gcc/testsuite/c-c++-common/hwasan/unprotected-allocas-1.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target hwaddress_exec } */
   3 /* { dg-additional-options "--param hwasan-instrument-allocas=0 -save-temps" } */
   4 /* Only test there's no tagging done when not at -O0.  Without optimisation
   5    the compiler creates a bunch of other variables on the stack other than the
   6    vararray/alloca object.
   7    We also avoid checking when using -flto, since with LTO the compiler can
   8    recognise the vararray is only used with one size and that size is known at
   9    compile time -- when the compiler recognises that it instead creates a
  10    static array, which gets tagged as is expected but not as the test expects.
  11    */
  12 /* { dg-skip-if "" { *-*-* } { "-O0" "-flto" } { "" } } */
  13
  14 #include "unprotected-allocas-0.c"
  15
  16 /* { dg-final { scan-assembler-not "__hwasan_tag_memory" } } */