Disable -Wl,--as-needed in sanitizer mode.

build/config/compiler/BUILD.gn

 # Copyright (c) 2013 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/android/config.gni")
 if (cpu_arch == "arm") {
   import("//build/config/arm.gni")
 }
 if (cpu_arch == "mipsel" || cpu_arch == "mips64el") {
   import("//build/config/mips.gni")
@@ skipping 930 matching lines @@
     if (symbol_level == 2) {
       # Mac dead code stripping requires symbols.
       common_optimize_on_ldflags += [ "-Wl,-dead_strip" ]
     }
   } else {
     # Non-Mac Posix linker flags.
     common_optimize_on_ldflags += [
       # Specifically tell the linker to perform optimizations.
       # See http://lwn.net/Articles/192624/ .
       "-Wl,-O1",
-      "-Wl,--as-needed",
       "-Wl,--gc-sections",
     ]
+
+    if (!using_sanitizer) {
+      # Functions interposed by the sanitizers can make ld think
+      # that some libraries aren't needed when they actually are,
+      # http://crbug.com/234010. As workaround, disable --as-needed.
+      common_optimize_on_ldflags += [ "-Wl,--as-needed" ]
+    }
   }
 }
 
 # Default "optimization on" config. On Windows, this favors size over speed.
 config("optimize") {
   cflags = common_optimize_on_cflags
   ldflags = common_optimize_on_ldflags
   if (is_win) {
     cflags += [ "/Os" ]  # favor size over speed.
   } else if (is_android || is_ios) {
@@ skipping 86 matching lines @@
       cflags += [ "-gsplit-dwarf" ]
     }
   }
 }
 
 config("no_symbols") {
   if (!is_win) {
     cflags = [ "-g0" ]
   }
 }