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stress-test: Avoid overflows in clip rectangles

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The rectangles in the clip region set in set_general_properties()
would sometimes overflow, which would lead to messages like these:

      *** BUG ***
      In pixman_region32_union_rect: Invalid rectangle passed
      Set a breakpoint on '_pixman_log_error' to debug

when the micro version number of pixman is even.

Fix this by detecting the overflow and clamping such that the x2/y2
coordinates are less than INT32_MAX.
This commit is contained in:
Søren Sandmann Pedersen 2012-07-30 16:10:05 -04:00
parent 24d83cbf3d
commit 38fe7cd7be
1 changed files with 5 additions and 0 deletions
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5
test/stress-test.c
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@ -468,6 +468,11 @@ set_general_properties (pixman_image_t *image, pixman_bool_t allow_alpha_map)
width = lcg_rand_n (image->bits.width) - x + 10;
height = lcg_rand_n (image->bits.height) - y + 10;
if (width + x < x)
width = INT32_MAX - x;
if (height + y < y)
height = INT32_MAX - y;
pixman_region32_union_rect (
&region, &region, x, y, width, height);
}