scripts/Makefile.ubsan

   1 # SPDX-License-Identifier: GPL-2.0
   2
   3 export CFLAGS_UBSAN :=
   4
   5 ifdef CONFIG_UBSAN_ALIGNMENT
   6       CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment)
   7 endif
   8
   9 ifdef CONFIG_UBSAN_BOUNDS
  10       ifdef CONFIG_CC_IS_CLANG
  11             CFLAGS_UBSAN += -fsanitize=array-bounds
  12       else
  13             CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
  14       endif
  15 endif
  16
  17 ifdef CONFIG_UBSAN_LOCAL_BOUNDS
  18       CFLAGS_UBSAN += -fsanitize=local-bounds
  19 endif
  20
  21 ifdef CONFIG_UBSAN_MISC
  22       CFLAGS_UBSAN += $(call cc-option, -fsanitize=shift)
  23       CFLAGS_UBSAN += $(call cc-option, -fsanitize=integer-divide-by-zero)
  24       CFLAGS_UBSAN += $(call cc-option, -fsanitize=unreachable)
  25       CFLAGS_UBSAN += $(call cc-option, -fsanitize=signed-integer-overflow)
  26       CFLAGS_UBSAN += $(call cc-option, -fsanitize=object-size)
  27       CFLAGS_UBSAN += $(call cc-option, -fsanitize=bool)
  28       CFLAGS_UBSAN += $(call cc-option, -fsanitize=enum)
  29 endif
  30
  31 ifdef CONFIG_UBSAN_TRAP
  32       CFLAGS_UBSAN += $(call cc-option, -fsanitize-undefined-trap-on-error)
  33 endif
  34
  35       # -fsanitize=* options makes GCC less smart than usual and
  36       # increase number of 'maybe-uninitialized false-positives
  37       CFLAGS_UBSAN += $(call cc-option, -Wno-maybe-uninitialized)