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std.mem.readVarInt: assert ReturnType is large enough (#20946)

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Fixes #20521
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poypoyan 2024-10-12 03:32:10 +08:00 • committed by GitHub
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lib/std/mem.zig
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@ -1602,6 +1602,7 @@ test containsAtLeast {
/// T specifies the return type, which must be large enough to store
/// the result.
pub fn readVarInt(comptime ReturnType: type, bytes: []const u8, endian: Endian) ReturnType {
assert(@typeInfo(ReturnType).int.bits >= bytes.len * 8);
const bits = @typeInfo(ReturnType).int.bits;
const signedness = @typeInfo(ReturnType).int.signedness;
const WorkType = std.meta.Int(signedness, @max(16, bits));