Created attachment 111398 [details] testcase running the attached test case valgrind reports: >==3== 160 bytes in 1 blocks are definitely lost in loss record 1 of 7 >==3== at 0x4A06BCF: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) >==3== by 0x4C645AC: _cairo_pattern_create_solid (cairo/src/cairo-pattern.c:605) >==3== by 0x4C645EB: _cairo_pattern_create_in_error.part.20 (cairo/src/cairo-pattern.c:628) >==3== by 0x4C3D0E4: _cairo_default_context_set_source_surface (cairo/src/cairo-default-context.c:327) >==3== by 0x4C349EE: cairo_set_source_surface (cairo/src/cairo.c:766) >==3== by 0x400803: main (/home/massimo/devel/tmp/test-cairo-set-source-surface.c:12) _cairo_default_context_set_source_surface, when the surface passed in is in error, returns a pattern->status without destroying the pattern created which is not a static pattern nor part of a cairo owned set of error patterns: http://cgit.freedesktop.org/cairo/tree/src/cairo-default-context.c#n327 Similarly cairo_get_source returns a leaked pattern when the context passed in is in error: http://cgit.freedesktop.org/cairo/tree/src/cairo.c#n833 Valgrind reports this one running: CAIRO_TEST_TARGET=image valgrind --leak-check=full .libs/cairo-test-suite -f api-special-cases
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