From a3b1f10dbc6afd313806e9c69244738f4c8b88b9 Mon Sep 17 00:00:00 2001
From: Earlopain <14981592+Earlopain@users.noreply.github.com>
Date: Wed, 1 Apr 2026 13:00:37 +0200
Subject: [PATCH] Remove a warning from `discarded-qualifiers`
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

I've been seeing this for a while now:
```
../../../../ext/prism/../../src/memchr.c: In function ‘pm_memchr’:
../../../../ext/prism/../../src/memchr.c:35:16: warning: return discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
   35 |         return memchr(memory, character, number);
      |                ^~~~~~
```
---
 include/prism/internal/memchr.h | 2 +-
 src/memchr.c                    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/prism/internal/memchr.h b/include/prism/internal/memchr.h
index 63c738387d..6f6b0bca30 100644
--- a/include/prism/internal/memchr.h
+++ b/include/prism/internal/memchr.h
@@ -10,6 +10,6 @@
  * we need to search for a character in a buffer that could be the trailing byte
  * of a multibyte character.
  */
-void * pm_memchr(const void *source, int character, size_t number, bool encoding_changed, const pm_encoding_t *encoding);
+const void * pm_memchr(const void *source, int character, size_t number, bool encoding_changed, const pm_encoding_t *encoding);
 
 #endif
diff --git a/src/memchr.c b/src/memchr.c
index 6266d4ca7a..900e6245b7 100644
--- a/src/memchr.c
+++ b/src/memchr.c
@@ -11,7 +11,7 @@
  * we need to search for a character in a buffer that could be the trailing byte
  * of a multibyte character.
  */
-void *
+const void *
 pm_memchr(const void *memory, int character, size_t number, bool encoding_changed, const pm_encoding_t *encoding) {
     if (encoding_changed && encoding->multibyte && character >= TRAILING_BYTE_MINIMUM) {
         const uint8_t *source = (const uint8_t *) memory;