Update to gcc11

Change to openssl
Clean up some `C` for HitchHiker specific utils

distfiles/Makefile

@@ -72,6 +72,7 @@ mpc-${mpc_version}.tar.gz \
 mpfr-${mpfr_version}.tar.xz \
 musl-$(musl_version).tar.gz \
 musl-fts-$(musl-fts_version).tar.gz \
+openssl-${openssl_version}.tar.gz \
 ncurses-${ncurses_version}.tar.gz \
 netbsd-curses-${netbsd-curses_version}.tar.xz \
 ninja-${ninja_version}.tar.gz \
@@ -440,6 +441,11 @@ ninja: ninja-${ninja_version}.tar.gz
 ninja-${ninja_version}.tar.gz:
 	wget -c ${github}/ninja-build/ninja/archive/v${ninja_version}/$@
 
+openssl: openssl-${openssl_version}.tar.gz
+
+openssl-${openssl_version}.tar.gz:
+	wget -c https://www.openssl.org/source/$@
+
 patch: patch-${patch_version}.tar.xz
 
 patch-${patch_version}.tar.xz:

include/mk/src-config.mk

@@ -4,7 +4,7 @@
 include versions.mk
 os_name        = Hitch Hiker Linux
 os_abbrev      = hhl
-os_version     = 2021q2
+os_version     = 2021q4
 basedir        = /src
 include $(basedir)/config.mk
 
@@ -68,7 +68,7 @@ objdir        ?= $(global_objdir)/$(distfullname)
 tooldir        = $(basedir)/build/toolchain-$(arch)
 
 export LC_ALL  = POSIX
-export PATH    = $(tooldir)/bin:$(tooldir)/sbin:/usr/bin:/usr/sbin:/bin:/sbin
+export PATH    = $(tooldir)/bin:$(tooldir)/sbin:/usr/bin:/usr/bin/core_perl:/usr/sbin:/bin:/sbin
 
 _dhcpcd       ?= 1
 _wireless     ?= 1

include/mk/versions.mk

@@ -9,7 +9,7 @@ attr_version = 2.4.48
 autoconf_version = 2.71
 automake_version = 1.16.3
 bc_version = 3.2.5
-binutils_version = 2.36.1
+binutils_version = 2.37
 bison_version = 3.7.5
 busybox_version = 1.31.1
 bzip2_version = 1.0.8
@@ -25,11 +25,11 @@ elfutils_version = 0.182
 eudev_version = 3.2.9
 execline_version = 2.7.0.1
 expat_version = 2.2.10
-file_version = 5.39
+file_version = 5.40
 findutils_version = 4.8.0
 flex_version = 2.6.4
-gawk_version = 5.1.0
+gawk_version = 5.1.1
-gcc_version = 10.2.0
+gcc_version = 11.2.0
 gdbm_version = 1.19
 gettext_version = 0.21
 gettext-tiny_version = 0.3.2
@@ -38,7 +38,7 @@ gmp_version = 6.2.1
 gperf_version = 3.1
 grep_version = 3.6
 groff_version = 1.22.4
-grub_version = 2.04
+grub_version = 2.06
 gzip_version = 1.10
 haveged_version = 1.9.14
 iana-etc_version = 20210115
@@ -56,9 +56,9 @@ libnl_version = 3.5.0
 libressl_version = 3.0.2
 libtool_version = 2.4.6
 libz_version = 1.2.8.2015.12.26
-linux_version = 5.11.5
+linux_version = 5.16.1
 linux_rpi_version = 5.4.45
-m4_version = 1.4.18
+m4_version = 1.4.19
 make_version = 4.3
 man-pages_version = 5.10
 mandoc_version = 1.14.5
@@ -67,15 +67,16 @@ mpc_version = 1.2.1
 mpfr_version = 4.1.0
 musl_version = 1.2.2
 musl-fts_version = 1.2.7
+openssl_version = 3.0.1
 ncurses_version = 6.2
 netbsd-curses_version = 0.3.1
 ninja_version = 1.10.2
 patch_version = 2.7.6
-pcre_version = 8.44
+pcre_version = 8.45
 perl_version = 5.32.1
 perl-cross_version = 1.3.5
 pkg-config_version = 0.29.2
-pkgsrc_version = 2020Q2
+pkgsrc_version = 2020Q3
 procps-ng_version = 3.3.16
 psmisc_version = 23.3
 python_version = 3.9.1
@@ -87,13 +88,13 @@ shadow_version = 4.8.1
 skalibs_version = 2.10.0.1
 sysklogd_version = 1.5.1
 tar_version = 1.33
-texinfo_version = 6.7
+texinfo_version = 6.8
 tzdata_version = 2021a
 u-boot_version = 2021.01
 udev-lfs_version = 20171102
 util-linux_version = 2.36.1
 vim_version = 8.2.2433
-wget_version = 1.21.1
+wget_version = 1.21.2
 wireless_tools_version = 29
 wpa_supplicant_version = 2.9
 XML-Parser_version = 2.46

