From fc100d7b3b27bd514dca4e02c160e5b96d4da648 Mon Sep 17 00:00:00 2001 From: Andrew Kelley Date: Thu, 9 Feb 2017 02:50:03 -0500 Subject: lots of miscellaneous things all in one big commit * add `@compileLog(...)` builtin function - Helps debug code running at compile time - See #240 * fix crash when there is an error on the start value of a slice * add implicit cast from int and float types to int and float literals if the value is known at compile time * make array concatenation work with slices in addition to arrays and c string literals * fix compile error message for something not having field access * fix crash when `@setDebugSafety()` was called from a function being evaluated at compile-time * fix compile-time evaluation of overflow math builtins. * avoid debug safety panic handler in builtin.o and compiler_rt.o since we use no debug safety in these modules anyway * add compiler_rt functions for division on ARM - Closes #254 * move default panic handler to std.debug so users can call it manually * std.io.printf supports a width in the format specifier --- std/debug.zig | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'std/debug.zig') diff --git a/std/debug.zig b/std/debug.zig index 435d572ac2..f3278a0e45 100644 --- a/std/debug.zig +++ b/std/debug.zig @@ -13,6 +13,27 @@ pub fn assert(ok: bool) { if (!ok) @unreachable() } +var panicking = false; +/// This is the default panic implementation. +pub coldcc fn panic(message: []const u8) -> unreachable { + // TODO + // if (@atomicRmw(AtomicOp.XChg, &panicking, true, AtomicOrder.SeqCst)) { } + if (panicking) { + // Panicked during a panic. + // TODO detect if a different thread caused the panic, because in that case + // we would want to return here instead of calling abort, so that the thread + // which first called panic can finish printing a stack trace. + os.abort(); + } else { + panicking = true; + } + + %%io.stderr.printf("{}\n", message); + %%printStackTrace(); + + os.abort(); +} + pub fn printStackTrace() -> %void { %return writeStackTrace(&io.stderr); %return io.stderr.flush(); -- cgit v1.2.3