diff --git a/CLAUDE.md b/CLAUDE.md
index 6167e558ae..59c9e2bede 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -8,7 +8,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 Perry is a native TypeScript compiler written in Rust that compiles TypeScript source code directly to native executables. It uses SWC for TypeScript parsing and LLVM for code generation.
 
-**Current Version:** 0.5.1318
+**Current Version:** 0.5.1319
 
 
 ## TypeScript Parity Status
diff --git a/Cargo.lock b/Cargo.lock
index 0e185080bd..bf3f1c6496 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5547,7 +5547,7 @@ checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
 
 [[package]]
 name = "perry"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "base64",
@@ -5607,14 +5607,14 @@ dependencies = [
 
 [[package]]
 name = "perry-api-manifest"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "serde",
 ]
 
 [[package]]
 name = "perry-audio-miniaudio"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "cc",
  "libc",
@@ -5622,7 +5622,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "inkwell",
@@ -5639,7 +5639,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-arkts"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "perry-hir",
@@ -5647,7 +5647,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-glance"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "perry-hir",
@@ -5655,7 +5655,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-js"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "perry-dispatch",
@@ -5664,7 +5664,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-swiftui"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "perry-hir",
@@ -5672,7 +5672,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-wasm"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "base64",
@@ -5684,7 +5684,7 @@ dependencies = [
 
 [[package]]
 name = "perry-codegen-wear-tiles"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "perry-hir",
@@ -5692,7 +5692,7 @@ dependencies = [
 
 [[package]]
 name = "perry-container-compose"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -5721,14 +5721,14 @@ dependencies = [
 
 [[package]]
 name = "perry-container-e2e"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
 ]
 
 [[package]]
 name = "perry-diagnostics"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "serde",
  "serde_json",
@@ -5736,7 +5736,7 @@ dependencies = [
 
 [[package]]
 name = "perry-dispatch"
-version = "0.5.1318"
+version = "0.5.1319"
 
 [[package]]
 name = "perry-doc-fixture-my-bindings"
@@ -5747,7 +5747,7 @@ dependencies = [
 
 [[package]]
 name = "perry-doc-tests"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "clap",
@@ -5762,7 +5762,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-ads"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "block2",
  "objc2",
@@ -5772,7 +5772,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-argon2"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "argon2",
  "perry-ffi",
@@ -5780,7 +5780,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-axios"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "reqwest",
@@ -5789,7 +5789,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-bcrypt"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "bcrypt",
  "perry-ffi",
@@ -5797,7 +5797,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-better-sqlite3"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "rusqlite",
@@ -5805,7 +5805,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-cheerio"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "scraper",
@@ -5813,7 +5813,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-commander"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "perry-runtime",
@@ -5821,7 +5821,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-cron"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "chrono",
  "cron",
@@ -5831,7 +5831,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-dayjs"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "chrono",
  "perry-ffi",
@@ -5839,7 +5839,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-decimal"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "rust_decimal",
@@ -5847,7 +5847,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-dotenv"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "serde_json",
@@ -5855,7 +5855,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-ethers"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "rand 0.10.1",
@@ -5863,7 +5863,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-events"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "perry-runtime",
@@ -5871,14 +5871,14 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-exponential-backoff"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
 ]
 
 [[package]]
 name = "perry-ext-fastify"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "bytes",
  "http-body-util",
@@ -5896,7 +5896,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-fetch"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "bytes",
  "lazy_static",
@@ -5909,7 +5909,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-http"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "bytes",
  "h2",
@@ -5933,7 +5933,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-ioredis"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "lazy_static",
  "perry-ffi",
@@ -5943,7 +5943,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-jsonwebtoken"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "base64",
  "jsonwebtoken",
@@ -5954,7 +5954,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-lru-cache"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "lru",
  "perry-ffi",
@@ -5963,7 +5963,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-moment"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "chrono",
  "perry-ffi",
@@ -5971,7 +5971,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-mongodb"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "bson",
  "futures-util",
@@ -5983,7 +5983,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-mysql2"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "chrono",
  "perry-ffi",
@@ -5993,7 +5993,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-nanoid"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "nanoid",
  "perry-ffi",
@@ -6002,7 +6002,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-net"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "bytes",
  "perry-ffi",
@@ -6015,7 +6015,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-node-forge"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "const-oid 0.9.6",
  "der 0.7.10",
@@ -6034,7 +6034,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-nodemailer"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "lettre",
  "perry-ffi",
@@ -6044,7 +6044,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-pdf"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "printpdf",
@@ -6052,7 +6052,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-pg"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "sqlx",
@@ -6061,7 +6061,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-ratelimit"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "governor",
  "perry-ffi",
@@ -6069,7 +6069,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-sharp"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "fast_image_resize",
  "image",
@@ -6079,14 +6079,14 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-slugify"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
 ]
 
