Replace VEC(gdb_xml_value_s) with std::vector

This patch replaces VEC(gdb_xml_value_s), which is passed to XML
visitors, with an std::vector.  In order to be able to remove the
cleanup in gdb_xml_parser::start_element, the gdb_xml_parser structure
is made to own the value with a gdb::unique_xmalloc_ptr.

This patch has been tested on the buildbot.

gdb/ChangeLog:

	* xml-support.h (struct gdb_xml_value): Add constructor.
	<value>: Change type to unique_xmalloc_ptr.
	(gdb_xml_value_s): Remove typedef.
	(DEF_VEC_O (gdb_xml_value_s)): Remove.
	(gdb_xml_element_start_handler): Change parameter type to
	std::vector.
	(xml_find_attribute): Likewise.
	* xml-support.c (xml_find_attribute): Change parameter type to
	std::vector and adjust.
	(gdb_xml_values_cleanup): Remove.
	(gdb_xml_parser::start_element): Adjust to std::vector.
	(xinclude_start_include): Change paraeter type to std::vector
	and adjust.
	* btrace.c (check_xml_btrace_version): Likewise.
	(parse_xml_btrace_block): Likewise.
	(parse_xml_btrace_pt_config_cpu): Likewise.
	(parse_xml_btrace_pt): Likewise.
	(parse_xml_btrace_conf_bts): Likewise.
	(parse_xml_btrace_conf_pt): Likewise.
	* memory-map.c (memory_map_start_memory): Likewise.
	(memory_map_start_property): Likewise.
	* osdata.c (osdata_start_osdata): Likewise.
	(osdata_start_item): Likewise.
	(osdata_start_column): Likewise.
	* remote.c (start_thread): Likewise.
	* solib-aix.c (library_list_start_library): Likewise.
	(library_list_start_list): Likewise.
	* solib-svr4.c (library_list_start_library): Likewise.
	(svr4_library_list_start_list): Likewise.
	* solib-target.c (library_list_start_segment): Likewise.
	(library_list_start_section): Likewise.
	(library_list_start_library): Likewise.
	(library_list_start_list): Likewise.
	* tracepoint.c (traceframe_info_start_memory): Likewise.
	(traceframe_info_start_tvar): Likewise.
	* xml-syscall.c (syscall_start_syscall): Likewise.
	* xml-tdesc.c (tdesc_start_target): Likewise.
	(tdesc_start_feature): Likewise.
	(tdesc_start_reg): Likewise.
	(tdesc_start_union): Likewise.
	(tdesc_start_struct): Likewise.
	(tdesc_start_flags): Likewise.
	(tdesc_start_enum): Likewise.
	(tdesc_start_field): Likewise.
	(tdesc_start_enum_value): Likewise.
	(tdesc_start_vector): Likewise.

1 files changed, 24 insertions, 15 deletions

diff --git a/gdb/btrace.c b/gdb/btrace.c
index 8823046f6d7..ffcf53ad9f1 100644
--- a/gdb/btrace.c
+++ b/gdb/btrace.c
@@ -2002,10 +2002,11 @@ btrace_free_objfile (struct objfile *objfile)
 static void
 check_xml_btrace_version (struct gdb_xml_parser *parser,
 			  const struct gdb_xml_element *element,
-			  void *user_data, VEC (gdb_xml_value_s) *attributes)
+			  void *user_data,
+			  std::vector<gdb_xml_value> &attributes)
 {
   const char *version
-    = (const char *) xml_find_attribute (attributes, "version")->value;
+    = (const char *) xml_find_attribute (attributes, "version")->value.get ();
 
   if (strcmp (version, "1.0") != 0)
     gdb_xml_error (parser, _("Unsupported btrace version: \"%s\""), version);
@@ -2016,7 +2017,8 @@ check_xml_btrace_version (struct gdb_xml_parser *parser,
 static void
 parse_xml_btrace_block (struct gdb_xml_parser *parser,
 			const struct gdb_xml_element *element,
-			void *user_data, VEC (gdb_xml_value_s) *attributes)
+			void *user_data,
+			std::vector<gdb_xml_value> &attributes)
 {
   struct btrace_data *btrace;
   struct btrace_block *block;
@@ -2038,8 +2040,8 @@ parse_xml_btrace_block (struct gdb_xml_parser *parser,
       gdb_xml_error (parser, _("Btrace format error."));
     }
 
