diff --git a/libc/bionic/malloc_common.cpp b/libc/bionic/malloc_common.cpp
index edd697d..bb3aade 100644
--- a/libc/bionic/malloc_common.cpp
+++ b/libc/bionic/malloc_common.cpp
@@ -41,6 +41,7 @@
 //                          get_malloc_leak_info.
 //   write_malloc_leak_info: Writes the leak info data to a file.
 
+#include <errno.h>
 #include <stdint.h>
 #include <stdio.h>
 
@@ -265,6 +266,11 @@
 
 extern "C" void __sanitizer_malloc_enable() {
 }
+
+extern "C" int __sanitizer_malloc_info(int, FILE*) {
+  errno = ENOTSUP;
+  return -1;
+}
 #endif
 // =============================================================================
 
diff --git a/libc/bionic/malloc_common.h b/libc/bionic/malloc_common.h
index e3326cf..7bfa33a 100644
--- a/libc/bionic/malloc_common.h
+++ b/libc/bionic/malloc_common.h
@@ -29,6 +29,7 @@
 #pragma once
 
 #include <stdatomic.h>
+#include <stdio.h>
 
 #include <async_safe/log.h>
 #include <private/bionic_globals.h>
@@ -46,6 +47,7 @@
                         void* arg);
 void __sanitizer_malloc_disable();
 void __sanitizer_malloc_enable();
+int __sanitizer_malloc_info(int options, FILE* fp);
 
 __END_DECLS