--- a/gl/stdlib.in.h
+++ b/gl/stdlib.in.h
@@ -237,7 +237,7 @@ _GL_INLINE_HEADER_BEGIN
 
 /* Declarations for ISO C N3322.  */
 #if defined __GNUC__ && __GNUC__ >= 15 && !defined __clang__
-_GL_EXTERN_C void *bsearch (const void *__key,
+_GL_EXTERN_C void *(bsearch) (const void *__key,
                             const void *__base, size_t __nmemb, size_t __size,
                             int (*__compare) (const void *, const void *))
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (2, 3) _GL_ARG_NONNULL ((5));
--- a/gl/string.in.h
+++ b/gl/string.in.h
@@ -214,64 +214,64 @@ _GL_EXTERN_C void free (void *);
 
 /* Declarations for ISO C N3322.  */
 #if defined __GNUC__ && __GNUC__ >= 15 && !defined __clang__
-_GL_EXTERN_C void *memcpy (void *__dest, const void *__src, size_t __n)
+_GL_EXTERN_C void *(memcpy) (void *__dest, const void *__src, size_t __n)
 # if __GLIBC__ + (__GLIBC_MINOR__ >= 2) > 2
   _GL_ATTRIBUTE_NOTHROW
 # endif
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 3)
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (2, 3);
-_GL_EXTERN_C void *memccpy (void *__dest, const void *__src, int __c, size_t __n)
+_GL_EXTERN_C void *(memccpy) (void *__dest, const void *__src, int __c, size_t __n)
 # if __GLIBC__ + (__GLIBC_MINOR__ >= 2) > 2
   _GL_ATTRIBUTE_NOTHROW
 # endif
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 4)
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (2, 4);
-_GL_EXTERN_C void *memmove (void *__dest, const void *__src, size_t __n)
+_GL_EXTERN_C void *(memmove) (void *__dest, const void *__src, size_t __n)
 # if __GLIBC__ + (__GLIBC_MINOR__ >= 2) > 2
   _GL_ATTRIBUTE_NOTHROW
 # endif
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 3)
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (2, 3);
-_GL_EXTERN_C char *strncpy (char *__dest, const char *__src, size_t __n)
+_GL_EXTERN_C char *(strncpy) (char *__dest, const char *__src, size_t __n)
 # if __GLIBC__ + (__GLIBC_MINOR__ >= 2) > 2
   _GL_ATTRIBUTE_NOTHROW
 # endif
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 3)
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (2, 3);
-_GL_EXTERN_C char *strndup (const char *__s, size_t __n)
+_GL_EXTERN_C char *(strndup) (const char *__s, size_t __n)
 # if __GLIBC__ + (__GLIBC_MINOR__ >= 2) > 2
   _GL_ATTRIBUTE_NOTHROW
 # endif
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 2);
-_GL_EXTERN_C char *strncat (char *__dest, const char *__src, size_t __n)
+_GL_EXTERN_C char *(strncat) (char *__dest, const char *__src, size_t __n)
 # if __GLIBC__ + (__GLIBC_MINOR__ >= 2) > 2
   _GL_ATTRIBUTE_NOTHROW
 # endif
   _GL_ARG_NONNULL ((1)) _GL_ATTRIBUTE_NONNULL_IF_NONZERO (2, 3);
-_GL_EXTERN_C int memcmp (const void *__s1, const void *__s2, size_t __n)
+_GL_EXTERN_C int (memcmp) (const void *__s1, const void *__s2, size_t __n)
 # if __GLIBC__ + (__GLIBC_MINOR__ >= 2) > 2
   _GL_ATTRIBUTE_NOTHROW
 # endif
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 3)
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (2, 3);
-_GL_EXTERN_C int strncmp (const char *__s1, const char *__s2, size_t __n)
+_GL_EXTERN_C int (strncmp) (const char *__s1, const char *__s2, size_t __n)
 # if __GLIBC__ + (__GLIBC_MINOR__ >= 2) > 2
   _GL_ATTRIBUTE_NOTHROW
 # endif
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 3)
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (2, 3);
 # ifndef __cplusplus
-_GL_EXTERN_C void *memchr (const void *__s, int __c, size_t __n)
+_GL_EXTERN_C void *(memchr) (const void *__s, int __c, size_t __n)
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 3);
-_GL_EXTERN_C void *memrchr (const void *__s, int __c, size_t __n)
+_GL_EXTERN_C void *(memrchr) (const void *__s, int __c, size_t __n)
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 3);
 # endif
-_GL_EXTERN_C void *memset (void *__s, int __c, size_t __n)
+_GL_EXTERN_C void *(memset) (void *__s, int __c, size_t __n)
 # if __GLIBC__ + (__GLIBC_MINOR__ >= 2) > 2
   _GL_ATTRIBUTE_NOTHROW
 # endif
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 3);
-_GL_EXTERN_C void *memset_explicit (void *__s, int __c, size_t __n)
+_GL_EXTERN_C void *(memset_explicit) (void *__s, int __c, size_t __n)
   _GL_ATTRIBUTE_NONNULL_IF_NONZERO (1, 3);
 #endif