| Summary: | Crasher | ||
|---|---|---|---|
| Product: | cairo | Reporter: | John McCutchan <ttb> |
| Component: | general | Assignee: | Carl Worth <cworth> |
| Status: | RESOLVED WORKSFORME | QA Contact: | cairo-bugs mailing list <cairo-bugs> |
| Severity: | normal | ||
| Priority: | high | CC: | billy.biggs, jwatt |
| Version: | 0.9.3 | ||
| Hardware: | x86 (IA32) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
I've tested a slightly modified version of the proposed test case on my Linux
box, to make it run with Cairo snapshot 0.5.0 (libpixman 0.1.5).
I didn't notice the segmentation fault in cairo_font_destroy, but at the 6th
iteration of the loop, the program did crash because of a lack of memory (I've
just 64 MB RAM). I suspected that the cairo_scale call iterated again and again
requires lot of memory, so when I uncomment the commented cairo_save /
cairo_restore pair, the program just runs fine forever. And with Valgrind too.
#include <cairo/cairo.h>
#include <stdio.h>
int main (int argc, char **argv)
{
int x, y, stride;
cairo_t *cr;
x = 400;
y = 400;
stride = x * 4;
cairo_surface_t* surf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
x, y);
cr = cairo_create (surf);
int i = 0;
while (1) {
printf("iteration %d\n", ++i);
/* cairo_save(cr); */ /* Uncomment */
cairo_scale (cr, 400, 16);
cairo_set_line_width (cr, 0.04);
cairo_move_to (cr, 0.0, 0.0);
cairo_line_to (cr, 1.0, 0.0);
cairo_line_to (cr, 1.0, 1.0);
cairo_line_to (cr, 0.0, 1.0);
cairo_save (cr);
cairo_set_source_rgb (cr, 0.3725, 0.5254,
0.7019);
cairo_fill (cr);
cairo_restore (cr);
cairo_close_path (cr);
cairo_stroke (cr);
/* cairo_restore(cr); */ /* Uncomment */
}
}
I can't reproduce the crash or the memory increasing using cairo from HEAD. Closing as WORKSFORME. Please re-open if you are still having problems with the latest code. Move bugs against "cvs" version to "0.9.3" so we can remove the "cvs" version. |
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This simple program crashes cairo. Am I doing something wrong or what? #include <cairo.h> int main (int argc, char **argv) { int x, y, stride; cairo_t *cr; x = 400; y = 400; stride = x * 4; cr = cairo_create (); cairo_set_target_image (cr, (char *)malloc (sizeof(uint32_t) * x * y), CAIRO_FORMAT_ARGB32, x, y, stride); while (1) { cairo_scale (cr, 400, 16); cairo_set_line_width (cr, 0.04); cairo_move_to (cr, 0.0, 0.0); cairo_line_to (cr, 1.0, 0.0); cairo_line_to (cr, 1.0, 1.0); cairo_line_to (cr, 0.0, 1.0); cairo_save (cr); cairo_set_rgb_color (cr, 0.3725, 0.5254, 0.7019); cairo_fill (cr); cairo_restore (cr); cairo_close_path (cr); cairo_stroke (cr); } } backtrace, Program received signal SIGSEGV, Segmentation fault. cairo_font_destroy (font=0x0) at cairo_font.c:187 187 if (--(font->refcount) > 0) (gdb) bt #0 cairo_font_destroy (font=0x0) at cairo_font.c:187 #1 0x400b614e in _cairo_gstate_init_copy (gstate=0x9b400710, other=0x804a018) at cairo_gstate.c:177 #2 0x400b63c8 in _cairo_gstate_clone (gstate=0x0) at cairo_gstate.c:245 #3 0x400b0e84 in *INT_cairo_save (cr=0x804a008) at cairo.c:176 #4 0x080488fe in main ()