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// [config]
// expect_result: fail
// glsl_version: 1.50
// check_link: true
// [end config]
//
// From section 4.3.7 (Interface Blocks) of the GLSL 1.50 spec:
//
// If an instance name (instance-name) is not used, the names
// declared inside the block are scoped at the global level and
// accessed as if they were declared outside the block.
//
// Consequently, inside an interface block lacking an instance-name,
// it is illegal to use a name that was previously declared inside a
// different interface block lacking an instance-name (just as it
// would be illegal to redeclare the name outside an interface block).
#version 150
out block1 {
vec4 a;
};
out block2 {
vec4 a;
};
void main()
{
}
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