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-rw-r--r--Python/compile.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/Python/compile.c b/Python/compile.c
index a71e7d3..42f3730 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -4788,8 +4788,15 @@ update_location_to_match_attr(struct compiler *c, expr_ty meth)
{
if (meth->lineno != meth->end_lineno) {
// Make start location match attribute
- c->u->u_lineno = meth->end_lineno;
- c->u->u_col_offset = meth->end_col_offset - (int)PyUnicode_GetLength(meth->v.Attribute.attr)-1;
+ c->u->u_lineno = c->u->u_end_lineno = meth->end_lineno;
+ int len = (int)PyUnicode_GET_LENGTH(meth->v.Attribute.attr);
+ if (len <= meth->end_col_offset) {
+ c->u->u_col_offset = meth->end_col_offset - len;
+ }
+ else {
+ // GH-94694: Somebody's compiling weird ASTs. Just drop the columns:
+ c->u->u_col_offset = c->u->u_end_col_offset = -1;
+ }
}
}