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Test Info:

<!DOCTYPE html>
<html>
<head>
<script id="fshader" type="x-shader/x-fragment">
void main() {
-2147483648 % 0xffffffff;
gl_FragColor = vec4(0.5, 0.5, 1.0, 1.0);
}
</script>
</head>
<body>
<script>
var gl = document.createElement('canvas').getContext('webgl');
var program = gl.createProgram();
var fshader = gl.createShader(gl.FRAGMENT_SHADER);
var fshaderSource = document.getElementById("fshader").text;
gl.shaderSource(fshader, fshaderSource);
gl.compileShader(fshader);
</script>
</body>
</html>