config/bootstrap-hwasan.mk

   1 # This option enables -fsanitize=hwaddress for stage2 and stage3.
   2 # We need to disable random frame tags for bootstrap since the autoconf check
   3 # for which direction the stack is growing has UB that a random frame tag
   4 # breaks.  Running with a random frame tag gives approx. 50% chance of
   5 # bootstrap comparison diff in libiberty/alloca.c.
   6
   7 STAGE2_CFLAGS += -fsanitize=hwaddress --param hwasan-random-frame-tag=0
   8 STAGE3_CFLAGS += -fsanitize=hwaddress --param hwasan-random-frame-tag=0
   9 POSTSTAGE1_LDFLAGS += -fsanitize=hwaddress -static-libhwasan \
  10                       -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/ \
  11                       -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/hwasan/ \
  12                       -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/hwasan/.libs