-  begin = (ULONGEST *) xml_find_attribute (attributes, "begin")->value;
-  end = (ULONGEST *) xml_find_attribute (attributes, "end")->value;
+  begin = (ULONGEST *) xml_find_attribute (attributes, "begin")->value.get ();
+  end = (ULONGEST *) xml_find_attribute (attributes, "end")->value.get ();
 
   block = VEC_safe_push (btrace_block_s, btrace->variant.bts.blocks, NULL);
   block->begin = *begin;
@@ -2092,16 +2094,20 @@ static void
 parse_xml_btrace_pt_config_cpu (struct gdb_xml_parser *parser,
 				const struct gdb_xml_element *element,
 				void *user_data,
-				VEC (gdb_xml_value_s) *attributes)
+				std::vector<gdb_xml_value> &attributes)
 {
   struct btrace_data *btrace;
   const char *vendor;
   ULONGEST *family, *model, *stepping;
 
-  vendor = (const char *) xml_find_attribute (attributes, "vendor")->value;
-  family = (ULONGEST *) xml_find_attribute (attributes, "family")->value;
-  model = (ULONGEST *) xml_find_attribute (attributes, "model")->value;
-  stepping = (ULONGEST *) xml_find_attribute (attributes, "stepping")->value;
+  vendor =
+    (const char *) xml_find_attribute (attributes, "vendor")->value.get ();
+  family
+    = (ULONGEST *) xml_find_attribute (attributes, "family")->value.get ();
+  model
+    = (ULONGEST *) xml_find_attribute (attributes, "model")->value.get ();
+  stepping
+    = (ULONGEST *) xml_find_attribute (attributes, "stepping")->value.get ();
 
   btrace = (struct btrace_data *) user_data;
 
@@ -2132,7 +2138,8 @@ parse_xml_btrace_pt_raw (struct gdb_xml_parser *parser,
 static void
 parse_xml_btrace_pt (struct gdb_xml_parser *parser,
 		     const struct gdb_xml_element *element,
-		     void *user_data, VEC (gdb_xml_value_s) *attributes)
+		     void *user_data,
+		     std::vector<gdb_xml_value> &attributes)
 {
   struct btrace_data *btrace;
 
@@ -2226,7 +2233,8 @@ parse_xml_btrace (struct btrace_data *btrace, const char *buffer)
 static void
 parse_xml_btrace_conf_bts (struct gdb_xml_parser *parser,
 			  const struct gdb_xml_element *element,
-			  void *user_data, VEC (gdb_xml_value_s) *attributes)
+			  void *user_data,
+			  std::vector<gdb_xml_value> &attributes)
 {
   struct btrace_config *conf;
   struct gdb_xml_value *size;
@@ -2237,7 +2245,7 @@ parse_xml_btrace_conf_bts (struct gdb_xml_parser *parser,
 
   size = xml_find_attribute (attributes, "size");
   if (size != NULL)
-    conf->bts.size = (unsigned int) *(ULONGEST *) size->value;
+    conf->bts.size = (unsigned int) *(ULONGEST *) size->value.get ();
 }
 
 /* Parse a btrace-conf "pt" xml record.  */
@@ -2245,7 +2253,8 @@ parse_xml_btrace_conf_bts (struct gdb_xml_parser *parser,
 static void
 parse_xml_btrace_conf_pt (struct gdb_xml_parser *parser,
 			  const struct gdb_xml_element *element,
-			  void *user_data, VEC (gdb_xml_value_s) *attributes)
+			  void *user_data,
+			  std::vector<gdb_xml_value> &attributes)
 {
   struct btrace_config *conf;
   struct gdb_xml_value *size;
@@ -2256,7 +2265,7 @@ parse_xml_btrace_conf_pt (struct gdb_xml_parser *parser,
 
   size = xml_find_attribute (attributes, "size");
   if (size != NULL)
-    conf->pt.size = (unsigned int) *(ULONGEST *) size->value;
+    conf->pt.size = (unsigned int) *(ULONGEST *) size->value.get ();
 }
 
 static const struct gdb_xml_attribute btrace_conf_pt_attributes[] = {