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Pedro Alves 4c8aa72d0e Plug line_header leaks
This plugs a couple leaks introduced by commit fff8551cf5
("dwarf2read.c: Some C++fycation, use std::vector, std::unique_ptr").

The first problem is that nothing owns the temporary line_header that
handle_DW_AT_stmt_list creates in some cases.  Before the commit
mentioned above, the temporary line_header case used to have:

  make_cleanup (free_cu_line_header, cu);

and that cleanup was assumed to be run by process_die, after
handle_DW_AT_stmt_list returns and before child DIEs were processed.

The second problem is found in setup_type_unit_groups: that also used
to have a similar make_cleanup call, and ended up with a similar leak
after the commit mentioned above.

Fix both cases by recording in dwarf2_cu whether a line header is
owned by the cu/die, and have process_die explicitly free the
line_header if so, making use of a new RAII object that also replaces
the reset_die_in_process cleanup, while at it.

Thanks to Philippe Waroquiers for noticing the leak and pointing in
the right direction.

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

	* dwarf2read.c (struct dwarf2_cu) <line_header_die_owner>: New
	field.
	(reset_die_in_process): Delete, replaced by ...
	(process_die_scope): ... this new class.  Make it responsible for
	freeing cu->line_header too.
	(process_die): Use process_die_scope.
	(handle_DW_AT_stmt_list): Record the line header's owner CU/DIE in
	cu->line_header_die_owner.  Don't release the line header if it's
	owned by the CU.
	(setup_type_unit_groups): Make the CU/DIE own the line header.
	Don't release the line header here.
2017-08-17 22:53:53 +01:00
bfd [AArch64] Skip IFUNC relocations in debug sections 2017-08-17 14:48:03 +01:00
binutils Add test of V2 GNU build attribute notes. 2017-08-17 14:51:31 +01:00
config
cpu
elfcpp gold: Add put_ch_reserved to 64-bit Chdr_write 2017-07-28 13:40:01 -07:00
etc
gas [Patch AArch64] Turn lr, fp, ip0 and ip1 into proper aliases 2017-08-15 13:58:01 +01:00
gdb Plug line_header leaks 2017-08-17 22:53:53 +01:00
gold Add configure flag to enable gnu hash style by default. 2017-08-08 07:25:39 +09:30
gprof Updated Serbian translation for gprof 2017-08-08 11:59:32 +01:00
include Add new NT_PPC_* available since Linux 4.8 2017-08-16 07:45:28 +09:30
intl
ld Add new Brazilian Portuguese translation for the ld subdirectory. 2017-08-17 12:13:28 +01:00
libdecnumber
libiberty Import include/+libiberty/ r249883 from upstream GCC. 2017-07-02 22:09:52 +02:00
opcodes [ARM] Don't warn on REG_SP when used in CRC32 instructions 2017-08-09 17:52:54 +01:00
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