[cairo-bugs] [Bug 105739] New: function cairo_text_extents causes resource leaks

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Mar 26 03:23:24 UTC 2018


            Bug ID: 105739
           Summary: function cairo_text_extents causes resource leaks
           Product: cairo
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
          Assignee: chris at chris-wilson.co.uk
          Reporter: vgdoqd at gmail.com
        QA Contact: cairo-bugs at cairographics.org

`cairo_text_extents` refs the current font face of cairo_t, and leads to
resource leaks. The callstack is as follows

#0  cairo_font_face_reference (font_face=0x419908) at cairo-font-face.c:134
#1  cairo_scaled_font_create (font_face=0x439410, font_matrix=0x419340,
ctm=0xbfffedb0, options=0xbfffede0) at cairo-scaled-font.c:1179
#2  _cairo_gstate_ensure_scaled_font (gstate=0x4192f0) at cairo-gstate.c:1915
#3  _cairo_gstate_get_scaled_font (gstate=0x4192f0, scaled_font=0xbfffee54) at
#4  _cairo_default_context_get_scaled_font (abstract_cr=0x4192d0) at
#5  cairo_get_scaled_font (cr=0x4192d0) at cairo.c:3348
#6  cairo_text_extents (cr=0x4192d0, utf8=0x400d8e "Hello, Cairo!",
extents=0xbfffeee8) at cairo.c:3398

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