Apply a patch for whitespace test regressions

unifdef.spec

@@ -2,7 +2,7 @@
 # sense. Older versions of this package installed it as unifdefall.sh; for
 # compatibility on stable branches that had such older versions, we still
 # provide that path via a symlink.
-%bcond all_sh %[ %{defined fc42} || %{defined fc41} || %{defined el10} ]
+%bcond all_sh 1
 
 Name:           unifdef
 Version:        2.12
@@ -38,6 +38,13 @@ Source:         https://dotat.at/prog/unifdef/unifdef-%{version}.tar.xz
 # https://github.com/fanf2/unifdef/pull/14
 Patch:          %{forgeurl}/pull/14.patch
 
+# Fix fgets(..., size=1)
+# https://github.com/fanf2/unifdef/pull/15
+#
+# Further discussion in https://github.com/fanf2/unifdef/pull/19 and
+# https://gcc.gnu.org/PR120205.
+Patch:          %{forgeurl}/pull/15.patch
+
 # Don't use C23 constexpr keyword
 # https://github.com/fanf2/unifdef/pull/19
 # Fixes compatibility with GCC 15, which defaults to C23
@@ -58,22 +65,8 @@ additional text that they delimit, while otherwise leaving the file alone.
 # simplify the License, since unifdef.1 is still BSD-3-Clause.
 rm -rv FreeBSD/
 
-%if %{undefined fc41} && %{undefined el10} && %{undefined el9} && %{undefined el8}
-# Test regressions with GCC 15 / C23 default.
-# Reported upstream by email 2025-05-08.
-# Described in:
-#   https://github.com/fanf2/unifdef/pull/19#issuecomment-2863148452
-for test in whitespace-1 whitespace-2
-do
-  mv "tests/${test}.sh" "tests/${test}.sh.disabled"
-done
-%endif
-
 
 %build
-# Implicit in Fedora and EPEL10+; still needed in EPEL8/9.
-%set_build_flags
-
 %make_build