While leak testing my application with MallocDebug yesterday, I noticed
that aglCreateContext was leaking 656 bytes after a context was
destroyed.
To verify that I wasn't doing something silly on my own, I downloaded
the sample app GLCarbonAGLWindow and did a leak check after closing a
window, and sure enough the 656 byte leak was there too.
The stack trace for the leak looks like this from the top down:
aglCreateContext
CGLCreateContext
cglInitializeContext
(4 more anonymous functions)
malloc
I filed a bug report (radar # 3868287).
And this morning I saw that 10.3.6 was out, so after installing that, I
checked again. Now MallocDebug reports a larger leak, 784 bytes now,
each time a context is created/destroyed.
No big deal for a fullscreen game or something where only a handful of
contexts are created/destroyed during the life of an app, but a
potential problem for those of us with long-lived document-based apps
using OpenGL.
I've seen this leak on both machines I've tried: Dual 2.0 G5 with
Radeon 9600 (10.3.5), and 1.25 Powerbook with Radeon 9600 (10.3.5 and
10.3.6). Unfortunately, I don't have anything older than 10.3.5 so I
don't know how far back this goes.
Is anyone else seeing this or am I doing something wrong that I've been
missing all this time?
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