- Fix the case where \u<unicode char> could crash the compiler on some platforms.

releasenotes.md

@@ -47,6 +47,7 @@
 - Miscompilation: global struct with vector could generate an incorrect initializer.
 - `String.tokenize_all` would yield one too many empty tokens at the end.
 - `String.replace` no longer depends on `String.split`.
+- Fix the case where `\u<unicode char>` could crash the compiler on some platforms.
 
 ### Stdlib changes
 - Add `ThreadPool` join function to wait for all threads to finish in the pool without destroying the threads.

src/utils/lib.h

@@ -609,7 +609,7 @@ static char hex_conv[256] = {
 
 static inline int char_hex_to_nibble(char c)
 {
-	return hex_conv[(unsigned)c] - 1;
+	return hex_conv[(unsigned char)c] - 1;
 }
 
 static inline bool char_is_hex_or_(char c)