Pablo Galindo Salgado <[email protected]> added the comment:
I think we may need to test for the error indicator (and maybe PyErr_Ocurred
for safety) before every alternative. Something like:
diff --git a/Tools/peg_generator/pegen/c_generator.py
b/Tools/peg_generator/pegen/c_generator.py
index 8f9972bb41..61cb694628 100644
--- a/Tools/peg_generator/pegen/c_generator.py
+++ b/Tools/peg_generator/pegen/c_generator.py
@@ -468,10 +468,6 @@ class CParserGenerator(ParserGenerator, GrammarVisitor):
memoize = self._should_memoize(node)
with self.indent():
- self.print("if (p->error_indicator) {")
- with self.indent():
- self.print("return NULL;")
- self.print("}")
self.print(f"{result_type} _res = NULL;")
if memoize:
self.print(f"if (_PyPegen_is_memoized(p, {node.name}_type,
&_res))")
@@ -685,6 +681,12 @@ class CParserGenerator(ParserGenerator, GrammarVisitor):
def visit_Alt(
self, node: Alt, is_loop: bool, is_gather: bool, rulename:
Optional[str]
) -> None:
+ self.print("if (p->error_indicator == 1 || PyErr_Occurred()) {")
+ with self.indent():
+ self.print("p->error_indicator = 1;")
+ self.print("return NULL;")
+ self.print("}")
+
self.print(f"{{ // {node}")
with self.indent():
# Prepare variable declarations for the alternative
----------
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Python tracker <[email protected]>
<https://bugs.python.org/issue40661>
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