(msg), expect)
else:
raise support.TestFailed

def test_line_continuation_EOF(self):
"""A continuation at the end of input must be an error; bpo2180."""
expect = 'unexpected EOF while parsing (<string>, line 1)'
Expand Down
54 changes: 27 additions & 27 deletions Parser/pegen/parse.c
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Original file line number Diff line number Diff line change
Expand Up @@ -11437,7 +11437,7 @@ _loop1_11_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -11876,7 +11876,7 @@ _loop1_22_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -12252,7 +12252,7 @@ _loop1_31_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -12911,7 +12911,7 @@ _loop1_47_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -13267,7 +13267,7 @@ _loop1_56_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -13369,7 +13369,7 @@ _loop1_58_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -13422,7 +13422,7 @@ _loop1_59_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -13475,7 +13475,7 @@ _loop1_60_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -13577,7 +13577,7 @@ _loop1_62_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -13679,7 +13679,7 @@ _loop1_64_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -13781,7 +13781,7 @@ _loop1_66_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -13834,7 +13834,7 @@ _loop1_67_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14007,7 +14007,7 @@ _loop1_71_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14145,7 +14145,7 @@ _loop1_74_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14345,7 +14345,7 @@ _loop1_78_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14447,7 +14447,7 @@ _loop1_80_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14500,7 +14500,7 @@ _loop1_81_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14553,7 +14553,7 @@ _loop1_82_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14655,7 +14655,7 @@ _loop1_84_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14757,7 +14757,7 @@ _loop1_86_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14859,7 +14859,7 @@ _loop1_88_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14912,7 +14912,7 @@ _loop1_89_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -14965,7 +14965,7 @@ _loop1_90_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -15018,7 +15018,7 @@ _loop1_91_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -15358,7 +15358,7 @@ _loop1_99_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -15567,7 +15567,7 @@ _loop1_104_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down Expand Up @@ -17165,7 +17165,7 @@ _loop1_145_rule(Parser *p)
}
p->mark = mark;
}
if (n == 0) {
if (n == 0 || p->error_indicator) {
PyMem_Free(children);
return NULL;
}
Expand Down
2 changes: 1 addition & 1 deletion Tools/peg_generator/pegen/c_generator.py
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -525,7 +525,7 @@ def _handle_loop_rule_body(self, node: Rule, rhs: Rhs) -> None:
rulename=node.name if memoize else None,
)
if is_repeat1:
self.print("if (n == 0) {")
self.print("if (n == 0 || p->error_indicator) {")
with self.indent():
self.print("PyMem_Free(children);")
self.print("return NULL;")
Expand Down