4d2b216121
The name of the ZCU object file emitted by the LLVM backend has been changed in this branch from e.g. `foo.obj` to `foo_zcu.obj`. This is to avoid name clashes. This commit just updates the stack trace tests which started failing on windows because of the object name change.
89 lines
3.8 KiB
Zig
89 lines
3.8 KiB
Zig
const builtin = @import("builtin");
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const std = @import("std");
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const mem = std.mem;
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const fs = std.fs;
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pub fn main() !void {
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var arena_instance = std.heap.ArenaAllocator.init(std.heap.page_allocator);
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defer arena_instance.deinit();
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const arena = arena_instance.allocator();
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const args = try std.process.argsAlloc(arena);
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const input_path = args[1];
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const optimize_mode_text = args[2];
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const input_bytes = try std.fs.cwd().readFileAlloc(arena, input_path, 5 * 1024 * 1024);
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const optimize_mode = std.meta.stringToEnum(std.builtin.OptimizeMode, optimize_mode_text).?;
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var stderr = input_bytes;
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// process result
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// - keep only basename of source file path
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// - replace address with symbolic string
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// - replace function name with symbolic string when optimize_mode != .Debug
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// - skip empty lines
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const got: []const u8 = got_result: {
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var buf = std.ArrayList(u8).init(arena);
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defer buf.deinit();
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if (stderr.len != 0 and stderr[stderr.len - 1] == '\n') stderr = stderr[0 .. stderr.len - 1];
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var it = mem.splitScalar(u8, stderr, '\n');
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process_lines: while (it.next()) |line| {
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if (line.len == 0) continue;
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// offset search past `[drive]:` on windows
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var pos: usize = if (builtin.os.tag == .windows) 2 else 0;
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// locate delims/anchor
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const delims = [_][]const u8{ ":", ":", ":", " in ", "(", ")" };
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var marks = [_]usize{0} ** delims.len;
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for (delims, 0..) |delim, i| {
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marks[i] = mem.indexOfPos(u8, line, pos, delim) orelse {
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// unexpected pattern: emit raw line and cont
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try buf.appendSlice(line);
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try buf.appendSlice("\n");
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continue :process_lines;
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};
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pos = marks[i] + delim.len;
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}
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// locate source basename
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pos = mem.lastIndexOfScalar(u8, line[0..marks[0]], fs.path.sep) orelse {
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// unexpected pattern: emit raw line and cont
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try buf.appendSlice(line);
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try buf.appendSlice("\n");
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continue :process_lines;
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};
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// end processing if source basename changes
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if (!mem.eql(u8, "source.zig", line[pos + 1 .. marks[0]])) break;
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// emit substituted line
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try buf.appendSlice(line[pos + 1 .. marks[2] + delims[2].len]);
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try buf.appendSlice(" [address]");
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if (optimize_mode == .Debug) {
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try buf.appendSlice(line[marks[3] .. marks[4] + delims[4].len]);
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const file_name = line[marks[4] + delims[4].len .. marks[5]];
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// The LLVM backend currently uses the object file name in the debug info here.
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// This actually violates the DWARF specification (DWARF5 § 3.1.1, lines 24-27).
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// The self-hosted backend uses the root Zig source file of the module (in compilance with the spec).
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if (std.mem.eql(u8, file_name, "test") or
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std.mem.eql(u8, file_name, "test_zcu.obj") or
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std.mem.endsWith(u8, file_name, ".zig"))
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{
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try buf.appendSlice("[main_file]");
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} else {
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// Something unexpected; include it verbatim.
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try buf.appendSlice(file_name);
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}
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try buf.appendSlice(line[marks[5]..]);
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} else {
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try buf.appendSlice(line[marks[3] .. marks[3] + delims[3].len]);
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try buf.appendSlice("[function]");
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}
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try buf.appendSlice("\n");
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}
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break :got_result try buf.toOwnedSlice();
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};
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try std.io.getStdOut().writeAll(got);
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}
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