autoconf: Fix clang-16 breakage

-Wint-conversion becomes an error by default in clang-16, causing the program_invocation_short_name test to fail. Bug: https://bugs.gentoo.org/893910
cyrusbond · Feb 12, 2023 · 2cebd28 · 2cebd28
1 parent 6426362
commit 2cebd28
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/configure.ac b/configure.ac
@@ -94,15 +94,15 @@ case ${host_os} in
       fi
     fi
     AC_CACHE_CHECK(for program_invocation_short_name, ac_cv_program_invocation_short_name,[
-        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([extern char* program_invocation_short_name;],[return program_invocation_short_name;])],
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([extern char* program_invocation_short_name;],[return program_invocation_short_name[0];])],
             [ac_cv_program_invocation_short_name=yes],
             [ac_cv_program_invocation_short_name=no]
         )
     ])
     if test "x$ac_cv_program_invocation_short_name" = "xyes"; then
         AC_DEFINE(HAVE_PROGRAM_INVOCATION_SHORT_NAME, 1, [Define if you have program_invocation_short_name])
         AC_CACHE_CHECK(if program_invocation_short_name is declared in errno.h, ac_cv_program_invocation_short_name_errno_h,[
-            AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <errno.h>],[return program_invocation_short_name;])],
+            AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <errno.h>],[return program_invocation_short_name[0];])],
                 [ac_cv_program_invocation_short_name_errno_h=yes],
                 [ac_cv_program_invocation_short_name_errno_h=no]
             )