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compiler: disable warnings in all vendored code #31868

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alexrp merged 4 commits from alexrp/zig:disable-vendor-warnings into master 2026年04月15日 11:19:51 +02:00

With Zig 0.16.0, if you try to build a simple C++ program with:

zig c++ main.cxx

You're met with a flood of hundreds of nullability warnings while building libc++.

We already disable warnings in most vendored code, so let's just be consistent and do it for all of them. Not a single time have any of these warnings actually alerted me to something I needed to fix in Zig, and they're super annoying from a user perspective because there's nothing you can do about them.

With Zig 0.16.0, if you try to build a simple C++ program with: ``` zig c++ main.cxx ``` You're met with a flood of hundreds of nullability warnings while building libc++. We already disable warnings in most vendored code, so let's just be consistent and do it for all of them. Not a single time have any of these warnings actually alerted me to something I needed to fix in Zig, and they're super annoying from a user perspective because there's nothing you can do about them.
libcxx: disable all warnings
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18964c0865
alexrp deleted branch disable-vendor-warnings 2026年04月15日 11:19:54 +02:00
@ -233,2 +233,2 @@
.src_path=trylib_path(comp,arena,lib_libc_glibc++"csu"++path.sep_str++"init.c"),
.owner=undefined,
constinit_o:Compilation.CSourceFile=blk:{
varargs=std.array_list.Managed([]constu8).init(arena);
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Use the non-deprecated one?

- var args = std.array_list.Managed([]const u8).init(arena);
+ var args: std.ArrayList([]const u8) = .empty;
Use the non-deprecated one? ```diff - var args = std.array_list.Managed([]const u8).init(arena); + var args: std.ArrayList([]const u8) = .empty; ```
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The whole file can be converted to unmanaged ArrayList in one go at some point. This just mirrors the code that was already there.

The whole file can be converted to unmanaged `ArrayList` in one go at some point. This just mirrors the code that was already there.
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