diff --git a/src/base/process/memory_linux.cc b/src/base/process/memory_linux.cc
index ed3930579f..305196df01 100644
--- a/src/base/process/memory_linux.cc
+++ b/src/base/process/memory_linux.cc
@@ -18,6 +18,13 @@
 #include "base/threading/thread_restrictions.h"
 #include "build/build_config.h"
 
+#if !BUILDFLAG(USE_ALLOCATOR_SHIM) && defined(LIBC_GLIBC)
+extern "C" {
+void* __libc_malloc(size_t size);
+void __libc_free(void* ptr);
+}  // extern "C"
+#endif
+
 namespace base {
 
 namespace {