Avoid compiler warnings on 64-bit native Windows. Reported by Wilfredo Velázquez-Rodríguez at <https://savannah.gnu.org/bugs/?68178>. * lib/genaliases.c (emit_encoding): Emit a cast to size_t, not 'long'. * lib/genaliases2.c (emit_encoding): Likewise. * lib/iconv.c (sysdep_aliases): Cast to size_t, not 'long'.

diff --git a/ChangeLog b/ChangeLog
index 451374e..f5a804a 100644
--- a/ChangeLog
+++ b/ChangeLog

@@ -1,5 +1,14 @@
 2026-03-26  Bruno Haible  <bruno@clisp.org>
 
+	Avoid compiler warnings on 64-bit native Windows.
+	Reported by Wilfredo Velázquez-Rodríguez at
+	<https://savannah.gnu.org/bugs/?68178>.
+	* lib/genaliases.c (emit_encoding): Emit a cast to size_t, not 'long'.
+	* lib/genaliases2.c (emit_encoding): Likewise.
+	* lib/iconv.c (sysdep_aliases): Cast to size_t, not 'long'.
+
+2026-03-26  Bruno Haible  <bruno@clisp.org>
+
 	Switch to autoconf 2.73.
 	* autogen.sh: Update comment.
 

diff --git a/lib/genaliases.c b/lib/genaliases.c
index 8260681..be5c627 100644
--- a/lib/genaliases.c
+++ b/lib/genaliases.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1999-2001, 2003, 2005, 2008, 2012, 2017, 2023 Free Software Foundation, Inc.
+/* Copyright (C) 1999-2026 Free Software Foundation, Inc.
    This file is part of the GNU LIBICONV Library.
 
    The GNU LIBICONV Library is free software; you can redistribute it
@@ -60,7 +60,11 @@
       putc(c, out2);
     }
   }
-  fprintf(out2,"\")' tmp.h | sed -e 's|^.*\\(stringpool_str[0-9]*\\).*$|  (int)(long)\\&((struct stringpool_t *)0)->\\1,|'\n");
+  /* Use a cast to 'size_t', as an approximation to 'uintptr_t'.  On most
+     platforms, the types 'long' and 'unsigned long' do work as well, but on
+     64-bit native Windows platforms, they don't have the same size as pointers
+     and therefore generate warnings.  */
+  fprintf(out2,"\")' tmp.h | sed -e 's|^.*\\(stringpool_str[0-9]*\\).*$|  (int)(size_t)\\&((struct stringpool_t *)0)->\\1,|'\n");
   for (; n > 0; names++, n--)
     emit_alias(out1, *names, c_name);
 }

diff --git a/lib/genaliases2.c b/lib/genaliases2.c
index 4b7942e..554d197 100644
--- a/lib/genaliases2.c
+++ b/lib/genaliases2.c

@@ -43,7 +43,11 @@
 
 static void emit_encoding (FILE* out1, FILE* out2, const char* tag, const char* const* names, size_t n, const char* c_name)
 {
-  fprintf(out2,"  (int)(long)&((struct stringpool2_t *)0)->stringpool_%s_%u,\n",tag,counter);
+  /* Use a cast to 'size_t', as an approximation to 'uintptr_t'.  On most
+     platforms, the types 'long' and 'unsigned long' do work as well, but on
+     64-bit native Windows platforms, they don't have the same size as pointers
+     and therefore generate warnings.  */
+  fprintf(out2,"  (int)(size_t)&((struct stringpool2_t *)0)->stringpool_%s_%u,\n",tag,counter);
   for (; n > 0; names++, n--)
     emit_alias(out1, tag, *names, c_name);
 }

diff --git a/lib/iconv.c b/lib/iconv.c
index ec704cf..0767ca6 100644
--- a/lib/iconv.c
+++ b/lib/iconv.c

@@ -190,7 +190,7 @@
 };
 #define stringpool2 ((const char *) &stringpool2_contents)
 static const struct alias sysdep_aliases[] = {
-#define S(tag,name,encoding_index) { (int)(long)&((struct stringpool2_t *)0)->stringpool_##tag, encoding_index },
+#define S(tag,name,encoding_index) { (int)(size_t)&((struct stringpool2_t *)0)->stringpool_##tag, encoding_index },
 #include "aliases2.h"
 #undef S
 };