Unbloat build config

- 10.5% reduction of o//depend dependency graph
- 8.8% reduction in latency of make command
- Fix issue with temporary file cleanup

There's a new -w option in compile.com that turns off the recent
Landlock output path workaround for "good commands" which do not
unlink() the output file like GNU tooling does.

Our new GNU Make unveil sandboxing appears to have zero overhead
in the grand scheme of things. Full builds are pretty fast since
the only thing that's actually slowed us down is probably libcxx

    make -j16 MODE=rel
    RL: took 85,732,063µs wall time
    RL: ballooned to 323,612kb in size
    RL: needed 828,560,521µs cpu (11% kernel)
    RL: caused 39,080,670 page faults (99% memcpy)
    RL: 350,073 context switches (72% consensual)
    RL: performed 0 reads and 11,494,960 write i/o operations

pledge() and unveil() no longer consider ENOSYS to be an error.
These functions have also been added to Python's cosmo module.

This change also removes some WIN32 APIs and System Five magnums
which we're not using and it's doubtful anyone else would be too

libc/stdio/appendw.c

@@ -18,7 +18,9 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/assert.h"
 #include "libc/bits/bits.h"
+#include "libc/dce.h"
 #include "libc/macros.internal.h"
+#include "libc/mem/mem.h"
 #include "libc/nexgen32e/bsr.h"
 #include "libc/stdio/append.internal.h"
 

libc/stdio/clearerr.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/dtoa.c

@@ -29,6 +29,7 @@
 #include "libc/fmt/internal.h"
 #include "libc/macros.internal.h"
 #include "libc/nexgen32e/bsr.h"
+#include "libc/str/str.h"
 #include "third_party/gdtoa/gdtoa.h"
 
 /**
@@ -293,12 +294,10 @@ int __fmt_dtoa(int (*out)(const char *, void *, size_t), void *arg, int d,
         if ((flags & FLAGS_ZEROPAD)) {
           if (sign) __FMT_PUT(sign);
           sign = 0;
-          do
-            __FMT_PUT('0');
+          do __FMT_PUT('0');
           while (--width > 0);
         } else
-          do
-            __FMT_PUT(' ');
+          do __FMT_PUT(' ');
           while (--width > 0);
       }
       if (sign) __FMT_PUT(sign);
@@ -410,12 +409,10 @@ int __fmt_dtoa(int (*out)(const char *, void *, size_t), void *arg, int d,
         if ((flags & FLAGS_ZEROPAD)) {
           if (sign) __FMT_PUT(sign);
           sign = 0;
-          do
-            __FMT_PUT('0');
+          do __FMT_PUT('0');
           while (--width > 0);
         } else
-          do
-            __FMT_PUT(' ');
+          do __FMT_PUT(' ');
           while (--width > 0);
       }
       if (sign) __FMT_PUT(sign);
@@ -485,16 +482,14 @@ int __fmt_dtoa(int (*out)(const char *, void *, size_t), void *arg, int d,
       }
       if ((width -= prec1) > 0 && !(flags & FLAGS_LEFT) &&
           !(flags & FLAGS_ZEROPAD)) {
-        do
-          __FMT_PUT(' ');
+        do __FMT_PUT(' ');
         while (--width > 0);
       }
       if (sign) __FMT_PUT(sign);
       __FMT_PUT('0');
       __FMT_PUT(alphabet[17]);
       if ((flags & FLAGS_ZEROPAD) && width > 0 && !(flags & FLAGS_LEFT)) {
-        do
-          __FMT_PUT('0');
+        do __FMT_PUT('0');
         while (--width > 0);
       }
       i1 = prec1 & 7;
@@ -512,8 +507,7 @@ int __fmt_dtoa(int (*out)(const char *, void *, size_t), void *arg, int d,
           --prec1;
         }
         if ((flags & FLAGS_HASH) && prec > 0) {
-          do
-            __FMT_PUT(0);
+          do __FMT_PUT(0);
           while (--prec > 0);
         }
       }

libc/stdio/dumphexc.c

@@ -17,6 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/macros.internal.h"
+#include "libc/mem/mem.h"
 #include "libc/stdio/append.internal.h"
 #include "libc/stdio/hex.internal.h"
 #include "libc/str/str.h"

libc/stdio/feof.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/ferror.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fflush.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fgetc.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fgetln.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fgets.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fgetwc.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fgetws.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fileno.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 #include "libc/sysv/errfuns.h"
 

libc/stdio/flockfile.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/flushlbf.c

