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Fix bugs in Windows readVec implementations

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Carl Åstholm 2025-08-20 01:08:41 +02:00 • committed by Andrew Kelley
parent c3aa650646
commit 8af682b13a
2 changed files with 14 additions and 13 deletions
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24
lib/std/fs/File.zig
View file

@ -1343,14 +1343,15 @@ pub const Reader = struct {
if (is_windows) {
// Unfortunately, `ReadFileScatter` cannot be used since it
// requires page alignment.
assert(io_reader.seek == io_reader.end);
io_reader.seek = 0;
io_reader.end = 0;
if (io_reader.seek == io_reader.end) {
io_reader.seek = 0;
io_reader.end = 0;
}
const first = data[0];
if (first.len >= io_reader.buffer.len) {
if (first.len >= io_reader.buffer.len - io_reader.end) {
return readPositional(r, first);
} else {
io_reader.end += try readPositional(r, io_reader.buffer);
io_reader.end += try readPositional(r, io_reader.buffer[io_reader.end..]);
return 0;
}
}
@ -1391,14 +1392,15 @@ pub const Reader = struct {
if (is_windows) {
// Unfortunately, `ReadFileScatter` cannot be used since it
// requires page alignment.
assert(io_reader.seek == io_reader.end);
io_reader.seek = 0;
io_reader.end = 0;
if (io_reader.seek == io_reader.end) {
io_reader.seek = 0;
io_reader.end = 0;
}
const first = data[0];
if (first.len >= io_reader.buffer.len) {
return readStreaming(r, first);
if (first.len >= io_reader.buffer.len - io_reader.end) {
return readPositional(r, first);
} else {
io_reader.end += try readStreaming(r, io_reader.buffer);
io_reader.end += try readPositional(r, io_reader.buffer[io_reader.end..]);
return 0;
}
}

3
lib/std/net.zig
View file

@ -1992,8 +1992,7 @@ pub const Stream = struct {
};
if (n == 0) return error.EndOfStream;
if (n > data_size) {
io_r.seek = 0;
io_r.end = n - data_size;
io_r.end += n - data_size;
return data_size;
}
return n;