Failing test causes stack trace to print infinitely

[hryx]

See for example:

• https://dev.azure.com/ziglang/zig/_build/results?buildId=1120
• https://dev.azure.com/ziglang/zig/_build/results?buildId=1132

Also confirmed locally on macOS and Linux. It can be easily reproduced by changing one of the strings instd/zig/parser_test.zig to make the test fail.

[andrewrk]

It's probably this logic:

zig/std/debug.zig

Lines 216 to 225 in aa794eb

	var frame_index: usize = 0;
	var frames_left: usize = stack_trace.index;
	while (frames_left != 0) : ({
	frames_left -= 1;
	frame_index = (frame_index + 1) % stack_trace.instruction_addresses.len;
	}) {
	const return_address = stack_trace.instruction_addresses[frame_index];
	try printSourceAtAddress(debug_info, out_stream, return_address, tty_color);
	}

Related to this commit: 00d8f4a

Related issue: #1923