@@ -20,6 +20,7 @@
 #include "libc/intrin/pthread.h"
 #include "libc/intrin/spinlock.h"
 #include "libc/stdio/fflush.internal.h"
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 #include "libc/stdio/stdio_ext.h"
 

libc/stdio/fprintf.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fputc.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fputs.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fputwc.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fputws.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/fread.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/freopen.c

@@ -17,6 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/calls.h"
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 #include "libc/sysv/consts/f.h"
 #include "libc/sysv/consts/fd.h"

libc/stdio/fseeko.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/ftello.c

@@ -20,6 +20,7 @@
 #include "libc/errno.h"
 #include "libc/runtime/runtime.h"
 #include "libc/stdio/internal.h"
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 #include "libc/sysv/consts/o.h"
 

libc/stdio/fwrite.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/getdelim.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/getdelim_unlocked.c

@@ -18,6 +18,7 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/calls.h"
 #include "libc/errno.h"
+#include "libc/mem/mem.h"
 #include "libc/stdio/stdio.h"
 #include "libc/str/str.h"
 #include "libc/sysv/consts/o.h"

libc/stdio/kvappendf.c

@@ -17,6 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/assert.h"
+#include "libc/dce.h"
 #include "libc/intrin/kprintf.h"
 #include "libc/macros.internal.h"
 #include "libc/mem/mem.h"

libc/stdio/lock.h

@@ -0,0 +1,25 @@
+#ifndef COSMOPOLITAN_LIBC_STDIO_LOCK_H_
+#define COSMOPOLITAN_LIBC_STDIO_LOCK_H_
+#include "libc/intrin/nopl.h"
+#include "libc/nexgen32e/threaded.h"
+#include "libc/stdio/stdio.h"
+#if !(__ASSEMBLER__ + __LINKER__ + 0)
+COSMOPOLITAN_C_START_
+
+void flockfile(FILE *) paramsnonnull();
+void funlockfile(FILE *) paramsnonnull();
+int ftrylockfile(FILE *) paramsnonnull();
+
+#ifdef _NOPL1
+#define flockfile(f)    _NOPL1("__threadcalls", flockfile, f)
+#define funlockfile(f)  _NOPL1("__threadcalls", funlockfile, f)
+#define ftrylockfile(f) _NOPL1("__threadcalls", ftrylockfile, f)
+#else
+#define flockfile(f)    (__threaded ? flockfile(f) : 0)
+#define funlockfile(f)  (__threaded ? funlockfile(f) : 0)
+#define ftrylockfile(f) (__threaded ? ftrylockfile(f) : 0)
+#endif
+
+COSMOPOLITAN_C_END_
+#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
+#endif /* COSMOPOLITAN_LIBC_STDIO_LOCK_H_ */

libc/stdio/mkdtemp.c

@@ -38,10 +38,11 @@
  * @raise EINVAL if template didn't end with XXXXXX
  */
 char *mkdtemp(char *template) {
-  int i, j, n, x;
+  unsigned x;
+  int i, j, n;
   if ((n = strlen(template)) >= 6 && !memcmp(template + n - 6, "XXXXXX", 6)) {
-    x = rand64();
     for (i = 0; i < 10; ++i) {
+      x = rand64();
       for (j = 0; j < 6; ++j) {
         template[n - 6 + j] = "0123456789abcdefghijklmnopqrstuvwxyz"[x % 36];
         x /= 36;

libc/stdio/puts.c

@@ -16,7 +16,9 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
+#include "libc/str/str.h"
 
 static inline int PutsImpl(const char *s, FILE *f) {
   size_t n, r;

libc/stdio/rewind.c

@@ -17,6 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/calls.h"
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/setvbuf.c

@@ -16,6 +16,8 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/runtime/runtime.h"
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 #include "libc/sysv/errfuns.h"
 

libc/stdio/stdio.h

@@ -1,10 +1,7 @@
 #ifndef COSMOPOLITAN_LIBC_STDIO_STDIO_H_
 #define COSMOPOLITAN_LIBC_STDIO_STDIO_H_
 #include "libc/fmt/pflink.h"
-#include "libc/intrin/nopl.h"
 #include "libc/intrin/pthread.h"
-#include "libc/nexgen32e/threaded.h"
-#include "libc/runtime/symbolic.h"
 
 #define _STDIO_H
 #define L_ctermid    20
@@ -130,9 +127,6 @@ int fwide(FILE *, int);
 │ cosmopolitan § standard i/o » without mutexes                            ─╬─│┼
 ╚────────────────────────────────────────────────────────────────────────────│*/
 
