Index: include/sanitizer/common_interface_defs.h
===================================================================
--- include/sanitizer/common_interface_defs.h
+++ include/sanitizer/common_interface_defs.h
@@ -182,6 +182,12 @@
   void __sanitizer_finish_switch_fiber(void *fake_stack_save,
                                        const void **bottom_old,
                                        size_t *size_old);
+
+  // Get full module name and calculate pc offset within it.
+  // Returns 1 if pc belongs to some module, 0 if module was not found.
+  int __sanitizer_get_module_and_offset_for_pc(void* pc,
+      char *module_path, size_t module_path_len, void **pc_offset);
+
 #ifdef __cplusplus
 }  // extern "C"
 #endif
Index: lib/asan/asan_win_dll_thunk.cc
===================================================================
--- lib/asan/asan_win_dll_thunk.cc
+++ lib/asan/asan_win_dll_thunk.cc
@@ -366,6 +366,7 @@
 INTERFACE_FUNCTION(__sanitizer_install_malloc_and_free_hooks)
 INTERFACE_FUNCTION(__sanitizer_start_switch_fiber)
 INTERFACE_FUNCTION(__sanitizer_finish_switch_fiber)
+INTERFACE_FUNCTION(__sanitizer_get_module_and_offset_for_pc)
 
 // TODO(timurrrr): Add more interface functions on the as-needed basis.
 
Index: lib/sanitizer_common/sanitizer_common.h
===================================================================
--- lib/sanitizer_common/sanitizer_common.h
+++ lib/sanitizer_common/sanitizer_common.h
@@ -709,6 +709,8 @@
   static const uptr kInitialCapacity = 1 << 14;
 };
 
+
+
 // Callback type for iterating over a set of memory ranges.
 typedef void (*RangeIteratorCallback)(uptr begin, uptr end, void *arg);
 
Index: lib/sanitizer_common/sanitizer_common_libcdep.cc
===================================================================
--- lib/sanitizer_common/sanitizer_common_libcdep.cc
+++ lib/sanitizer_common/sanitizer_common_libcdep.cc
@@ -169,6 +169,23 @@
 #endif
 }
 
+static int GetModuleAndOffsetForPc(uptr pc, char *module_name,
+    uptr module_name_len, uptr* pc_offset) {
+  ListOfModules modules;
+  modules.init();
+
+  const char *found_module_name = nullptr;
+  bool ok = Symbolizer::GetOrInit()->GetModuleNameAndOffsetForPC(
+      pc, &found_module_name, pc_offset);
+
+  if (!ok)
+    return false;
+
+  internal_strncpy(module_name, found_module_name, module_name_len);
+  return true;
+}
+
+
 }  // namespace __sanitizer
 
 void NOINLINE
@@ -177,3 +194,12 @@
   if (__sanitizer::sandboxing_callback)
     __sanitizer::sandboxing_callback();
 }
+
+extern "C" SANITIZER_INTERFACE_ATTRIBUTE
+int __sanitizer_get_module_and_offset_for_pc(void *pc, // NOLINT
+    char *module_name, uptr module_name_len, void** pc_offset) {
+  return __sanitizer::GetModuleAndOffsetForPc(
+      reinterpret_cast<uptr>(pc), module_name, module_name_len,
+      reinterpret_cast<uptr*>(pc_offset));
+}
+
Index: test/sanitizer_common/TestCases/get_module_and_offset_for_pc.cc
===================================================================
--- /dev/null
+++ test/sanitizer_common/TestCases/get_module_and_offset_for_pc.cc
@@ -0,0 +1,30 @@
+// RUN: %clangxx -v -O0 %s -o %t
+// RUN: %run %t 2>&1 | FileCheck %s
+// UNSUPPORTED: i386-darwin
+//
+// Tests __sanitizer_get_module_and_offset_for_pc.
+#include <stdio.h>
+#include <sanitizer/common_interface_defs.h>
+
+void Test(void* pc) {
+  char module_name[1024];
+  void *offset;
+  int ok = __sanitizer_get_module_and_offset_for_pc(pc, module_name, sizeof(module_name),
+      &offset);
+  if (!ok) {
+    printf("NOT FOUND: %p\n", pc);
+  } else {
+    printf("FOUND: %s %p\n", module_name, offset);
+  }
+}
+
+void TestCallerPc() {
+  Test(__builtin_return_address(0));
+}
+
+int main() {
+  Test(0);
+  TestCallerPc();
+}
+// CHECK: NOT FOUND: (nil)
+// CHECK-NEXT: FOUND: {{.*}}/get_module_and_offset_for_pc.cc.tmp