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fix bug when ReadFile returns synchronously in collectOutputWindows

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This commit is contained in:
Jonathan Marler 2022-02-07 01:49:15 -07:00
parent 4fddb591e2
commit 2cc33367eb
1 changed files with 3 additions and 1 deletions
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4
lib/std/child_process.zig
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@ -270,12 +270,14 @@ pub const ChildProcess = struct {
try buf.ensureTotalCapacity(new_capacity);
const next_buf = buf.unusedCapacitySlice();
if (next_buf.len == 0) return .full;
const read_result = windows.kernel32.ReadFile(handle, next_buf.ptr, math.cast(u32, next_buf.len) catch maxInt(u32), null, overlapped);
var read_bytes: u32 = undefined;
const read_result = windows.kernel32.ReadFile(handle, next_buf.ptr, math.cast(u32, next_buf.len) catch maxInt(u32), &read_bytes, overlapped);
if (read_result == 0) return switch (windows.kernel32.GetLastError()) {
.IO_PENDING => .pending,
.BROKEN_PIPE => .closed,
else => |err| windows.unexpectedError(err),
};
buf.items.len += read_bytes;
}
}