-void flockfile(FILE *) paramsnonnull();
-void funlockfile(FILE *) paramsnonnull();
-int ftrylockfile(FILE *) paramsnonnull();
 int getc_unlocked(FILE *) paramsnonnull();
 int getchar_unlocked(void);
 int putc_unlocked(int, FILE *) paramsnonnull();
@@ -179,16 +173,6 @@ int vfprintf_unlocked(FILE *, const char *, va_list)
 #define putc_unlocked(c, f)  fputc_unlocked(c, f)
 #define putwc_unlocked(c, f) fputwc_unlocked(c, f)
 
-#ifdef _NOPL1
-#define flockfile(f)    _NOPL1("__threadcalls", flockfile, f)
-#define funlockfile(f)  _NOPL1("__threadcalls", funlockfile, f)
-#define ftrylockfile(f) _NOPL1("__threadcalls", ftrylockfile, f)
-#else
-#define flockfile(f)    (__threaded ? flockfile(f) : 0)
-#define funlockfile(f)  (__threaded ? funlockfile(f) : 0)
-#define ftrylockfile(f) (__threaded ? ftrylockfile(f) : 0)
-#endif
-
 #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
 /* clang-format off */
 #define printf(FMT, ...)     (printf)(PFLINK(FMT), ##__VA_ARGS__)
@@ -204,10 +188,6 @@ int vfprintf_unlocked(FILE *, const char *, va_list)
 /* clang-format on */
 #endif
 
-#define stdin  SYMBOLIC(stdin)
-#define stdout SYMBOLIC(stdout)
-#define stderr SYMBOLIC(stderr)
-
 COSMOPOLITAN_C_END_
 #endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_STDIO_STDIO_H_ */

libc/stdio/tmpfile.c

@@ -16,31 +16,60 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/bits/safemacros.internal.h"
 #include "libc/calls/calls.h"
-#include "libc/fmt/fmt.h"
-#include "libc/macros.internal.h"
+#include "libc/errno.h"
+#include "libc/rand/rand.h"
 #include "libc/runtime/runtime.h"
-#include "libc/stdio/stdio.h"
 #include "libc/stdio/temp.h"
 #include "libc/str/str.h"
+#include "libc/sysv/consts/o.h"
 
 /**
- * Creates a temporary file.
+ * Opens stream backed by anonymous file.
+ *
+ * We use $TMPDIR or /tmp to create a temporary file securely, which
+ * will be unlink()'d before this function returns. The file content
+ * will be released from disk once fclose() is called.
  *
  * @see mkostempsm(), kTmpPath
+ * @asyncsignalsafe
+ * @threadsafe
+ * @vforksafe
  */
 FILE *tmpfile(void) {
-  int fd;
-  char *tmp, *sep, tpl[PATH_MAX];
-  tmp = firstnonnull(getenv("TMPDIR"), kTmpPath);
-  sep = !isempty(tmp) && !endswith(tmp, "/") ? "/" : "";
-  if ((snprintf)(tpl, PATH_MAX, "%s%stmp.%s.XXXXXX", tmp, sep,
-                 firstnonnull(program_invocation_short_name, "unknown")) <=
-      PATH_MAX) {
-    if ((fd = mkostemps(tpl, 0, 0)) != -1) {
-      return fdopen(fd, "w+");
+  FILE *f;
+  unsigned x;
+  int fd, i, j, e;
+  char path[PATH_MAX], *p;
+  p = path;
+  p = stpcpy(p, kTmpPath);
+  p = stpcpy(p, "tmp.");
+  if (program_invocation_short_name &&
+      strlen(program_invocation_short_name) < 128) {
+    p = stpcpy(p, program_invocation_short_name);
+    *p++ = '.';
+  }
+  for (i = 0; i < 10; ++i) {
+    x = rand64();
+    for (j = 0; j < 6; ++j) {
+      p[j] = "0123456789abcdefghijklmnopqrstuvwxyz"[x % 36];
+      x /= 36;
+    }
+    p[j] = 0;
+    e = errno;
+    if ((fd = open(path, O_RDWR | O_CREAT | O_EXCL, 0600)) != -1) {
+      unlink(path);
+      if ((f = fdopen(fd, "w+"))) {
+        return f;
+      } else {
+        close(fd);
+        return 0;
+      }
+    } else if (errno == EEXIST) {
+      errno = e;
+    } else {
+      break;
     }
   }
-  return NULL;
+  return 0;
 }

libc/stdio/ungetc.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/ungetwc.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**

libc/stdio/vappendf.c

@@ -17,6 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/assert.h"
+#include "libc/dce.h"
 #include "libc/fmt/fmt.h"
 #include "libc/macros.internal.h"
 #include "libc/mem/mem.h"

libc/stdio/vfprintf.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/lock.h"
 #include "libc/stdio/stdio.h"
 
 /**