[cairo] User code triggers some inner Cairo assert
sebastien.kramm at univ-rouen.fr
Fri Sep 14 06:52:24 PDT 2012
This is my first post here.
For some application, I am writing a wrapper over basic drawing stuff with cairo,
and the corresponding images are displayed into Gtk+2 windows. It ""kinda works"".
However, one of my samples triggers an internal cairo assert, and I really don't see
how to fix this. The log is:
demo1: /build/buildd/cairo-1.10.2/src/cairo.c:173: _cairo_error: Assertion `(status
!= CAIRO_STATUS_SUCCESS && status <= CAIRO_STATUS_LAST_STATUS)' failed.
Something in my code is probably doing something really bad, but I don't know what.
FIY, its a C++ app, that is calling a set of C functions that are wrappers over the
drawing back-end library (Cairo) and window managment (Gtk+2).
I only use a small subset of the Cairo functions, drawing on images is done with the
classical pattern (creating a cairo_t* with cairo_create(), drawing, then release the
From error message, I seem to be using 1.10 version (plateform is Ubuntu 12.04). I
tried to upgrade to 1.12, but the classical:
sudo apt-get install libcairo2-dev
as suggested by:
tells me that:
"libcairo2-dev is already the newest version"
(although this seems to be false).
I checked the corresponding code via:
and the assert is in some function:
cairo_status_t _cairo_error (cairo_status_t status)
that my code does NOT call.
My knowledge of Cairo is very limited, so I'm stuck. Any advice on how to move on
would be appreciated.
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