From 02357a4aafd655e14222cdfa5e1c316bd1bbb092 Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Thu, 6 May 2010 00:15:29 +0000 Subject: [PATCH] * remote.c (clear_threads_parsing_context): New. (remote_threads_info): Delete unused null_cleanup. Install a cleanup to clear the threads_parsing_context in case parsing throws. --- gdb/ChangeLog | 7 +++++++ gdb/remote.c | 27 +++++++++++++++++++++++---- 2 files changed, 30 insertions(+), 4 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 8b7f9673f05..1bc88cd590d 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,10 @@ +2010-05-06 Pedro Alves + + * remote.c (clear_threads_parsing_context): New. + (remote_threads_info): Delete unused null_cleanup. Install a + cleanup to clear the threads_parsing_context in case parsing + throws. + 2010-05-05 Michael Snyder * c-exp.y (parse_string_or_char): Delete unused variable. diff --git a/gdb/remote.c b/gdb/remote.c index 39820847828..95bbc3fb056 100644 --- a/gdb/remote.c +++ b/gdb/remote.c @@ -2482,6 +2482,21 @@ const struct gdb_xml_element threads_elements[] = { { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } }; +/* Discard the contents of the constructed thread info context. */ + +static void +clear_threads_parsing_context (void *p) +{ + struct threads_parsing_context *context = p; + int i; + struct thread_item *item; + + for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) + xfree (item->extra); + + VEC_free (thread_item_t, context->items); +} + #endif /* @@ -2512,15 +2527,20 @@ remote_threads_info (struct target_ops *ops) { struct gdb_xml_parser *parser; struct threads_parsing_context context; - struct cleanup *back_to = make_cleanup (null_cleanup, NULL); + struct cleanup *clear_parsing_context; context.items = 0; + /* Note: this parser cleanup is already guarded by BACK_TO + above. */ parser = gdb_xml_create_parser_and_cleanup (_("threads"), threads_elements, &context); gdb_xml_use_dtd (parser, "threads.dtd"); + clear_parsing_context + = make_cleanup (clear_threads_parsing_context, &context); + if (gdb_xml_parse (parser, xml) == 0) { int i; @@ -2542,13 +2562,12 @@ remote_threads_info (struct target_ops *ops) info = demand_private_info (item->ptid); info->core = item->core; info->extra = item->extra; - item->extra = 0; + item->extra = NULL; } - xfree (item->extra); } } - VEC_free (thread_item_t, context.items); + do_cleanups (clear_parsing_context); } do_cleanups (back_to); -- 2.30.2