[PATCH] [dfsan] New __dfsan_set_label runtime function.

[Peter Collingbourne]

Hi eugenis,

http://llvm-reviews.chandlerc.com/D1396

Files:
  lib/dfsan/dfsan.cc

Index: lib/dfsan/dfsan.cc
===================================================================
--- lib/dfsan/dfsan.cc
+++ lib/dfsan/dfsan.cc
@@ -156,13 +156,18 @@
   return label;
 }
 
-SANITIZER_INTERFACE_ATTRIBUTE
-void dfsan_set_label(dfsan_label label, void *addr, size_t size) {
+extern "C" SANITIZER_INTERFACE_ATTRIBUTE
+void __dfsan_set_label(dfsan_label label, void *addr, size_t size) {
   for (dfsan_label *labelp = shadow_for(addr); size != 0; --size, ++labelp)
     *labelp = label;
 }
 
 SANITIZER_INTERFACE_ATTRIBUTE
+void dfsan_set_label(dfsan_label label, void *addr, size_t size) {
+  __dfsan_set_label(label, addr, size);
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
 void dfsan_add_label(dfsan_label label, void *addr, size_t size) {
   for (dfsan_label *labelp = shadow_for(addr); size != 0; --size, ++labelp)
     if (*labelp != label)
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