--- gcc/testsuite/gcc.dg/pr126464.c.jj	2026-07-30 09:56:33.400729346 +0200
+++ gcc/testsuite/gcc.dg/pr126464.c	2026-08-04 17:31:18.458149999 +0200
@@ -47,15 +47,19 @@ qux (long double x)
 int
 main ()
 {
+#if __DBL_MAX_10_EXP__ >= 301
   if (!__builtin_isinf ((double) 1e300)
       && __builtin_isinf ((float) 1e300)
       && (foo (-1e300) != -5e299
 	  || baz (1e300) != 5e299))
     __builtin_abort ();
+#endif
 
+#if __LDBL_MAX_10_EXP__ >= 4001
   if (!__builtin_isinf ((long double) 1e4000L)
       && __builtin_isinf ((double) 1e4000L)
       && (bar (1e4000L) != 5e3999L
 	  || qux (-1e4000L) != -5e3999L))
     __builtin_abort ();
+#endif
 }