[libc-commits] [libc] a591bd2 - Turn LIBC_COPT_STRING_UNSAFE_WIDE_READ on by default (#144163)

[via libc-commits]

Author: Amy Huang
Date: 2025-06-13T15:09:57-07:00
New Revision: a591bd222b2e0356b8132b515422fe480b87322b

URL: https://github.com/llvm/llvm-project/commit/a591bd222b2e0356b8132b515422fe480b87322b
DIFF: https://github.com/llvm/llvm-project/commit/a591bd222b2e0356b8132b515422fe480b87322b.diff

LOG: Turn LIBC_COPT_STRING_UNSAFE_WIDE_READ on by default (#144163)

Configure strlen to use unsafe implementation because it is faster.

Because this is undefined behavior it could cause sanitizers to fail.

Added: 
    

Modified: 
    libc/config/config.json

Removed: 
    


################################################################################
diff  --git a/libc/config/config.json b/libc/config/config.json
index d53b2936edb07..0354b16997cdd 100644
--- a/libc/config/config.json
+++ b/libc/config/config.json
@@ -59,7 +59,7 @@
   },
   "string": {
     "LIBC_CONF_STRING_UNSAFE_WIDE_READ": {
-      "value": false,
+      "value": true,
       "doc": "Read more than a byte at a time to perform byte-string operations like strlen."
     },
     "LIBC_CONF_MEMSET_X86_USE_SOFTWARE_PREFETCHING": {