 [[package]]
 name = "perry-ext-streams"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "lazy_static",
  "perry-ffi",
@@ -6095,7 +6095,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-undici"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "perry-runtime",
@@ -6104,7 +6104,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-uuid"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "uuid",
@@ -6112,7 +6112,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-validator"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ffi",
  "regex",
@@ -6122,7 +6122,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-ws"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "futures-util",
  "lazy_static",
@@ -6135,7 +6135,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ext-zlib"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "brotli",
  "flate2",
@@ -6145,7 +6145,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ffi"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "dashmap",
  "once_cell",
@@ -6154,7 +6154,7 @@ dependencies = [
 
 [[package]]
 name = "perry-hir"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "perry-api-manifest",
@@ -6172,7 +6172,7 @@ dependencies = [
 
 [[package]]
 name = "perry-parser"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "perry-diagnostics",
@@ -6184,7 +6184,7 @@ dependencies = [
 
 [[package]]
 name = "perry-runtime"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "base64",
@@ -6226,14 +6226,14 @@ dependencies = [
 
 [[package]]
 name = "perry-runtime-static"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-runtime",
 ]
 
 [[package]]
 name = "perry-stdlib"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "aes 0.8.4",
  "aes 0.9.1",
@@ -6328,14 +6328,14 @@ dependencies = [
 
 [[package]]
 name = "perry-stdlib-static"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-stdlib",
 ]
 
 [[package]]
 name = "perry-transform"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "perry-hir",
@@ -6344,14 +6344,14 @@ dependencies = [
 
 [[package]]
 name = "perry-ui"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ui-model",
 ]
 
 [[package]]
 name = "perry-ui-android"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "base64",
  "itoa",
@@ -6368,7 +6368,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-geisterhand"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "rand 0.10.1",
  "serde",
@@ -6378,7 +6378,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-gtk4"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "base64",
  "cairo-rs 0.22.0",
@@ -6401,7 +6401,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-ios"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "base64",
  "block2",
@@ -6417,7 +6417,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-macos"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "base64",
  "block2",
@@ -6432,7 +6432,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-model"
-version = "0.5.1318"
+version = "0.5.1319"
 
 [[package]]
 name = "perry-ui-test"
@@ -6443,11 +6443,11 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-testkit"
-version = "0.5.1318"
+version = "0.5.1319"
 
 [[package]]
 name = "perry-ui-tvos"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "base64",
  "block2",
@@ -6463,7 +6463,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-visionos"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "base64",
  "block2",
@@ -6479,7 +6479,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-watchos"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "block2",
  "libc",
@@ -6492,7 +6492,7 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-windows"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "base64",
  "libc",
@@ -6509,14 +6509,14 @@ dependencies = [
 
 [[package]]
 name = "perry-ui-windows-winui"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "perry-ui-windows",
 ]
 
 [[package]]
 name = "perry-updater"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "anyhow",
  "base64",
@@ -6532,7 +6532,7 @@ dependencies = [
 
 [[package]]
 name = "perry-wasm-host"
-version = "0.5.1318"
+version = "0.5.1319"
 dependencies = [
  "wasmi",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index db95b4cfb8..c29e72e799 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -315,7 +315,7 @@ codegen-units = 16
 codegen-units = 16
 
