[PATCH] Do not allow -mabi=ms and -fsanitize={,kernel-}address (PR sanitizer/87930).

[Martin Liška]

Hi.

The patch reject usage of the mentioned options.

Ready for trunk?
Thanks,
Martin

gcc/ChangeLog:

2018-11-12  Martin Liska  <mli...@suse.cz>

        PR sanitizer/87930
        * config/i386/i386.c (ix86_option_override_internal): Error
        about usage -mabi=ms and -fsanitize={,kernel-}address.
---
 gcc/config/i386/i386.c | 5 +++++
 1 file changed, 5 insertions(+)



diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 711bec0cc9d..b3e0807b894 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -3546,6 +3546,11 @@ ix86_option_override_internal (bool main_args_p,
     error ("-mabi=ms not supported with X32 ABI");
   gcc_assert (opts->x_ix86_abi == SYSV_ABI || opts->x_ix86_abi == MS_ABI);
 
+  if ((opts->x_flag_sanitize & SANITIZE_USER_ADDRESS) && opts->x_ix86_abi == MS_ABI)
+    error ("%<-mabi=ms%> not supported with %<-fsanitize=address%>");
+  if ((opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS) && opts->x_ix86_abi == MS_ABI)
+    error ("%<-mabi=ms%> not supported with %<-fsanitize=kernel-address%>");
+
   /* For targets using ms ABI enable ms-extensions, if not
      explicit turned off.  For non-ms ABI we turn off this
      option.  */