1 files changed, 40 insertions, 0 deletions
diff --git a/include/mcheck.h b/include/mcheck.h
new file mode 100644
index 00000000000..4b11751ebcc
--- /dev/null
+++ b/include/mcheck.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 1996-2024 Free Software Foundation, Inc.
+ * This file is part of the GNU C Library.
+ */
+#ifndef _MCHECK_H
+#define _MCHECK_H       1
+
+/*
+ * Return values for `mprobe': these are the kinds of inconsistencies that
+ * `mcheck' enables detection of.
+ */
+enum mcheck_status {
+	MCHECK_DISABLED = -1,         /* Consistency checking is not turned on.  */
+	MCHECK_OK,                    /* Block is fine.  */
+	MCHECK_FREE,                  /* Block freed twice.  */
+	MCHECK_HEAD,                  /* Memory before the block was clobbered.  */
+	MCHECK_TAIL                   /* Memory after the block was clobbered.  */
+};
+
+typedef void (*mcheck_abortfunc_t)(enum mcheck_status, const void *p);
+
+int mcheck(mcheck_abortfunc_t func);
+
+/*
+ * Similar to `mcheck' but performs checks for all block whenever one of
+ * the memory handling functions is called.  This can be very slow.
+ */
+int mcheck_pedantic(mcheck_abortfunc_t f);
+
+/* Force check of all blocks now.  */
+void mcheck_check_all(void);
+
+/*
+ * Check for aberrations in a particular malloc'd block. These are the
+ * same checks that `mcheck' does, when you free or reallocate a block.
+ */
+enum mcheck_status mprobe(void *__ptr);
+
+#endif