 [workspace.package]
-version = "0.5.1318"
+version = "0.5.1319"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/PerryTS/perry"
diff --git a/changelog.d/7565-iterator-no-silent-truncation.md b/changelog.d/7565-iterator-no-silent-truncation.md
new file mode 100644
index 0000000000..f4b8108f34
--- /dev/null
+++ b/changelog.d/7565-iterator-no-silent-truncation.md
@@ -0,0 +1,28 @@
+### Iterators: spread / `Array.from` silently truncated at 100,000 elements
+
+`[...m.values()]` on a 250,000-entry Map returned **100,000 elements** — no
+error, no warning, a plausible-looking wrong answer that a caller would ship.
+Node returns all 250,000.
+
+Three drain loops in `array/iterator.rs` carried a hardcoded
+`for _ in 0..100_000` "safety limit" and simply fell out of the loop when it
+was hit, returning whatever had accumulated. Every spread, `Array.from`, and
+iterator-protocol drain was affected — Maps, Sets, generators, and user
+iterables alike.
+
+Two changes, and the second matters as much as the first:
+
+- The bound is now `MAX_ITERATOR_DRAIN` = JavaScript's own maximum array
+  length (`u32::MAX - 1`), so every realistic workload is unaffected.
+- **Exhausting it throws a `RangeError` instead of truncating.** Node applies
+  no limit at all — `[...it]` runs until the iterator finishes or memory runs
+  out — so matching it exactly would trade silent truncation for an unbounded
+  loop. A visible, recoverable error is the right third option; returning
+  short data is strictly worse than either.
+
+`test_gap_7562_iterator_no_truncation.ts` covers all three drain paths (Map
+values/keys/entries, Set, and a generator) past the old bound, byte-identical
+to node. Sabotage-verified: restoring the 100,000 bound makes it exit 1.
+
+Found by the `map_1m` investigation (#7561) and filed as #7562; pre-existing,
+confirmed at `969b447cc`.
diff --git a/crates/perry-runtime/src/array/iterator.rs b/crates/perry-runtime/src/array/iterator.rs
index 0a09faceeb..ba11ca3a4d 100644
--- a/crates/perry-runtime/src/array/iterator.rs
+++ b/crates/perry-runtime/src/array/iterator.rs
@@ -1009,6 +1009,20 @@ fn is_object_like_value(value: f64) -> bool {
     raw >= 0x10000 && !crate::symbol::is_registered_symbol(raw)
 }
 
+/// #7562: the drain hit [`MAX_ITERATOR_DRAIN`] without the iterator finishing.
+///
+/// Throwing is the point. The previous behaviour was to fall out of the loop
+/// and return whatever had accumulated, so `[...it]` handed back a short array
+/// that looked entirely valid — a `RangeError` is recoverable and visible,
+/// silent truncation is neither.
+#[cold]
+fn throw_iterator_too_long() -> ! {
+    let msg = b"Iterator produced more than the maximum supported number of elements";
+    let msg_str = crate::string::js_string_from_bytes(msg.as_ptr(), msg.len() as u32);
+    let err = crate::error::js_rangeerror_new(msg_str);
+    crate::exception::js_throw(crate::value::js_nanbox_pointer(err as i64))
+}
+
 #[cold]
 fn throw_iterator_result_not_object() -> ! {
     iter_bt_dump(
@@ -1038,6 +1052,21 @@ pub extern "C" fn js_iterator_next_result(iter_f64: f64) -> f64 {
     result
 }
 
+/// Convert any iterator-protocol object (has `.next()` method) to an array.
+/// #7562: the drain loops below were bounded at a hardcoded 100,000 and
+/// **silently returned a short array** when a longer iterator hit it —
+/// `[...m.values()]` on a 250,000-entry Map produced 100,000 elements with no
+/// error, no warning, and a plausible-looking result. Wrong data a caller
+/// would ship, which is strictly worse than either hanging or throwing.
+///
+/// Node applies no such limit: `[...it]` runs until the iterator finishes or
+/// the process runs out of memory. Matching that exactly would trade silent
+/// truncation for an unbounded loop, so the bound stays — but it is raised to
+/// JavaScript's own maximum array length and **throws** on exhaustion instead
+/// of truncating. Every real workload is unaffected; a runaway iterator now
+/// reports itself rather than corrupting a result.
+const MAX_ITERATOR_DRAIN: usize = u32::MAX as usize - 1;
+
 /// `IteratorClose(iterator)` when destructuring exits before the iterator is done.
 #[no_mangle]
 pub extern "C" fn js_iterator_close_if_not_done(iter_f64: f64, done_f64: f64) -> f64 {
@@ -1106,7 +1135,12 @@ pub(crate) fn sync_iterator_to_array_if_not_async(iter_f64: f64) -> Option<*mut
     let value_key = js_string_from_bytes(b"value".as_ptr(), 5);
     let mut result = arr;
 
