Silence -Winfinite-recursion warning in luaD_throw()

This code should be kept inline with the upstream lua version as much
as possible.  Therefore, we simply want to silence the warning.  This
check was enabled by default as part of -Wall in gcc 12.1.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #13528
Closes #13575

config/always-compiler-options.m4

@@ -204,6 +204,29 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_CC_IMPLICIT_FALLTHROUGH], [
 	AC_SUBST([IMPLICIT_FALLTHROUGH])
 ])
 
+dnl #
+dnl # Check if cc supports -Winfinite-recursion option.
+dnl #
+AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_CC_INFINITE_RECURSION], [
+	AC_MSG_CHECKING([whether $CC supports -Winfinite-recursion])
+
+	saved_flags="$CFLAGS"
+	CFLAGS="$CFLAGS -Werror -Winfinite-recursion"
+
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], [
+		INFINITE_RECURSION=-Winfinite-recursion
+		AC_DEFINE([HAVE_INFINITE_RECURSION], 1,
+			[Define if compiler supports -Winfinite-recursion])
+		AC_MSG_RESULT([yes])
+	], [
+		INFINITE_RECURSION=
+		AC_MSG_RESULT([no])
+	])
+
+	CFLAGS="$saved_flags"
+	AC_SUBST([INFINITE_RECURSION])
+])
+
 dnl #
 dnl # Check if cc supports -fno-omit-frame-pointer option.
 dnl #

config/zfs-build.m4

@@ -210,6 +210,7 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS], [
 	AC_SUBST(CPU_COUNT)
 
 	ZFS_AC_CONFIG_ALWAYS_CC_NO_CLOBBERED
+	ZFS_AC_CONFIG_ALWAYS_CC_INFINITE_RECURSION
 	ZFS_AC_CONFIG_ALWAYS_CC_IMPLICIT_FALLTHROUGH
 	ZFS_AC_CONFIG_ALWAYS_CC_FRAME_LARGER_THAN
 	ZFS_AC_CONFIG_ALWAYS_CC_NO_FORMAT_TRUNCATION

module/lua/ldo.c

@@ -167,6 +167,13 @@ static void seterrorobj (lua_State *L, int errcode, StkId oldtop) {
   L->top = oldtop + 1;
 }
 
+/*
+ * Silence infinite recursion warning which was added to -Wall in gcc 12.1
+ */
+#if defined(HAVE_INFINITE_RECURSION)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Winfinite-recursion"a
+#endif
 
 l_noret luaD_throw (lua_State *L, int errcode) {
   if (L->errorJmp) {  /* thread has an error handler? */
@@ -189,6 +196,10 @@ l_noret luaD_throw (lua_State *L, int errcode) {
   }
 }
 
+#if defined(HAVE_INFINITE_RECURSION)
+#pragma GCC diagnostic pop
+#endif
+
 
 int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
   unsigned short oldnCcalls = L->nCcalls;