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68e26a2cee
On arm64 macOS, the address of the last frame is 0x0 rather than a positive value like 0x1 on x86_64 macOS, therefore, we overflow an integer trying to subtract 1 when printing the stack trace. This patch fixes it by first checking for this condition before trying to subtract 1. Note that we do not need to signal the `SignalIterator` about this as it will correctly detect this condition on the subsequent iteration and return `null`, thus terminating the loop.