-    for _ in 0..100_000 {
+    for drained in 0..MAX_ITERATOR_DRAIN {
+        if drained == MAX_ITERATOR_DRAIN - 1 {
+            // Reached the cap with the iterator still producing: refuse rather
+            // than return a short array (#7562).
+            throw_iterator_too_long();
+        }
         let step = if use_method_dispatch {
             unsafe {
                 crate::object::js_native_call_method(
@@ -1187,7 +1221,6 @@ fn settled_promise_value(value: f64) -> Option<f64> {
     }
 }
 
-/// Convert any iterator-protocol object (has `.next()` method) to an array.
 /// Used by spread on generators, Array.from on generators, etc.
 /// Calls `.next()` in a loop until `.done` is true, collecting `.value` entries.
 #[no_mangle]
@@ -1278,7 +1311,12 @@ pub extern "C" fn js_iterator_to_array(iter_f64: f64) -> *mut ArrayHeader {
     // Reusable scratch slot for the `{ value, done }` object `.next()` returns.
     let step_h = scope.root_nanbox_f64(f64::from_bits(TAG_UNDEFINED));
 
-    for _ in 0..100_000 {
+    for drained in 0..MAX_ITERATOR_DRAIN {
+        if drained == MAX_ITERATOR_DRAIN - 1 {
+            // Reached the cap with the iterator still producing: refuse rather
+            // than return a short array (#7562).
+            throw_iterator_too_long();
+        }
         // safety limit
         // Call next() — stored-closure fast path, or class-id method dispatch.
         // Both addresses are read fresh from their roots at the callsite: the
@@ -1390,7 +1428,12 @@ fn js_async_iterator_to_array(iter_f64: f64) -> *mut ArrayHeader {
     let value_key = js_string_from_bytes(b"value".as_ptr(), 5);
     let mut result = arr;
 
-    for _ in 0..100_000 {
+    for drained in 0..MAX_ITERATOR_DRAIN {
+        if drained == MAX_ITERATOR_DRAIN - 1 {
+            // Reached the cap with the iterator still producing: refuse rather
+            // than return a short array (#7562).
+            throw_iterator_too_long();
+        }
         let step = if use_method_dispatch {
             unsafe {
                 crate::object::js_native_call_method(
diff --git a/test-files/test_gap_7562_iterator_no_truncation.ts b/test-files/test_gap_7562_iterator_no_truncation.ts
new file mode 100644
index 0000000000..17fbda9160
--- /dev/null
+++ b/test-files/test_gap_7562_iterator_no_truncation.ts
@@ -0,0 +1,24 @@
+// #7562: spread / Array.from must not silently truncate a long iterator.
+// The drain loops carried a hardcoded 100,000-element "safety limit" and
+// returned a SHORT array when it was hit — no error, no warning, a
+// plausible-looking wrong answer. Compared byte-for-byte against node.
+const m = new Map<string, number>();
+for (let i = 0; i < 150000; i++) m.set("k" + i, i);
+console.log("map size:", m.size);
+console.log("spread values:", [...m.values()].length);
+console.log("spread keys:", [...m.keys()].length);
+console.log("Array.from values:", Array.from(m.values()).length);
+console.log("spread map:", [...m].length);
+
+const s = new Set<number>();
+for (let i = 0; i < 130000; i++) s.add(i);
+console.log("set size:", s.size);
+console.log("spread set:", [...s].length);
+
+// A generator past the old bound.
+function* gen(n: number) { for (let i = 0; i < n; i++) yield i; }
+const g = [...gen(120000)];
+console.log("generator spread:", g.length, "last:", g[g.length - 1]);
+
+// Small iterators must be untouched.
+console.log("small:", [...new Map([["a", 1], ["b", 2]]).values()].join(","));