diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ce1a4ac..0a516d4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,7 +33,9 @@ jobs:
       run: |
         cargo check
         cargo test
-        cargo bench
+        cargo bench check
+        cargo fuzz check
+        cargo +nightly fuzz run fuzz_value 
 
   test-linux-aarch64:
     runs-on: [self-hosted, arm]
diff --git a/fuzz/Cargo.lock b/fuzz/Cargo.lock
index b0341d8..fbbabd6 100644
--- a/fuzz/Cargo.lock
+++ b/fuzz/Cargo.lock
@@ -2,15 +2,6 @@
 # It is not intended for manual editing.
 version = 3
 
-[[package]]
-name = "aho-corasick"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43f6cb1bf222025340178f382c426f13757b2960e89779dfcb319c32542a5a41"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "arbitrary"
 version = "1.3.0"
@@ -29,12 +20,6 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
-[[package]]
-name = "bitflags"
-version = "2.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "630be753d4e58660abd17930c71b647fe46c27ea6b63cc59e1e3851406972e42"
-
 [[package]]
 name = "bumpalo"
 version = "3.13.0"
@@ -57,52 +42,12 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "cfg-if"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
-[[package]]
-name = "env_logger"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85cdab6a89accf66733ad5a1693a4dcced6aeff64602b634530dd73c1f3ee9f0"
-dependencies = [
- "humantime",
- "is-terminal",
- "log",
- "regex",
- "termcolor",
-]
-
-[[package]]
-name = "errno"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b30f669a7961ef1631673d2766cc92f52d64f7ef354d4fe0ddfd30ed52f0f4f"
-dependencies = [
- "errno-dragonfly",
- "libc",
- "windows-sys",
-]
-
-[[package]]
-name = "errno-dragonfly"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa68f1b12764fab894d2755d2518754e71b4fd80ecfb822714a1206c2aab39bf"
-dependencies = [
- "cc",
- "libc",
-]
-
 [[package]]
 name = "faststr"
 version = "0.2.8"
@@ -113,29 +58,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "hermit-abi"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "443144c8cdadd93ebf52ddb4056d257f5b52c04d3c804e657d19eb73fc33668b"
-
-[[package]]
-name = "humantime"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
-
-[[package]]
-name = "is-terminal"
-version = "0.4.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb0889898416213fab133e1d33a0e5858a48177452750691bde3666d0fdbaf8b"
-dependencies = [
- "hermit-abi",
- "rustix",
- "windows-sys",
-]
-
 [[package]]
 name = "itoa"
 version = "1.0.9"
@@ -174,24 +96,6 @@ version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7012b1bbb0719e1097c47611d3898568c546d597c2e74d66f6087edd5233ff4"
 
-[[package]]
-name = "linux-raw-sys"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57bcfdad1b858c2db7c38303a6d2ad4dfaf5eb53dfeb0910128b2c26d6158503"
-
-[[package]]
-name = "log"
-version = "0.4.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b06a4cde4c0f271a446782e3eff8de789548ce57dbc8eca9292c27f4a42004b4"
-
-[[package]]
-name = "memchr"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
-
 [[package]]
 name = "num-traits"
 version = "0.2.16"
@@ -214,50 +118,26 @@ version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1f9f08af0c877571712e2e3e686ad79efad9657dbf0f7c3c8ba943ff6c38932d"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "num-traits",
 ]
 
 [[package]]
-name = "regex"
-version = "1.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2eae68fc220f7cf2532e4494aded17545fce192d59cd996e0fe7887f4ceb575"
-dependencies = [
- "aho-corasick",
- "memchr",
- "regex-automata",
- "regex-syntax",
-]
-
-[[package]]
-name = "regex-automata"
-version = "0.3.4"
+name = "proc-macro2"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7b6d6190b7594385f61bd3911cd1be99dfddcfc365a4160cc2ab5bff4aed294"
+checksum = "134c189feb4956b20f6f547d2cf727d4c0fe06722b20a0eec87ed445a97f92da"
 dependencies = [
- "aho-corasick",
- "memchr",
- "regex-syntax",
+ "unicode-ident",
 ]
 
 [[package]]
-name = "regex-syntax"
-version = "0.7.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e5ea92a5b6195c6ef2a0295ea818b312502c6fc94dde986c5553242e18fd4ce2"
-
-[[package]]
-name = "rustix"
-version = "0.38.6"
+name = "quote"
+version = "1.0.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ee020b1716f0a80e2ace9b03441a749e402e86712f15f16fe8a8f75afac732f"
+checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
 dependencies = [
- "bitflags",
- "errno",
- "libc",
- "linux-raw-sys",
- "windows-sys",
+ "proc-macro2",
 ]
 
