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Philippe Waroquiers authored
commit 23732b1e Author: Pedro Alves <palves@redhat.com> Date: Tue Jun 27 16:22:08 2017 +0100 changed objfile_per_bfd_storage->storage_obstack from 'struct obstack storage_obstack;' to 'auto_obstack storage_obstack;' So the obstack is auto allocated when the objfile_per_bfd_storage ctor is manually called by get_objfile_bfd_data). However, the ctor call was still followed by a manual call to obstack_init (&storage->storage_obstack); This results in a bunch of leaks detected by valgrind, such as: ==24665== 4,064 bytes in 1 blocks are definitely lost in loss record 11,469 of 11,590 ==24665== at 0x4C27BF5: malloc (vg_replace_malloc.c:299) ==24665== by 0x5437B7: xmalloc (common-utils.c:44) ==24665== by 0x77CAA7: _obstack_begin_worker (obstack.c:141) ==24665== by 0x60168F: auto_obstack (gdb_obstack.h:70) ==24665== by 0x60168F: get_objfile_bfd_data(objfile*, bfd*) (objfiles.h:188) ==24665== by 0x601DB6: allocate_objfile(bfd*, char const*, enum_flags<objfile_flag>) (objfiles.c:423) ==24665== by 0x647753: symbol_file_add_with_addrs(bfd*, char const*, enum_flags<symfile_add_flag>, section_addr_info*, enum_flags<objfile_flag>, objfile*) (symfile.c:1158) ==24665== by 0x647C7B: symbol_file_add_separate(bfd*, char const*, enum_flags<symfile_add_flag>, objfile*) (symfile.c:1252) ==24665== by 0x4C7D79: elf_symfile_read(objfile*, enum_flags<symfile_add_flag>) (elfread.c:1270) ==24665== by 0x647CB4: read_symbols(objfile*, enum_flags<symfile_add_flag>) (symfile.c:861) ==24665== by 0x647809: syms_from_objfile_1 (symfile.c:1062) -> remove the manual call to obstack_init. Reg-tested on Debian 8/amd64, tests results are the same before/after the patch. valgrind still show some leaks, but less. gdb/ChangeLog 2017-09-05 Philippe Waroquiers <philippe.waroquiers@skynet.be> * objfiles.c (get_objfile_bfd_data): Remove useless obstack_init call.
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