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Plug source_command leak 

The heap-allocated 'old_source_verbose' local was accidentally left
behind by commit 2ec845e758 ("More uses of scoped_restore").

Valgrind caught it, like:

 ==20123== 8 bytes in 1 blocks are definitely lost in loss record 4,609 of 13,785
 ==20123==    at 0x4C2A988: calloc (vg_replace_malloc.c:711)
 ==20123==    by 0x60A2F8: xcalloc (common-utils.c:84)
 ==20123==    by 0x4CDBE5: build_command_line(command_control_type, char const*) (cli-script.c:159)
 ==20123==    by 0x4CDC32: get_command_line(command_control_type, char const*) (cli-script.c:172)
 ==20123==    by 0x5230F1: python_command(char*, int) (python.c:421)
 ==20123==    by 0x4C61AD: do_cfunc(cmd_list_element*, char*, int) (cli-decode.c:106)
 ==20123==    by 0x4C911F: cmd_func(cmd_list_element*, char*, int) (cli-decode.c:1902)
 ==20123==    by 0x7CA79E: execute_command(char*, int) (top.c:650)
 ==20123==    by 0x695A0C: command_handler(char*) (event-top.c:590)
 ==20123==    by 0x7CA33F: read_command_file(_IO_FILE*) (top.c:461)
 ==20123==    by 0x4D0C3A: script_from_file(_IO_FILE*, char const*) (cli-script.c:1584)
 ==20123==    by 0x4C2727: source_script_from_stream(_IO_FILE*, char const*, char const*) (cli-cmds.c:589)

gdb/ChangeLog:
2017-08-17  Pedro Alves  <palves@redhat.com>

	* cli/cli-cmds.c (source_command): Delete 'old_source_verbose'
	local.
This commit is contained in:
Pedro Alves 2017-08-17 23:45:52 +01:00
parent 4c8aa72d0e
commit b0cba12e07
2 changed files with 5 additions and 1 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2017-08-17 Pedro Alves <palves@redhat.com>
* cli/cli-cmds.c (source_command): Delete 'old_source_verbose'
local.
2017-08-17 Pedro Alves <palves@redhat.com>
* dwarf2read.c (struct dwarf2_cu) <line_header_die_owner>: New

1
gdb/cli/cli-cmds.c
View File

@ -639,7 +639,6 @@ static void
source_command (char *args, int from_tty)
{
char *file = args;
int *old_source_verbose = XNEW (int);
int search_path = 0;
scoped_restore save_source_verbose = make_scoped_restore (&source_verbose);