diff options
Diffstat (limited to 'gcc/c')
| -rw-r--r-- | gcc/c/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/c/c-decl.c | 15 |
2 files changed, 19 insertions, 4 deletions
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog index 83d1ccc..878f45b 100644 --- a/gcc/c/ChangeLog +++ b/gcc/c/ChangeLog @@ -1,3 +1,11 @@ +2020-04-30 Jakub Jelinek <jakub@redhat.com> + + PR c/94842 + * c-decl.c (set_labels_context_r): In addition to context-less + LABEL_DECLs adjust also LABEL_DECLs with context equal to + parent function if any. + (store_parm_decls): Adjust comment. + 2020-04-19 Jakub Jelinek <jakub@redhat.com> PR objc/94637 diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c index 0b7f437..b3e05be 100644 --- a/gcc/c/c-decl.c +++ b/gcc/c/c-decl.c @@ -9722,15 +9722,18 @@ store_parm_decls_from (struct c_arg_info *arg_info) store_parm_decls (); } -/* Called by walk_tree to look for and update context-less labels. */ +/* Called by walk_tree to look for and update context-less labels + or labels with context in the parent function. */ static tree set_labels_context_r (tree *tp, int *walk_subtrees, void *data) { + tree ctx = static_cast<tree>(data); if (TREE_CODE (*tp) == LABEL_EXPR - && DECL_CONTEXT (LABEL_EXPR_LABEL (*tp)) == NULL_TREE) + && (DECL_CONTEXT (LABEL_EXPR_LABEL (*tp)) == NULL_TREE + || DECL_CONTEXT (LABEL_EXPR_LABEL (*tp)) == DECL_CONTEXT (ctx))) { - DECL_CONTEXT (LABEL_EXPR_LABEL (*tp)) = static_cast<tree>(data); + DECL_CONTEXT (LABEL_EXPR_LABEL (*tp)) = ctx; *walk_subtrees = 0; } @@ -9800,7 +9803,11 @@ store_parm_decls (void) gotos, labels, etc. Because at that time the function decl for F has not been created yet, those labels do not have any function context. But we have the fndecl now, so update the - labels accordingly. gimplify_expr would crash otherwise. */ + labels accordingly. gimplify_expr would crash otherwise. + Or with nested functions the labels could be created with parent + function's context, while when the statement is emitted at the + start of the nested function, it needs the nested function's + context. */ walk_tree_without_duplicates (&arg_info->pending_sizes, set_labels_context_r, fndecl); add_stmt (arg_info->pending_sizes); |