 [[package]]
@@ -280,20 +160,19 @@ checksum = "62bb4feee49fdd9f707ef802e22365a35de4b7b299de4763d44bfea899442ff9"
 
 [[package]]
 name = "sonic-rs"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "arrayref",
  "bumpalo",
  "bytes",
- "cfg-if 0.1.10",
- "env_logger",
+ "cfg-if",
  "faststr",
  "itoa",
- "log",
  "packed_simd",
  "ryu",
  "serde",
  "smallvec",
+ "thiserror",
 ]
 
 [[package]]
@@ -305,107 +184,38 @@ dependencies = [
 ]
 
 [[package]]
-name = "termcolor"
-version = "1.2.0"
+name = "syn"
+version = "2.0.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be55cf8942feac5c765c2c993422806843c9a9a45d4d5c407ad6dd2ea95eb9b6"
+checksum = "e96b79aaa137db8f61e26363a0c9b47d8b4ec75da28b7d1d614c2303e232408b"
 dependencies = [
- "winapi-util",
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
 ]
 
 [[package]]
-name = "winapi"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
-dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
-]
-
-[[package]]
-name = "winapi-i686-pc-windows-gnu"
-version = "0.4.0"
+name = "thiserror"
+version = "1.0.49"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
-
-[[package]]
-name = "winapi-util"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+checksum = "1177e8c6d7ede7afde3585fd2513e611227efd6481bd78d2e82ba1ce16557ed4"
 dependencies = [
- "winapi",
+ "thiserror-impl",
 ]
 
 [[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
-
-[[package]]
-name = "windows-sys"
-version = "0.48.0"
+name = "thiserror-impl"
+version = "1.0.49"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+checksum = "10712f02019e9288794769fba95cd6847df9874d49d871d062172f9dd41bc4cc"
 dependencies = [
- "windows-targets",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
-name = "windows-targets"
-version = "0.48.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05d4b17490f70499f20b9e791dcf6a299785ce8af4d709018206dc5b4953e95f"
-dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
-]
-
-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.48.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"
-
-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.48.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
-
-[[package]]
-name = "windows_i686_gnu"
-version = "0.48.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
-
-[[package]]
-name = "windows_i686_msvc"
-version = "0.48.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
-
-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.48.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
-
-[[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.48.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
-
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.48.0"
+name = "unicode-ident"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
diff --git a/fuzz/fuzz_targets/from_slice.rs b/fuzz/fuzz_targets/from_slice.rs
index f554865..e3cb1d7 100644
--- a/fuzz/fuzz_targets/from_slice.rs
+++ b/fuzz/fuzz_targets/from_slice.rs
@@ -3,5 +3,7 @@
 use libfuzzer_sys::fuzz_target;
 
 fuzz_target!(|data: &[u8]| {
-    _ = sonic_rs::value::to_dom(data);
+    if let Ok(dom) = sonic_rs::value::dom_from_slice(data) {
+        let _ = sonic_rs::to_string(&dom).unwrap();
+    }
 });
diff --git a/src/reader.rs b/src/reader.rs
index 82730bc..ec6a14a 100644
--- a/src/reader.rs
+++ b/src/reader.rs
@@ -51,7 +51,8 @@ pub trait Reader<'de>: Sealed {
     fn slice_unchecked(&self, start: usize, end: usize) -> &'de [u8];
 
     #[cold]
-    fn position_of_index(&self, i: usize) -> Position {
+    fn position_of_index(&self, mut i: usize) -> Position {
+        i = i.min(self.as_u8_slice().len());
         let mut position = Position { line: 1, column: 0 };
         for ch in &self.as_u8_slice()[..i] {
             match *ch {
diff --git a/src/value/node.rs b/src/value/node.rs
index cdf0acd..38ae1d8 100644
--- a/src/value/node.rs
+++ b/src/value/node.rs
@@ -976,7 +976,7 @@ impl Document {
         let dst = alloc.try_alloc_layout(layout).map_err(Error::custom)?;
         let json_buf = unsafe {
             let dst = dst.as_ptr();
-            std::ptr::copy_nonoverlapping(json.as_ptr(), dst, real_size);
+            std::ptr::copy_nonoverlapping(json.as_ptr(), dst, len);
             *(dst.add(len)) = b'x';
             *(dst.add(len + 1)) = b'"';
             *(dst.add(len + 2)) = b'x';