From 273a49858fa9c8d73de87167618ef99d70f9731a Mon Sep 17 00:00:00 2001 From: Jon Turney Date: Wed, 18 Mar 2015 15:47:13 +0000 Subject: Fix debug section compression so that it is only performed if it would make the section smaller. PR binutils/18087 gas * doc/as.texinfo: Note that when gas compresses debug sections the compression is only performed if it makes the section smaller. * write.c (compress_debug): Do not compress a debug section if doing so would make it larger. tests * gas/i386/dw2-compress-1.d: Do not expect the .debug_abbrev or .debug_info sections to be compressed. binu * doc/binutils.texi: Note that when objcopy compresses debug sections the compression is only performed if it makes the section smaller. bfd * coffgen.c (make_a_section_from_file): Only prepend a z to a debug section's name if the section was actually compressed. * elf.c (_bfd_elf_make_section_from_shdr): Likewise. * compress.c (bfd_init_section_compress_status): Do not compress the section if doing so would make it bigger. In such cases leave the section alone and return COMPRESS_SECTION_NONE. --- binutils/ChangeLog | 8 ++++++++ binutils/doc/binutils.texi | 8 ++++++-- 2 files changed, 14 insertions(+), 2 deletions(-) (limited to 'binutils') diff --git a/binutils/ChangeLog b/binutils/ChangeLog index f59c0d13590..5c0efb115fa 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,3 +1,11 @@ +2015-03-18 Jon Turney + Nick Clifton + + PR binutils/18087 + * doc/binutils.texi: Note that when objcopy compresses debug + sections the compression is only performed if it makes the section + smaller. + 2015-03-10 H.J. Lu PR binutils/18101 diff --git a/binutils/doc/binutils.texi b/binutils/doc/binutils.texi index 22d54bebfed..da50163ce42 100644 --- a/binutils/doc/binutils.texi +++ b/binutils/doc/binutils.texi @@ -1844,10 +1844,14 @@ It can also be a useful way of reducing the size of a @option{--just-symbols} linker input file. @item --compress-debug-sections -Compress DWARF debug sections using zlib. +Compress DWARF debug sections using zlib. The debug sections are +renamed to begin with @samp{.zdebug} instead of @samp{.debug}. Note - +if compression would actually make a section @emph{larger} then it is +not compressed or renamed. @item --decompress-debug-sections -Decompress DWARF debug sections using zlib. +Decompress DWARF debug sections using zlib. The original section +names of the compressed sections are restored. @item -V @itemx --version -- cgit v1.2.1