1 files changed, 87 insertions, 33 deletions

diff --git a/gl/string.in.h b/gl/string.in.h
index afe7350..3996da9 100644
--- a/gl/string.in.h
+++ b/gl/string.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <string.h>.
 
-   Copyright (C) 1995-1996, 2001-2021 Free Software Foundation, Inc.
+   Copyright (C) 1995-1996, 2001-2022 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
@@ -112,13 +112,43 @@
 
 /* The definition of _GL_WARN_ON_USE is copied here.  */
 
-/* Declare 'free' if needed for _GL_ATTRIBUTE_DEALLOC_FREE.  */
-_GL_EXTERN_C void free (void *);
+/* Make _GL_ATTRIBUTE_DEALLOC_FREE work, even though <stdlib.h> may not have
+   been included yet.  */
 #if @GNULIB_FREE_POSIX@
 # if (@REPLACE_FREE@ && !defined free \
       && !(defined __cplusplus && defined GNULIB_NAMESPACE))
-#  define free rpl_free
+/* We can't do '#define free rpl_free' here.  */
+_GL_EXTERN_C void rpl_free (void *);
+#  undef _GL_ATTRIBUTE_DEALLOC_FREE
+#  define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (rpl_free, 1)
+# else
+#  if defined _MSC_VER && !defined free
+_GL_EXTERN_C
+#   if defined _DLL
+     __declspec (dllimport)
+#   endif
+     void __cdecl free (void *);
+#  else
+#   if defined __cplusplus && (__GLIBC__ + (__GLIBC_MINOR__ >= 14) > 2)
+_GL_EXTERN_C void free (void *) throw ();
+#   else
 _GL_EXTERN_C void free (void *);
+#   endif
+#  endif
+# endif
+#else
+# if defined _MSC_VER && !defined free
+_GL_EXTERN_C
+#   if defined _DLL
+     __declspec (dllimport)
+#   endif
+     void __cdecl free (void *);
+# else
+#  if defined __cplusplus && (__GLIBC__ + (__GLIBC_MINOR__ >= 14) > 2)
+_GL_EXTERN_C void free (void *) throw ();
+#  else
+_GL_EXTERN_C void free (void *);
+#  endif
 # endif
 #endif
 
