File 0001-Fix-illegal-redefinition-of-_Bool.patch of Package ldns

From 9484018bcf9070810593842a2bd760d19c73425d Mon Sep 17 00:00:00 2001
From: Jan Engelhardt <jengelh@inai.de>
Date: Fri, 27 Mar 2026 22:07:33 +0100
Subject: [PATCH] Fix illegal redefinition of _Bool
References: https://github.com/NLnetLabs/ldns/pull/300

ldns does not build under gcc-15/glibc-2.43. The error is:

.. code-block:

	./libtool --tag=CC --quiet --mode=compile gcc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type -flto=auto -g -fno-strict-aliasing -D_GNU_SOURCE -I./include/ldns  -I/usr/include/python3.13 -Wno-unused-variable -Wno-unused-parameter -Wno-missing-field-initializers -fno-strict-aliasing -c ./contrib/python/ldns_wrapper.c -o ldns_wrapper.lo
	In file included from ./ldns/buffer.h:16,
			 from ./include/ldns/ldns.h:96,
			 from ./contrib/python/ldns_wrapper.c:3547:
	/usr/include/assert.h:114:14: error: conflicting types for '__assert_single_arg'; have 'signed char(signed char)'
	  114 | extern _Bool __assert_single_arg (_Bool);
	      |              ^~~~~~~~~~~~~~~~~~~
	In file included from /usr/include/python3.13/Python.h:20,
			 from ./contrib/python/ldns_wrapper.c:203:
	/usr/include/assert.h:114:14: note: previous declaration of '__assert_single_arg' with type '_Bool(_Bool)'
	  114 | extern _Bool __assert_single_arg (_Bool);
	      |              ^~~~~~~~~~~~~~~~~~~

The reduced test case is:

.. code-block:: c

	#include <assert.h>
	#define _Bool signed char
	#include <assert.h>
	// gcc-15 -c -std=c23 1.c

Identifiers starting with an underscore are reserved for the
implementation. Redefinining them can break compilation in funny ways
(like this).

Stop redefinining/redeclaring internal identifiers. Delete references
to the autoconf manual, because they too have removed that ugly
snippet in commit v2.72a-68-g6f2aadd7 .
---
 ldns/common.h.in | 22 +++++++++-------------
 1 file changed, 9 insertions(+), 13 deletions(-)

diff --git a/ldns/common.h.in b/ldns/common.h.in
index db559608..c3ea5441 100644
--- a/ldns/common.h.in
+++ b/ldns/common.h.in
@@ -32,26 +32,22 @@
 #define LDNS_BUILD_CONFIG_USE_ED448        @ldns_build_config_use_ed448@
 
 /*
- * HAVE_STDBOOL_H is not available when distributed as a library, but no build 
- * configuration variables may be used (like those above) because the header
- * is sometimes only available when using special compiler flags to enable the
- * c99 environment. Because we cannot force the usage of this flag, we have to
- * provide a default type. Below what is suggested by the autoconf manual.
+ * HAVE_* macros are a recipe for name clashes, and the ldns build does not
+ * produce reasonably namespaced macro definitions for library use. Until that
+ * is addressed, do something resembling a snippet from an older autoconf
+ * manual.
  */
 /*@ignore@*/
 /* splint barfs on this construct */
 #ifndef __bool_true_false_are_defined
-# ifdef HAVE_STDBOOL_H
+# if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199900L) || defined(HAVE_STDBOOL_H)
 #  include <stdbool.h>
 # else
-#  ifndef HAVE__BOOL
-#   ifdef __cplusplus
-typedef bool _Bool;
-#   else
-#    define _Bool signed char
-#   endif
+#  ifdef HAVE__BOOL
+#    define bool _Bool
+#  else
+#    define bool signed char
 #  endif
-#  define bool _Bool
 #  define false 0
 #  define true 1
 #  define __bool_true_false_are_defined 1
-- 
2.53.0