Fixes for gcc 15

README.md

@@ -1,4 +1,4 @@
-# WeaselJSON: A Streaming JSON Parser Review
+# WeaselJSON: A Streaming JSON Parser
 
 ## What is WeaselJSON?
 
@@ -17,28 +17,20 @@ WeaselJSON is a high-performance, streaming JSON parser that uses callbacks inst
 - The callback API is a pain to use correctly
 - Requires a lot of boilerplate for simple tasks
 - Most people don't actually need streaming JSON parsing
-- Some features only work if you control how the JSON is structured
 
 ## JSON Parser Decision Guide
 
 ```mermaid
 flowchart TD
-    A[Need to parse JSON?] --> B{Do you have memory constraints<br/>or truly streaming data?}
+    A[Need to parse JSON?] --> B{Memory or size constraints?}
 
-    B -->|No| C{Is performance critical<br/>and data fits in memory?}
-    B -->|Yes| D{Can you control<br/>how the JSON is laid out?}
+    B -->|Yes| C[WeaselJSON<br/>Streaming parser]
 
-    C -->|No| E[SimdJSON DOM API<br/>Fast and easy to use<br/>Wait why are you using C++?]
-    C -->|Yes| F{Are you OK with potential<br/>performance traps?}
+    B -->|No| D{Need maximum speed?}
 
-    F -->|Yes| G[SimdJSON On-Demand<br/>Very fast<br/>Nice API<br/>Easy to use wrong]
-    F -->|No| H[Consider weaseljson<br/>if you can deal with callbacks]
+    D -->|No| E[SimdJSON DOM<br/>Easy to use]
 
-    D -->|No| I{Can you preprocess data<br/>or make multiple requests?}
-    D -->|Yes| J[WeaselJSON<br/>Streaming performance<br/>Constant memory usage<br/>Harder to use]
-
-    I -->|No| K[Use SimdJSON DOM<br/>Deal with the tradeoffs]
-    I -->|Yes| L[WeaselJSON with<br/>data preprocessing]
+    D -->|Yes| F[SimdJSON On-Demand<br/>Fastest option]
 ```
 
 ## When to Use What
@@ -47,18 +39,19 @@ flowchart TD
 - You want to write `obj["key"]` and have it just work
 - JSON files are reasonably sized (but you still want decent performance)
 - You care about getting things done
+- You need full document validation upfront
 
 ### Use **SimdJSON On-Demand** when:
 - Performance is critical and your data fits in memory
-- You understand that some access patterns can accidentally become very slow
+- You can work with forward-only traversal (no random access or backtracking)
 - You need maximum speed but still want a usable API
+- You're okay with partial validation (only validates parts you actually access)
+- Your JSON keys don't contain escape sequences (OnDemand matches raw keys without unescaping)
 
 ### Use **WeaselJSON** when:
-- You absolutely cannot load the whole JSON into memory
-- You're processing huge JSON files (multiple gigabytes)
 - You want to parse just part of a JSON file without reading the rest
 - You need to convert JSON into some other format as you parse it
-- You can't risk accidentally slow performance
+- You need predictable performance characteristics
 - Writing stateful callbacks is your idea of fun
 
 ## The Reality
@@ -67,8 +60,6 @@ WeaselJSON solves real problems that other parsers can't handle, but most people
 
 The parser represents excellent engineering work and occupies a useful niche. It's the kind of tool you're very glad exists when you actually need it, but most people will never need it.
 
-**Note**: WeaselJSON assumes modern CPU features (SIMD), so you probably can't use it for embedded development.
-
 ## Technical Reference
 
 ### Features
@@ -76,7 +67,7 @@ The parser represents excellent engineering work and occupies a useful niche. It
 - No memory allocations during parsing
 - O(1) memory usage regardless of input size
 - Streaming API - no need to buffer the entire document in memory. Parsing is resumed when more data is available
-- Strings are unescaped in place before they're presented. No unicode normalization is performed
+- By default, strings are unescaped in place before they're presented (modifies your input buffer). No unicode normalization is performed
 - Robust to crashes with untrusted input
 - SIMD optimizations for string scanning and validation
 

src/parser3.h

@@ -214,7 +214,7 @@ inline PRESERVE_NONE WeaselJsonStatus scan_string_impl(Parser3 *self,
       }
       auto v = V{(int8_t *)buf};
       int normal =
-          (v != V::splat('"') & v != V::splat('\\') & v >= V::splat(0x20))
+          ((v != V::splat('"')) & (v != V::splat('\\')) & (v >= V::splat(0x20)))
               .count_leading_nonzero_lanes();
       buf += normal;
       if (normal < V::lanes) {

src/simd.h

@@ -558,7 +558,7 @@ template <std::integral T, int kLanes> struct simd<T, kLanes, Simd_x86_SSE> {
     for (; i + 16 / sizeof(T) <= kLanes; i += 16 / sizeof(T)) {
       __m128i v0;
       memcpy(&v0, &x[i], 16);
-      v0 = _mm_xor_si128(v0, _mm_set1_epi8(0xff));
+      v0 = _mm_xor_si128(v0, _mm_set1_epi8((char)0xff));
       memcpy(&result.x[i], &v0, 16);
     }
     for (; i < kLanes; ++i) {
@@ -1702,13 +1702,13 @@ template <std::integral T, int kLanes> struct simd<T, kLanes, Simd_x86_AVX2> {
     for (; i + 32 / sizeof(T) <= kLanes; i += 32 / sizeof(T)) {
       __m256i v0;
       memcpy(&v0, &x[i], 32);
-      v0 = _mm256_xor_si256(v0, _mm256_set1_epi8(0xff));
+      v0 = _mm256_xor_si256(v0, _mm256_set1_epi8((char)0xff));
       memcpy(&result.x[i], &v0, 32);
     }
     for (; i + 16 / sizeof(T) <= kLanes; i += 16 / sizeof(T)) {
       __m128i v0;
       memcpy(&v0, &x[i], 16);
-      v0 = _mm_xor_si128(v0, _mm_set1_epi8(0xff));
+      v0 = _mm_xor_si128(v0, _mm_set1_epi8((char)0xff));
       memcpy(&result.x[i], &v0, 16);
     }
     for (; i < kLanes; ++i) {

symbol-imports.txt

@@ -1,5 +1,7 @@
+_GLOBAL_OFFSET_TABLE_
 __cpu_indicator_init
 __cpu_model
+__stack_chk_fail@GLIBC_2.4
 free@GLIBC_2.2.5
 malloc@GLIBC_2.2.5
 memmove@GLIBC_2.2.5