denoland/deno · error

malformed .msi: no _StringPool stream

Error message

malformed .msi: no _StringPool stream

What it means

Error "malformed .msi: no _StringPool stream" thrown in denoland/deno.

Source

Thrown at cli/tools/desktop.rs:4938

  let write_stream = |comp: &mut cfb::CompoundFile<std::fs::File>,
                      raw: &str,
                      bytes: &[u8]|
   -> Result<(), AnyError> {
    let mut s = comp.open_stream(format!("/{raw}"))?;
    s.write_all(bytes)?;
    Ok(())
  };
  let find_raw = |suffix: &str| -> Option<String> {
    names
      .iter()
      .find(|n| msi_demangle_stream_name(n).ends_with(suffix))
      .cloned()
  };

  // The string-pool header's top bit selects 3-byte string references; tiny
  // databases use 2-byte refs, but honor the flag to stay correct at any size.
  let pool_raw = find_raw("_StringPool").ok_or_else(|| {
    deno_core::anyhow::anyhow!("malformed .msi: no _StringPool stream")
  })?;
  let pool = read_stream(&mut comp, &pool_raw)?;
  let str_w: usize = if pool.len() >= 4 && (pool[3] & 0x80) != 0 {
    3
  } else {
    2
  };

  // Map every string-pool id to its text so data-table streams (named by table
  // text) can be matched to their column schema (keyed by table string id).
  let data_raw = find_raw("_StringData").ok_or_else(|| {
    deno_core::anyhow::anyhow!("malformed .msi: no _StringData stream")
  })?;
  let str_data = read_stream(&mut comp, &data_raw)?;
  let mut strings = vec![String::new()]; // 1-based; index 0 is unused.
  {
    let mut off = 0usize;
    let mut i = 4;

View on GitHub (pinned to 89f33cbef2)

When it happens

Trigger: Thrown at cli/tools/desktop.rs:4938 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

AI-assisted analysis of denoland/deno@89f33cbef2 (2026-08-16). Data as JSON: /api/errors/ec16d87ff6f3768b. Report an issue: GitHub.