diff --git a/libc/Makefile b/libc/Makefile
index 02be593a..86e335f3 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -437,7 +437,6 @@ stdio/rename.o \
stdio/scanf.o \
stdio/stdio.o \
stdio/tmpfile.o \
-stdio/tmpnam.o \
stdio/vfprintf.o \
stdio/vprintf.o \
stdio/vscanf.o \
diff --git a/libc/include/stdio.h b/libc/include/stdio.h
index fa2d404e..a635265f 100644
--- a/libc/include/stdio.h
+++ b/libc/include/stdio.h
@@ -84,7 +84,7 @@ typedef __off_t fpos_t;
#if __USE_SORTIX || __USE_POSIX
/* TODO: Implement L_ctermid */
-#define L_tmpnam 128
+/* L_tmpnam will not be implemented. */
#endif
/* The possibilities for the third argument to `setvbuf'. */
@@ -101,7 +101,6 @@ typedef __off_t fpos_t;
#endif
#if __USE_SORTIX || __USE_POSIX
-/* Default path prefix for `tempnam' and `tmpnam'. */
#define P_tmpdir "/tmp"
#endif
@@ -212,7 +211,7 @@ int getc_unlocked(FILE* stream);
int getchar_unlocked(void);
int putc_unlocked(int c, FILE* stream);
int putchar_unlocked(int c);
-char* tmpnam(char* s);
+/* tmpnam will not be implemented. */
#endif
#if __USE_POSIX
diff --git a/libc/stdio/tmpnam.cpp b/libc/stdio/tmpnam.cpp
deleted file mode 100644
index 2b336f40..00000000
--- a/libc/stdio/tmpnam.cpp
+++ /dev/null
@@ -1,41 +0,0 @@
-/*******************************************************************************
-
- Copyright(C) Jonas 'Sortie' Termansen 2013.
-
- This file is part of the Sortix C Library.
-
- The Sortix C Library is free software: you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation, either version 3 of the License, or (at your
- option) any later version.
-
- The Sortix C Library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with the Sortix C Library. If not, see .
-
- stdio/tmpnam.cpp
- Create path names for temporary files.
-
-*******************************************************************************/
-
-#include
-#include
-#include
-
-// TODO: Please remove this function and P_tmpdir and L_tmpnam once they have
-// been removed from the C, C++ and POSIX standards.
-extern "C" char* tmpnam(char* s)
-{
- static char static_string[L_tmpnam+1];
- if ( !s )
- s = static_string;
- static int current_index = 0;
- // TODO: This isn't thread safe!
- snprintf(s, L_tmpnam, "%s/tmpnam.pid%ju.%i", P_tmpdir, (uintmax_t) getpid(),
- current_index++);
- return s;
-}