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Re: [PATCH 9/17] Initial KAsan support


> The patch was slightly updated to take care of missing UBSan work
> (SANITIZE_FLOAT_DIVIDE, SANITIZE_FLOAT_CAST, SANITIZE_BOUNDS).

--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -868,6 +868,20 @@ finish_options (struct gcc_options *opts, struct 
gcc_options *opts_set,
   /* The -gsplit-dwarf option requires -gpubnames.  */
   if (opts->x_dwarf_split_debug_info)
     opts->x_debug_generate_pub_sections = 1;
+
+  /* Userspace and kernel ASan conflict with each other and with TSan.  */
+
+  if ((flag_sanitize & SANITIZE_USER_ADDRESS)
+      && (flag_sanitize & SANITIZE_KERNEL_ADDRESS))
+    error_at (loc,
+              "-fsanitize=address is incompatible with "
+              "-fsanitize=kernel-address");
+
+  if ((flag_sanitize & SANITIZE_ADDRESS)
+      && (flag_sanitize & SANITIZE_THREAD))
+    error_at (loc,
+              "-fsanitize=address and -fsanitize=kernel-address "
+              "are incompatible with -fsanitize=thread");
 }

Why aren't you using opts->x_ here, like all the code just above?

-- 
Eric Botcazou


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