master 9007e10a0f: Gnulib update via admin/merge-gnulib

[Paul Eggert]

branch: master
commit 9007e10a0fc94190404c6a988f7d52d162901940
Author: Paul Eggert <eggert@cs.ucla.edu>
Commit: Paul Eggert <eggert@cs.ucla.edu>

    Gnulib update via admin/merge-gnulib
---
 lib/cdefs.h       | 12 ++++++------
 lib/libc-config.h | 11 +++++++++++
 lib/md5.h         |  3 +++
 lib/regcomp.c     | 16 +++++++++++++---
 lib/sha1.h        |  3 +++
 lib/sha256.h      |  3 +++
 lib/sha512.h      |  3 +++
 lib/stdlib.in.h   |  4 ++++
 lib/string.in.h   |  4 ++--
 9 files changed, 48 insertions(+), 11 deletions(-)

diff --git a/lib/cdefs.h b/lib/cdefs.h
index cb2514504f..7b8ed5b344 100644
--- a/lib/cdefs.h
+++ b/lib/cdefs.h
@@ -164,13 +164,13 @@
    || (__builtin_constant_p (__l) && (__l) > 0))
 
 /* Length is known to be safe at compile time if the __L * __S <= __OBJSZ
-   condition can be folded to a constant and if it is true.  The -1 check is
-   redundant because since it implies that __glibc_safe_len_cond is true.  */
+   condition can be folded to a constant and if it is true, or unknown (-1) */
 #define __glibc_safe_or_unknown_len(__l, __s, __osz) \
-  (__glibc_unsigned_or_positive (__l)                                        \
-   && __builtin_constant_p (__glibc_safe_len_cond ((__SIZE_TYPE__) (__l),     \
-                                                  __s, __osz))               \
-   && __glibc_safe_len_cond ((__SIZE_TYPE__) (__l), __s, __osz))
+  ((__osz) == (__SIZE_TYPE__) -1                                             \
+   || (__glibc_unsigned_or_positive (__l)                                    \
+       && __builtin_constant_p (__glibc_safe_len_cond ((__SIZE_TYPE__) (__l), \
+                                                      (__s), (__osz)))       \
+       && __glibc_safe_len_cond ((__SIZE_TYPE__) (__l), (__s), (__osz))))
 
 /* Conversely, we know at compile time that the length is unsafe if the
    __L * __S <= __OBJSZ condition can be folded to a constant and if it is
diff --git a/lib/libc-config.h b/lib/libc-config.h
index 8fec489378..a56665b1ce 100644
--- a/lib/libc-config.h
+++ b/lib/libc-config.h
@@ -121,6 +121,7 @@
 # undef __attr_dealloc
 # undef __attr_dealloc_free
 # undef __attribute__
+# undef __attribute_alloc_align__
 # undef __attribute_alloc_size__
 # undef __attribute_artificial__
 # undef __attribute_const__
@@ -129,6 +130,7 @@
 # undef __attribute_format_arg__
 # undef __attribute_format_strfmon__
 # undef __attribute_malloc__
+# undef __attribute_maybe_unused__
 # undef __attribute_noinline__
 # undef __attribute_nonstring__
 # undef __attribute_pure__
@@ -142,16 +144,24 @@
 # undef __extern_always_inline
 # undef __extern_inline
 # undef __flexarr
+# undef __fortified_attr_access
 # undef __fortify_function
 # undef __glibc_c99_flexarr_available
+# undef __glibc_fortify
+# undef __glibc_fortify_n
 # undef __glibc_has_attribute
 # undef __glibc_has_builtin
 # undef __glibc_has_extension
+# undef __glibc_likely
 # undef __glibc_macro_warning
 # undef __glibc_macro_warning1
 # undef __glibc_objsize
 # undef __glibc_objsize0
+# undef __glibc_safe_len_cond
+# undef __glibc_safe_or_unknown_len
 # undef __glibc_unlikely
+# undef __glibc_unsafe_len
+# undef __glibc_unsigned_or_positive
 # undef __inline
 # undef __ptr_t
 # undef __restrict
@@ -159,6 +169,7 @@
 # undef __va_arg_pack
 # undef __va_arg_pack_len
 # undef __warnattr
+# undef __wur
 
 /* Include our copy of glibc <sys/cdefs.h>.  */
 # include <cdefs.h>
diff --git a/lib/md5.h b/lib/md5.h
index 5b92eac5ec..611c230b81 100644
--- a/lib/md5.h
+++ b/lib/md5.h
@@ -24,6 +24,9 @@
 #include <stdint.h>
 