@@ -216,10 +246,11 @@ _GL_CXXALIAS_SYS_CAST2 (memchr,
                         void const *, (void const *__s, int __c, size_t __n));
 # endif
 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
-     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
-_GL_CXXALIASWARN1 (memchr, void *, (void *__s, int __c, size_t __n));
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \
+         || defined __clang__)
+_GL_CXXALIASWARN1 (memchr, void *, (void *__s, int __c, size_t __n) throw ());
 _GL_CXXALIASWARN1 (memchr, void const *,
-                   (void const *__s, int __c, size_t __n));
+                   (void const *__s, int __c, size_t __n) throw ());
 # elif __GLIBC__ >= 2
 _GL_CXXALIASWARN (memchr);
 # endif
@@ -301,9 +332,10 @@ _GL_CXXALIAS_SYS_CAST2 (memrchr,
                         void *, (void const *, int, size_t),
                         void const *, (void const *, int, size_t));
 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
-     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
-_GL_CXXALIASWARN1 (memrchr, void *, (void *, int, size_t));
-_GL_CXXALIASWARN1 (memrchr, void const *, (void const *, int, size_t));
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \
+         || defined __clang__)
+_GL_CXXALIASWARN1 (memrchr, void *, (void *, int, size_t) throw ());
+_GL_CXXALIASWARN1 (memrchr, void const *, (void const *, int, size_t) throw ());
 # else
 _GL_CXXALIASWARN (memrchr);
 # endif
@@ -331,9 +363,11 @@ _GL_CXXALIAS_SYS_CAST2 (rawmemchr,
                         void *, (void const *__s, int __c_in),
                         void const *, (void const *__s, int __c_in));
 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
-     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
-_GL_CXXALIASWARN1 (rawmemchr, void *, (void *__s, int __c_in));
-_GL_CXXALIASWARN1 (rawmemchr, void const *, (void const *__s, int __c_in));
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \
+         || defined __clang__)
+_GL_CXXALIASWARN1 (rawmemchr, void *, (void *__s, int __c_in) throw ());
+_GL_CXXALIASWARN1 (rawmemchr, void const *,
+                   (void const *__s, int __c_in) throw ());
 # else
 _GL_CXXALIASWARN (rawmemchr);
 # endif
@@ -435,9 +469,11 @@ _GL_CXXALIAS_SYS_CAST2 (strchrnul,
                         char const *, (char const *__s, int __c_in));
 # endif
 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
-     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
-_GL_CXXALIASWARN1 (strchrnul, char *, (char *__s, int __c_in));
-_GL_CXXALIASWARN1 (strchrnul, char const *, (char const *__s, int __c_in));
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \
+         || defined __clang__)
+_GL_CXXALIASWARN1 (strchrnul, char *, (char *__s, int __c_in) throw ());
+_GL_CXXALIASWARN1 (strchrnul, char const *,
+                   (char const *__s, int __c_in) throw ());
 # else
 _GL_CXXALIASWARN (strchrnul);
 # endif
@@ -549,22 +585,35 @@ _GL_WARN_ON_USE (strncat, "strncat is unportable - "
 #   undef strndup
 #   define strndup rpl_strndup
 #  endif
-_GL_FUNCDECL_RPL (strndup, char *, (char const *__s, size_t __n)
-                                   _GL_ARG_NONNULL ((1)));
+_GL_FUNCDECL_RPL (strndup, char *,
+                  (char const *__s, size_t __n)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
 _GL_CXXALIAS_RPL (strndup, char *, (char const *__s, size_t __n));
 # else
-#  if ! @HAVE_DECL_STRNDUP@
-_GL_FUNCDECL_SYS (strndup, char *, (char const *__s, size_t __n)
-                                   _GL_ARG_NONNULL ((1)));
+#  if !@HAVE_DECL_STRNDUP@ || (__GNUC__ >= 11 && !defined strndup)
+_GL_FUNCDECL_SYS (strndup, char *,
+                  (char const *__s, size_t __n)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
 #  endif
 _GL_CXXALIAS_SYS (strndup, char *, (char const *__s, size_t __n));
 # endif
 _GL_CXXALIASWARN (strndup);
-#elif defined GNULIB_POSIXCHECK
-# undef strndup
-# if HAVE_RAW_DECL_STRNDUP
+#else
+# if __GNUC__ >= 11 && !defined strndup
+/* For -Wmismatched-dealloc: Associate strndup with free or rpl_free.  */
+_GL_FUNCDECL_SYS (strndup, char *,
+                  (char const *__s, size_t __n)
+                  _GL_ARG_NONNULL ((1))
+                  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef strndup
+#  if HAVE_RAW_DECL_STRNDUP
 _GL_WARN_ON_USE (strndup, "strndup is unportable - "
                  "use gnulib module strndup for portability");
+#  endif
 # endif
 #endif
 
@@ -624,10 +673,11 @@ _GL_CXXALIAS_SYS_CAST2 (strpbrk,
                         char *, (char const *__s, char const *__accept),
                         const char *, (char const *__s, char const *__accept));
 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
-     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
-_GL_CXXALIASWARN1 (strpbrk, char *, (char *__s, char const *__accept));
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \
+         || defined __clang__)
+_GL_CXXALIASWARN1 (strpbrk, char *, (char *__s, char const *__accept) throw ());
 _GL_CXXALIASWARN1 (strpbrk, char const *,
-                   (char const *__s, char const *__accept));
+                   (char const *__s, char const *__accept) throw ());
 # elif __GLIBC__ >= 2
 _GL_CXXALIASWARN (strpbrk);
 # endif
@@ -732,10 +782,12 @@ _GL_CXXALIAS_SYS_CAST2 (strstr,
                         const char *, (const char *haystack, const char *needle));
 # endif
 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
-     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
-_GL_CXXALIASWARN1 (strstr, char *, (char *haystack, const char *needle));
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \
+         || defined __clang__)
+_GL_CXXALIASWARN1 (strstr, char *,
+                   (char *haystack, const char *needle) throw ());
 _GL_CXXALIASWARN1 (strstr, const char *,
-                   (const char *haystack, const char *needle));
+                   (const char *haystack, const char *needle) throw ());
 # elif __GLIBC__ >= 2
 _GL_CXXALIASWARN (strstr);
 # endif
@@ -781,10 +833,12 @@ _GL_CXXALIAS_SYS_CAST2 (strcasestr,
                         const char *, (const char *haystack, const char *needle));
 # endif
 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
-     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
-_GL_CXXALIASWARN1 (strcasestr, char *, (char *haystack, const char *needle));
+     && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \
+         || defined __clang__)
+_GL_CXXALIASWARN1 (strcasestr, char *,
+                   (char *haystack, const char *needle) throw ());
 _GL_CXXALIASWARN1 (strcasestr, const char *,
-                   (const char *haystack, const char *needle));
+                   (const char *haystack, const char *needle) throw ());
 # else
 _GL_CXXALIASWARN (strcasestr);
 # endif