mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-13 04:48:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

std.io.Writer: remove requirement of a 2-byte buffer for extern unions (#24489)

Browse Source 
closes #24486
This commit is contained in:
John Benediktsson 2025-07-17 09:42:53 -07:00 committed by GitHub
parent a8dc32e4ec
commit e62e42f0d9
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 2 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
lib/std/Io/Writer.zig
View File

@ -618,10 +618,6 @@ pub fn writeAllPreserve(w: *Writer, preserve_length: usize, bytes: []const u8) E
/// A user type may be a `struct`, `vector`, `union` or `enum` type.
///
/// To print literal curly braces, escape them by writing them twice, e.g. `{{` or `}}`.
///
/// Asserts `buffer` capacity of at least 2 if a union is printed. This
/// requirement could be lifted by adjusting the code, but if you trigger that
/// assertion it is a clue that you should probably be using a buffer.
pub fn print(w: *Writer, comptime fmt: []const u8, args: anytype) Error!void {
const ArgsType = @TypeOf(args);
const args_type_info = @typeInfo(ArgsType);
@ -1257,14 +1253,13 @@ pub fn printValue(
.@"extern", .@"packed" => {
if (info.fields.len == 0) return w.writeAll(".{}");
try w.writeAll(".{ ");
inline for (info.fields) |field| {
inline for (info.fields, 1..) |field, i| {
try w.writeByte('.');
try w.writeAll(field.name);
try w.writeAll(" = ");
try w.printValue(ANY, options, @field(value, field.name), max_depth - 1);
(try w.writableArray(2)).* = ", ".*;
try w.writeAll(if (i < info.fields.len) ", " else " }");
}
w.buffer[w.end - 2 ..][0..2].* = " }".*;
},
}
},