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bpo-39235: Fix end location for genexp in call args (GH-17925) 

The fix changes copy_location() to require an extra node from which to extract the end location, and fixing all 5 call sites.

https://bugs.python.org/issue39235
(cherry picked from commit a796d8ef9d)

Co-authored-by: Guido van Rossum <guido@python.org>
This commit is contained in:
Miss Islington (bot) 2020-01-09 11:39:00 -08:00 committed by GitHub
parent e47a7e3a7a
commit 33e033da3c
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 10 additions and 8 deletions
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2
Misc/NEWS.d/next/Core and Builtins/2020-01-09-10-01-18.bpo-39235.RYwjoc.rst Normal file
View File

@ -0,0 +1,2 @@
Fix AST end location for lone generator expression in function call, e.g.
f(i for i in a).

16
Python/ast.c
View File

@ -1028,13 +1028,13 @@ forbidden_name(struct compiling *c, identifier name, const node *n,
}
static expr_ty
copy_location(expr_ty e, const node *n)
copy_location(expr_ty e, const node *n, const node *end)
{
if (e) {
e->lineno = LINENO(n);
e->col_offset = n->n_col_offset;
e->end_lineno = n->n_end_lineno;
e->end_col_offset = n->n_end_col_offset;
e->end_lineno = end->n_end_lineno;
e->end_col_offset = end->n_end_col_offset;
}
return e;
}
@ -2464,10 +2464,10 @@ ast_for_atom(struct compiling *c, const node *n)
}
if (TYPE(CHILD(ch, 1)) == comp_for) {
return copy_location(ast_for_genexp(c, ch), n);
return copy_location(ast_for_genexp(c, ch), n, n);
}
else {
return copy_location(ast_for_testlist(c, ch), n);
return copy_location(ast_for_testlist(c, ch), n, n);
}
case LSQB: /* list (or list comprehension) */
ch = CHILD(n, 1);
@ -2486,7 +2486,7 @@ ast_for_atom(struct compiling *c, const node *n)
n->n_end_lineno, n->n_end_col_offset, c->c_arena);
}
else {
return copy_location(ast_for_listcomp(c, ch), n);
return copy_location(ast_for_listcomp(c, ch), n, n);
}
case LBRACE: {
/* dictorsetmaker: ( ((test ':' test | '**' test)
@ -2527,7 +2527,7 @@ ast_for_atom(struct compiling *c, const node *n)
/* It's a dictionary display. */
res = ast_for_dictdisplay(c, ch);
}
return copy_location(res, n);
return copy_location(res, n, n);
}
}
default:
@ -3146,7 +3146,7 @@ ast_for_call(struct compiling *c, const node *n, expr_ty func,
}
else if (TYPE(CHILD(ch, 1)) == comp_for) {
/* the lone generator expression */
e = copy_location(ast_for_genexp(c, ch), maybegenbeg);
e = copy_location(ast_for_genexp(c, ch), maybegenbeg, closepar);
if (!e)
return NULL;
asdl_seq_SET(args, nargs++, e);