[cairo-bugs] [Bug 16129] New: Don't export private symbols on non-win32 systems

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed May 28 02:23:46 PDT 2008


           Summary: Don't export private symbols on non-win32 systems
           Product: cairo
           Version: 1.6.4
          Platform: All
        OS/Version: All
            Status: RESOLVED
          Severity: normal
          Priority: medium
         Component: general
        AssignedTo: cworth at cworth.org
        ReportedBy: slomo at circular-chaos.org
         QAContact: cairo-bugs at cairographics.org

Sebastian Dröge <slomo at circular-chaos.org> changed:

           What    |Removed                     |Added
  Attachment #16782|0                           |1
        is obsolete|                            |

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

Created an attachment (id=16782)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=16782)

it would be nice if cairo didn't export private symbols like
_cairo_atomic_mutex, _cairo_font_face_mutex, etc.

Attached patch makes cairo export whatever is in cairo.def (for some reason I
don't have that file) on win32 as it was before but uses a symbol export regexp
on other systems that makes it export only "^cairo.*" symbols.

Please consider applying this for 1.6.


--- Comment #1 from Sebastian Dröge <slomo at circular-chaos.org>  2008-05-28 02:01:53 PST ---
For x86 these symbols are:

$ objdump -T /usr/lib/libcairo.so.2 | grep _cairo
00060bec g    DO .bss   00000018  Base        _cairo_scaled_font_error_mutex
00060bd4 g    DO .bss   00000018  Base        _cairo_scaled_font_map_mutex
00060c1c g    DO .bss   00000018  Base        _cairo_xlib_display_mutex
00060c04 g    DO .bss   00000018  Base        _cairo_ft_unscaled_font_map_mutex
00060b8c g    DO .bss   00000018  Base       
00060ba4 g    DO .bss   00000018  Base       
00060bbc g    DO .bss   00000018  Base        _cairo_font_face_mutex

Other architectures export potentially more.

--- Comment #2 from Sebastian Dröge <slomo at circular-chaos.org>  2008-05-28 02:09:34 PST ---
Created an attachment (id=16784)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=16784)

Better patch that only marks those accidentially exported cairo_.*_mutex
symbols as private.

The other patch might still make sense.

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk>  2008-05-28 02:23:43 PST ---
Too slow ;-) Behdad had already fixed it with commit

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