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-rw-r--r--include/stdlib.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/stdlib.h b/include/stdlib.h
index a76f8edb9a78..086cdddc0f10 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -124,7 +124,7 @@ int mbtowc(wchar_t *, const char *, size_t);
size_t wcstombs(char *, const wchar_t *, size_t);
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
-extern char *_malloc_options;
+extern const char *_malloc_options;
extern void (*_malloc_message)(char *p1, char *p2, char *p3, char *p4);
int putenv(const char *);