+2014-02-05 Yury Gribov <y.gribov@samsung.com>
+
+ * cif-code.def (ATTRIBUTE_MISMATCH): New CIF code.
+ * ipa-inline.c (report_inline_failed_reason): Handle mismatched
+ sanitization attributes.
+ (can_inline_edge_p): Likewise.
+ (sanitize_attrs_match_for_inline_p): New function.
+
2014-02-04 Jan Hubicka <hubicka@ucw.cz>
* ipa-prop.c (detect_type_change): Shor circuit testing of
/* We can't inline because the callee refers to comdat-local symbols. */
DEFCIFCODE(USES_COMDAT_LOCAL, CIF_FINAL_NORMAL,
N_("callee refers to comdat-local symbols"))
+
+/* We can't inline because of mismatched caller/callee attributes. */
+DEFCIFCODE(ATTRIBUTE_MISMATCH, CIF_FINAL_NORMAL,
+ N_("function attribute mismatch"))
}
}
-/* Decide if we can inline the edge and possibly update
+ /* Decide whether sanitizer-related attributes allow inlining. */
+
+static bool
+sanitize_attrs_match_for_inline_p (const_tree caller, const_tree callee)
+{
+ /* Don't care if sanitizer is disabled */
+ if (!(flag_sanitize & SANITIZE_ADDRESS))
+ return true;
+
+ if (!caller || !callee)
+ return true;
+
+ return !!lookup_attribute ("no_sanitize_address",
+ DECL_ATTRIBUTES (caller)) ==
+ !!lookup_attribute ("no_sanitize_address",
+ DECL_ATTRIBUTES (callee));
+}
+
+ /* Decide if we can inline the edge and possibly update
inline_failed reason.
We check whether inlining is possible at all and whether
caller growth limits allow doing so.
e->inline_failed = CIF_TARGET_OPTION_MISMATCH;
inlinable = false;
}
+ /* Don't inline a function with mismatched sanitization attributes. */
+ else if (!sanitize_attrs_match_for_inline_p (e->caller->decl, callee->decl))
+ {
+ e->inline_failed = CIF_ATTRIBUTE_MISMATCH;
+ inlinable = false;
+ }
/* Check if caller growth allows the inlining. */
else if (!DECL_DISREGARD_INLINE_LIMITS (callee->decl)
&& !disregard_limits
+2014-02-05 Yury Gribov <y.gribov@samsung.com>
+
+ * gcc.dg/asan/nosanitize-and-inline.c: : New test.
+
2014-02-04 Jan Hubicka <hubicka@ucw.cz>
* g++.dg/ipa/devirrt-22.C: Fix template.
--- /dev/null
+/* { dg-do run } */
+
+/* This is a simplified version of what Emacs does internally,
+ when marking its stack. */
+
+static unsigned long sum;
+static void *stack_base;
+
+/* A simple substitute for what Emacs actually does. */
+static void
+mark_maybe_pointer (void *p)
+{
+ sum ^= (unsigned long) p;
+}
+
+static inline void __attribute__ ((no_sanitize_address))
+mark_memory (void **start, void **end)
+{
+ void **pp;
+
+ if (end < start)
+ {
+ void **tem = start;
+ start = end;
+ end = tem;
+ }
+
+ for (pp = start; pp < end; pp++)
+ {
+ /* This is the dereference that we don't want sanitized. */
+ void *p = *pp;
+
+ mark_maybe_pointer (p);
+ }
+}
+
+static void
+mark_stack (void)
+{
+ void *end;
+ mark_memory (stack_base, &end);
+}
+
+void
+garbage_collect (void)
+{
+ mark_stack ();
+}
+
+int
+main (void)
+{
+ void *dummy;
+ stack_base = &dummy;
+ garbage_collect ();
+ return 0;
+}