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Generate clearer size mismatch error message

master
Benjamin Feng 2020-04-05 12:26:26 -05:00 committed by Andrew Kelley
parent 05b587fcde
commit cb98984ae6
1 changed files with 3 additions and 2 deletions
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5
lib/std/mem.zig
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@ -501,7 +501,7 @@ pub const toSlice = @compileError("deprecated; use std.mem.spanZ");
/// the constness of the input type. `[*c]` pointers are assumed to be 0-terminated,
/// and assumed to not allow null.
pub fn Span(comptime T: type) type {
switch(@typeInfo(T)) {
switch (@typeInfo(T)) {
.Optional => |optional_info| {
return ?Span(optional_info.child);
},
@ -1758,7 +1758,8 @@ fn BytesAsValueReturnType(comptime T: type, comptime B: type) type {
if (comptime !trait.is(.Pointer)(B) or
(meta.Child(B) != [size]u8 and meta.Child(B) != [size:0]u8))
{
@compileError("expected *[N]u8 " ++ ", passed " ++ @typeName(B));
comptime var buf: [100]u8 = undefined;
@compileError(std.fmt.bufPrint(&buf, "expected *[{}]u8, passed " ++ @typeName(B), .{size}) catch unreachable);
}
const alignment = comptime meta.alignment(B);