[Bug target/67484] options-save.c sanitizer asan detects freed storage referenced heap-use-after-free

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67484

--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
Patch in testing:

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Index: config/i386/i386.c
===================================================================
--- config/i386/i386.c  (revision 227777)
+++ config/i386/i386.c  (working copy)
@@ -5080,12 +5080,14 @@ ix86_valid_target_attribute_tree (tree args,
       /* If we are using the default tune= or arch=, undo the string assigned,
         and use the default.  */
       if (option_strings[IX86_FUNCTION_SPECIFIC_ARCH])
-       opts->x_ix86_arch_string = option_strings[IX86_FUNCTION_SPECIFIC_ARCH];
+       opts->x_ix86_arch_string
+         = xstrdup (option_strings[IX86_FUNCTION_SPECIFIC_ARCH]);
       else if (!orig_arch_specified)
        opts->x_ix86_arch_string = NULL;

       if (option_strings[IX86_FUNCTION_SPECIFIC_TUNE])
-       opts->x_ix86_tune_string = option_strings[IX86_FUNCTION_SPECIFIC_TUNE];
+       opts->x_ix86_tune_string
+         = xstrdup (option_strings[IX86_FUNCTION_SPECIFIC_TUNE]);
       else if (orig_tune_defaulted)
        opts->x_ix86_tune_string = NULL;

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