gcc/testsuite/gcc.target/arm/optional_thumb-3.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target arm_cortex_m } */
   3 /* { dg-skip-if "-mthumb given" { *-*-* } { "-mthumb" } } */
   4 /* { dg-options "-marm" } */
   5 /* { dg-error "target CPU does not support ARM mode" "missing error with -marm on Thumb-only targets" { target *-*-* } 0 } */
   6
   7 /* Check that -marm gives an error when compiling for a Thumb-only target.  */
   8
   9 int foo;