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It's part of a test program used for feature detection (of a sandboxing functionality), and causes a syntax error. That in turn causes the test program to fail
by Denvercoder9 3y ago
It's part of a test program used for feature detection (of a sandboxing functionality), and causes a syntax error. That in turn causes the test program to fail to compile, which makes the configure script assume that the sandboxing function is unavailable, and disables support for it.