Why Does std::random_device Produce Consistent Sequences with MinGW GCC 4.8.1?

Randomness in std::random_device with MinGW GCC 4.8.1

Inquiring into the behavior of std::random_device in the context of randomness generation, a developer encountered consistent sequences across multiple executions of the same code using MinGW GCC 4.8.1. This begs the question: why does this occur?

Understanding std::random_device

According to cppreference.com, std::random_device may be implemented using a pseudo-random number engine if a genuinely non-deterministic source is unavailable. In such cases, the implemented RNG should ideally receive some form of seeding.

Implementation Suspicion

However, in the instance described by the developer, it appears that no seeding occurs, resulting in the same predictable sequence on each run. This behavior suggests that the implementation deliberately returns the same sequence to emphasize the non-randomness of the purported "random" device.

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