From 7edef4f3fd8e260c69142741e750b3e6893434b8 Mon Sep 17 00:00:00 2001 From: Andrew Kelley Date: Tue, 17 May 2016 13:32:43 -0700 Subject: add beginning of print stack trace function introduce std.debug and move std.assert to std.debug.assert add mem.copy --- std/debug.zig | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 std/debug.zig (limited to 'std/debug.zig') diff --git a/std/debug.zig b/std/debug.zig new file mode 100644 index 0000000000..1a289b645e --- /dev/null +++ b/std/debug.zig @@ -0,0 +1,16 @@ +const io = @import("io.zig"); + +pub fn assert(b: bool) { + if (!b) unreachable{} +} + +pub fn print_stack_trace() { + var maybe_fp: ?&const u8 = @frame_address(); + while (true) { + const fp = maybe_fp ?? break; + const return_address = *(&const usize)(usize(fp) + @sizeof(usize)); + %%io.stderr.print_u64(return_address); + %%io.stderr.printf("\n"); + maybe_fp = *(&const ?&const u8)(fp); + } +} -- cgit v1.2.3