<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Conditional jump or move depends on uninitialised value(s) in composite_traps()" href="https://bugs.freedesktop.org/show_bug.cgi?id=91271#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Conditional jump or move depends on uninitialised value(s) in composite_traps()" href="https://bugs.freedesktop.org/show_bug.cgi?id=91271">bug 91271</a> from <a class="email" href="mailto:sixtysix@inwind.it" title="Massimo <sixtysix@inwind.it>"> Massimo</a> <pre>A similar stack trace is obtained: ==2146== Conditional jump or move depends on uninitialised value(s) ==2146== at 0x4CA625A: composite_traps (cairo/src/cairo-xlib-render-compositor.c:1888) ==2146== by 0x4C8E5DA: composite_traps (cairo/src/cairo-traps-compositor.c:1098) ==2146== by 0x4C8E5DA: composite_mask_clip (cairo/src/cairo-traps-compositor.c:2035) ==2146== by 0x4C8EB05: create_composite_mask (cairo/src/cairo-traps-compositor.c:477) ==2146== by 0x4C8FAB4: clip_and_composite_with_mask (cairo/src/cairo-traps-compositor.c:548) ==2146== by 0x4C8FAB4: clip_and_composite (cairo/src/cairo-traps-compositor.c:1039) ==2146== by 0x4C8FE41: _cairo_traps_compositor_mask (cairo/src/cairo-traps-compositor.c:2102) ==2146== by 0x4C38D78: _cairo_compositor_mask (cairo/src/cairo-compositor.c:106) ==2146== by 0x4C7EE1B: _cairo_surface_mask (cairo/src/cairo-surface.c:2166) ==2146== by 0x4C85125: _cairo_surface_wrapper_mask (cairo/src/cairo-surface-wrapper.c:206) ==2146== by 0x4C70A60: _cairo_recording_surface_replay_internal (cairo/src/cairo-recording-surface.c:1754) ==2146== by 0x4C71D48: _cairo_recording_surface_replay_with_clip (cairo/src/cairo-recording-surface.c:2013) ==2146== by 0x4C901E5: composite_aligned_boxes (cairo/src/cairo-traps-compositor.c:1242) ==2146== by 0x4C901E5: clip_and_composite_boxes.part.13 (cairo/src/cairo-traps-compositor.c:1792) ==2146== by 0x4C9058C: clip_and_composite_boxes (cairo/src/cairo-traps-compositor.c:1742) ==2146== by 0x4C90BD1: _cairo_traps_compositor_paint (cairo/src/cairo-traps-compositor.c:2063) ==2146== by 0x4C38CE8: _cairo_compositor_paint (cairo/src/cairo-compositor.c:65) ==2146== by 0x4C7EB40: _cairo_surface_paint (cairo/src/cairo-surface.c:2117) ==2146== by 0x4C4062E: _cairo_gstate_paint (cairo/src/cairo-gstate.c:1067) ==2146== by 0x4C33BC4: cairo_paint (cairo/src/cairo.c:2003) ==2146== by 0x43C154: record_replay (cairo/test/record2x.c:377) ==2146== by 0x40E5F1: cairo_test_for_target (cairo/test/cairo-test.c:929) ==2146== by 0x40E5F1: _cairo_test_context_run_for_target (cairo/test/cairo-test.c:1532) ==2146== by 0x40BA53: _cairo_test_runner_draw (cairo/test/cairo-test-runner.c:255) ==2146== by 0x40BA53: main (cairo/test/cairo-test-runner.c:937) ==2146== Uninitialised value was created by a stack allocation ==2146== at 0x4CA5EAD: composite_traps (cairo/src/cairo-xlib-render-compositor.c:1818) running: ( cd test; DISPLAY=:2 CAIRO_TEST_TARGET=xlib valgrind --track-origins=yes .libs/cairo-test-suite -f record2x-paint-alpha-clip-mask ) it happens when in 'composite_traps' traps->num_traps == 0 in that case returning CAIRO_STATUS_SUCCESS at line 1829 <a href="http://cgit.freedesktop.org/cairo/tree/src/cairo-xlib-render-compositor.c#n1829">http://cgit.freedesktop.org/cairo/tree/src/cairo-xlib-render-compositor.c#n1829</a> silences valgrind.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>