From 5aa35f62c391d34b92445388c5d645d87f9c4621 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Thu, 17 Feb 2022 14:28:19 -0700
Subject: [PATCH] Revert "reduce build error noise"

This reverts commit baead472d7641bdd96130354bafadc1fb1ed223b.

Let's go through the proposal process on this one. I want to push back
on this. My position is that, at the very least, a full trace of command
lines of sub-processes should be printed on failure, with the exception
of opt-in flags such as `--prominent-compile-errors`.
---
 lib/std/build.zig                           | 14 ---------
 src/main.zig                                |  4 +--
 test/standalone.zig                         |  1 -
 test/standalone/fail_full_report/build.zig  | 32 ---------------------
 test/standalone/fail_full_report/build2.zig |  8 ------
 5 files changed, 1 insertion(+), 58 deletions(-)
 delete mode 100644 test/standalone/fail_full_report/build.zig
 delete mode 100644 test/standalone/fail_full_report/build2.zig

diff --git a/lib/std/build.zig b/lib/std/build.zig
index df8bad52da..fcaa115ccb 100644
--- a/lib/std/build.zig
+++ b/lib/std/build.zig
@@ -3438,17 +3438,3 @@ test "LibExeObjStep.addPackage" {
     const dupe = exe.packages.items[0];
     try std.testing.expectEqualStrings(pkg_top.name, dupe.name);
 }
-
-/// This exit code from either "zig build" or the build_runner indicates
-/// the "full reason" for a build failure has already been reported to stderr.
-/// This will prevent 'zig` from piling on errors to the ones reported by the
-/// build_runner.
-pub const fail_fully_reported_exit_code = 0x3f;
-
-/// Print an error message to stderr and exit with a special exit
-/// code that notifies the invoking process that the build error
-/// has already been fully reported to stderr.
-pub fn fatalFullReport(comptime error_fmt: []const u8, args: anytype) noreturn {
-    std.log.err(error_fmt, args);
-    std.os.exit(fail_fully_reported_exit_code);
-}
diff --git a/src/main.zig b/src/main.zig
index 42e8f339f1..05afc2b166 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -3616,9 +3616,7 @@ pub fn cmdBuild(gpa: Allocator, arena: Allocator, args: []const []const u8) !voi
             .Exited => |code| {
                 if (code == 0) return cleanExit();
 
-                if (code == std.build.fail_fully_reported_exit_code) {
-                    process.exit(std.build.fail_fully_reported_exit_code);
-                } else if (prominent_compile_errors) {
+                if (prominent_compile_errors) {
                     fatal("the build command failed with exit code {d}", .{code});
                 } else {
                     const cmd = try std.mem.join(arena, " ", child_argv);
diff --git a/test/standalone.zig b/test/standalone.zig
index b731463975..6df3387018 100644
--- a/test/standalone.zig
+++ b/test/standalone.zig
@@ -49,7 +49,6 @@ pub fn addCases(cases: *tests.StandaloneContext) void {
     cases.addBuildFile("test/standalone/issue_7030/build.zig", .{});
     cases.addBuildFile("test/standalone/install_raw_hex/build.zig", .{});
     cases.addBuildFile("test/standalone/issue_9812/build.zig", .{});
-    cases.addBuildFile("test/standalone/fail_full_report/build.zig", .{});
     if (builtin.os.tag != .wasi) {
         cases.addBuildFile("test/standalone/load_dynamic_library/build.zig", .{});
     }
diff --git a/test/standalone/fail_full_report/build.zig b/test/standalone/fail_full_report/build.zig
deleted file mode 100644
index 75edfca835..0000000000
--- a/test/standalone/fail_full_report/build.zig
+++ /dev/null
@@ -1,32 +0,0 @@
-const std = @import("std");
-const Builder = std.build.Builder;
-
-pub fn build(b: *Builder) !void {
-    const test_step = b.step("test", "The test");
-
-    {
-        const run_step = b.addSystemCommand(&[_][]const u8{
-            b.zig_exe,
-            "build",
-            "--build-file",
-            "build2.zig",
-        });
-        run_step.stdout_action = .{ .expect_exact = "" };
-        test_step.dependOn(&run_step.step);
-    }
-
-    {
-        const run_step = b.addSystemCommand(&[_][]const u8{
-            b.zig_exe,
-            "build",
-            "--build-file",
-            "build2.zig",
-            "-Dbadoption",
-        });
-        run_step.stderr_action = .{ .expect_exact = "error: got a bad build option!\n" };
-        run_step.expected_exit_code = std.build.fail_fully_reported_exit_code;
-        test_step.dependOn(&run_step.step);
-    }
-
-    b.default_step.dependOn(test_step);
-}
diff --git a/test/standalone/fail_full_report/build2.zig b/test/standalone/fail_full_report/build2.zig
deleted file mode 100644
index 5b0f58a827..0000000000
--- a/test/standalone/fail_full_report/build2.zig
+++ /dev/null
@@ -1,8 +0,0 @@
-const std = @import("std");
-const Builder = std.build.Builder;
-
-pub fn build(b: *Builder) !void {
-    const bad_option = if (b.option(bool, "badoption", "Use this to emulator a bad build option")) |o| o else false;
-    if (bad_option)
-        std.build.fatalFullReport("got a bad build option!", .{});
-}