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diff --git a/src/chkalloc.h b/src/chkalloc.h
new file mode 100644
index 0000000..4375d2c
--- /dev/null
+++ b/src/chkalloc.h
@@ -0,0 +1,26 @@
+#ifndef CHKALLOC_H_
+#define CHKALLOC_H_
+
+#ifdef CHECK_ALLOC
+
+void chk_check(void);
+
+#define chk_malloc(sz)		chk_malloc_impl(sz, __FILE__, __LINE__)
+#define chk_realloc(p, sz)	chk_realloc_impl(p, sz, __FILE__, __LINE__)
+
+void *chk_malloc_impl(int sz, char *file, int line);
+void *chk_realloc_impl(void *ptr, int sz, char *file, int line);
+void chk_free(void *p);
+
+#else	/* !CHECK_ALLOC */
+
+#include <stdlib.h>
+
+#define chk_check()
+#define chk_malloc(sz)		malloc(sz)
+#define chk_realloc(p, sz)	realloc(p, sz)
+#define chk_free(p)			free(p)
+
+#endif	/* CHECK_ALLOC */
+
+#endif	/* CHKALLOC_H_ */