[Mesa-dev] [PATCH] glsl: fix crash in loop analysis when some loop controls can't be found

[Aras Pranckevicius]

Attached patch fixes crash in GLSL loop analysis when some of the loop's
controls (e.g. "from") can not be determined.

This happens on a shader like this (there's another loop between counter
initialization & loop):

void main() {
float a = 0.0;
int k = 0;
for (int i = 0; i < 3; ++i)
a += 1.0;
for ( ; k < 3; ++k)
a += 3.0;
    gl_FragColor = vec4(a);
}


-- 
Aras Pranckevičius
work: http://unity3d.com
home: http://aras-p.info
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