Use rpath for sanitizers.

build/config/gcc/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/sanitizers/sanitizers.gni")
 import("//build/toolchain/toolchain.gni")
 
 # This config causes functions not to be automatically exported from shared
 # libraries. By default, all symbols are exported but this means there are
 # lots of exports that slow everything down. In general we explicitly mark
 # which functiosn we want to export from components.
 #
 # Some third_party code assumes all functions are exported so this is separated
 # into its own config so such libraries can remove this config to make symbols
 # public again.
@@ skipping 45 matching lines @@
 }
 
 # Settings for executables and shared libraries.
 config("executable_ldconfig") {
   if (is_android) {
     ldflags = [
       "-Bdynamic",
       "-Wl,-z,nocopyreloc",
     ]
   } else {
-    if (is_component_build) {
+    # See the rpath_for... config above for why this is necessary for component
+    # builds. Sanitizers use a custom libc++ where this is also necessary.
+    if (is_component_build || using_sanitizer) {
       configs = [ ":rpath_for_built_shared_libraries" ]
     }
 
     ldflags = [
       # TODO(GYP): Do we need a check on the binutils version here?
       #
       # Newer binutils don't set DT_RPATH unless you disable "new" dtags
       # and the new DT_RUNPATH doesn't work without --no-as-needed flag.
       "-Wl,--disable-new-dtags",
     ]
   }
 }
 
 config("no_exceptions") {
   cflags_cc = [ "-fno-exceptions" ]
   cflags_objcc = cflags_cc
 }