 # if HAVE_OPENSSL_MD5
+#  ifndef OPENSSL_API_COMPAT
+#   define OPENSSL_API_COMPAT 0x10101000L /* FIXME: Use OpenSSL 1.1+ API.  */
+#  endif
 #  include <openssl/md5.h>
 # endif
 
diff --git a/lib/regcomp.c b/lib/regcomp.c
index b607c85320..122c3de58c 100644
--- a/lib/regcomp.c
+++ b/lib/regcomp.c
@@ -2038,15 +2038,25 @@ peek_token_bracket (re_token_t *token, re_string_t 
*input, reg_syntax_t syntax)
     }
   switch (c)
     {
-    case '-':
-      token->type = OP_CHARSET_RANGE;
-      break;
     case ']':
       token->type = OP_CLOSE_BRACKET;
       break;
     case '^':
       token->type = OP_NON_MATCH_LIST;
       break;
+    case '-':
+      /* In V7 Unix grep and Unix awk and mawk, [...---...]
+         (3 adjacent minus signs) stands for a single minus sign.
+         Support that without breaking anything else.  */
+      if (! (re_string_cur_idx (input) + 2 < re_string_length (input)
+             && re_string_peek_byte (input, 1) == '-'
+             && re_string_peek_byte (input, 2) == '-'))
+        {
+          token->type = OP_CHARSET_RANGE;
+          break;
+        }
+      re_string_skip_bytes (input, 2);
+      FALLTHROUGH;
     default:
       token->type = CHARACTER;
     }
diff --git a/lib/sha1.h b/lib/sha1.h
index 098678d8da..bc3470a508 100644
--- a/lib/sha1.h
+++ b/lib/sha1.h
@@ -23,6 +23,9 @@
 # include <stdint.h>
 
 # if HAVE_OPENSSL_SHA1
+#  ifndef OPENSSL_API_COMPAT
+#   define OPENSSL_API_COMPAT 0x10101000L /* FIXME: Use OpenSSL 1.1+ API.  */
+#  endif
 #  include <openssl/sha.h>
 # endif
 
diff --git a/lib/sha256.h b/lib/sha256.h
index dc9d87e615..533173a59e 100644
--- a/lib/sha256.h
+++ b/lib/sha256.h
@@ -22,6 +22,9 @@
 # include <stdint.h>
 
 # if HAVE_OPENSSL_SHA256
+#  ifndef OPENSSL_API_COMPAT
+#   define OPENSSL_API_COMPAT 0x10101000L /* FIXME: Use OpenSSL 1.1+ API.  */
+#  endif
 #  include <openssl/sha.h>
 # endif
 
diff --git a/lib/sha512.h b/lib/sha512.h
index f38819faf0..1eb1870227 100644
--- a/lib/sha512.h
+++ b/lib/sha512.h
@@ -22,6 +22,9 @@
 # include "u64.h"
 
 # if HAVE_OPENSSL_SHA512
+#  ifndef OPENSSL_API_COMPAT
+#   define OPENSSL_API_COMPAT 0x10101000L /* FIXME: Use OpenSSL 1.1+ API.  */
+#  endif
 #  include <openssl/sha.h>
 # endif
 
diff --git a/lib/stdlib.in.h b/lib/stdlib.in.h
index d52c2f7963..a86643c3ca 100644
--- a/lib/stdlib.in.h
+++ b/lib/stdlib.in.h
@@ -184,7 +184,11 @@ _GL_WARN_ON_USE (_Exit, "_Exit is unportable - "
 #   undef free
 #   define free rpl_free
 #  endif
+#  if defined __cplusplus && (__GLIBC__ + (__GLIBC_MINOR__ >= 14) > 2)
+_GL_FUNCDECL_RPL (free, void, (void *ptr) throw ());
+#  else
 _GL_FUNCDECL_RPL (free, void, (void *ptr));
+#  endif
 _GL_CXXALIAS_RPL (free, void, (void *ptr));
 # else
 _GL_CXXALIAS_SYS (free, void, (void *ptr));
diff --git a/lib/string.in.h b/lib/string.in.h
index b6840fa912..33160b2525 100644
--- a/lib/string.in.h
+++ b/lib/string.in.h
@@ -583,7 +583,7 @@ _GL_FUNCDECL_RPL (strndup, char *,
                   _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
 _GL_CXXALIAS_RPL (strndup, char *, (char const *__s, size_t __n));
 # else
-#  if !@HAVE_DECL_STRNDUP@ || __GNUC__ >= 11
+#  if !@HAVE_DECL_STRNDUP@ || (__GNUC__ >= 11 && !defined strndup)
 _GL_FUNCDECL_SYS (strndup, char *,
                   (char const *__s, size_t __n)
                   _GL_ARG_NONNULL ((1))
@@ -593,7 +593,7 @@ _GL_CXXALIAS_SYS (strndup, char *, (char const *__s, size_t 
__n));
 # endif
 _GL_CXXALIASWARN (strndup);
 #else
-# if __GNUC__ >= 11
+# 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)