toolchain/Makefile

@@ -17,6 +17,9 @@ endif
 ifeq ($(build_python), 1)
 subdirs += python
 endif
+ifeq ($(build_file), 1)
+subdirs += file
+endif
 subdirs += binutils
 subdirs += gcc-pass1
 subdirs += linux-headers

toolchain/file/Makefile

@@ -0,0 +1,8 @@
+#  Makefile - hhl - /usr/src/world/gawk
+#  Copyright 2020 Nathan Fisher <nfisher.sr@gmail.com>
+#
+distname = file
+distext  = gz
+include toolchain.mk
+config_opts += --disable-nls
+include targets.mk

world/Makefile

@@ -44,10 +44,11 @@ subdirs += expat
 subdirs += kmod
 subdirs += gettext
 # for musl
-subdirs += argp-standalone
+#subdirs += argp-standalone
 subdirs += elfutils
 subdirs += libffi
-subdirs += libressl
+#subdirs += libressl
+subdirs += openssl
 subdirs += wget
 #subdirs += python
 #subdirs += ninja
@@ -65,8 +66,6 @@ subdirs += texinfo
 subdirs += procps-ng
 subdirs += util-linux
 # for musl
-#subdirs += argp-standalone
-# for musl
 #subdirs += musl-fts
 subdirs += e2fsprogs
 subdirs += haveged

world/bin/head/src/head.c

@@ -29,7 +29,8 @@
 #define _GNU_SOURCE   // getline, getopt
 
 #include <ctype.h>    // isprint
-#include <err.h>      // err
+#include <err.h>      // err, perror
+#include <errno.h>    // errno
 #include <inttypes.h> // uint*_t
 #include <libgen.h>   // basename
 #include <stdio.h>    // fclose, fopen, getline, nread, perror, printf
@@ -87,6 +88,23 @@ void _head(char *file) {
   }
 }
 
+long parselong(char *buf) {
+  errno = 0;
+  char *endptr;
+  int num = strtol(optarg, &endptr, 10);
+  if (errno != 0) {
+        perror("Error parsing integer from input: ");
+        exit(EXIT_FAILURE);
+  } else if (num == 0 && endptr == optarg) {
+        fprintf(stderr, "Error: invalid input: %s\n", optarg);
+        exit(EXIT_FAILURE);
+  } else if (*endptr != '\0') {
+        fprintf(stderr, "Error: invalid input: %s\n", optarg);
+        exit(EXIT_FAILURE);
+  }
+  return num;
+}
+
 int main(int argc, char *argv[]) {
   int c, index;
   __progname = basename(argv[0]);
@@ -109,7 +127,7 @@ int main(int argc, char *argv[]) {
     switch (c) {
     case 'c':
       cflag = 1;
-      chars = (int)strtol(optarg, NULL, 10);
+      chars = (int)parselong(optarg);
       break;
     case 'q':
       qflag = 1;
@@ -124,7 +142,7 @@ int main(int argc, char *argv[]) {
       exit(EXIT_SUCCESS);
     case 'n':
       nflag = 1;
-      lines = (int)strtol(optarg, NULL, 10);
+      lines = (int)parselong(optarg);
       break;
     case '0':
     case '1':

world/bin/hostname/src/hostname.c

@@ -28,13 +28,13 @@
 
 #define _DEFAULT_SOURCE
 
-#include <sys/param.h>
+#include <sys/param.h> // HOST_NAME_MAX
 
-#include <libgen.h>
+#include <libgen.h>    // basename
-#include <stdio.h>
+#include <stdio.h>     // printf, fprintf
-#include <stdlib.h>
+#include <stdlib.h>    // exit
-#include <string.h>
+#include <string.h>    // strlen
-#include <unistd.h>
+#include <unistd.h>    // gethostname, sethostname, getopt
 
 static const char *__progname;
 

world/gcc/Makefile

@@ -2,6 +2,7 @@
 #  Copyright 2020 Nathan Fisher <nfisher.sr@gmail.com>
 #
 distname     = gcc
+patches      = gcc-nostdinc.patch
 include world.mk
 
 ifeq ($(arch),x86_64)

world/gcc/gcc-nostdinc.patch

@@ -0,0 +1,11 @@
+--- gcc-11.2.0.orig/configure	2021-07-28 02:55:06.628278148 -0400
++++ gcc-11.2.0.new/configure	2021-10-19 11:51:51.300514740 -0400
+@@ -16478,7 +16478,7 @@
+ fi
+ 
+ 
+-RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
++RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET -nostdinc++"
+ 
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking where to find the target ar" >&5
+ $as_echo_n "checking where to find the target ar... " >&6; }

world/m4/Makefile

@@ -2,7 +2,6 @@
 #  Copyright 2020 Nathan Fisher <nfisher.sr@gmail.com>
 #
 distname     = m4
-patches      = m4-glibc-fixes.patch
 include world.mk
 config_opts += --host=$(tgt)
 CFLAGS      += --sysroot=$(DESTDIR)

world/m4/m4-glibc-fixes.patch

@@ -1,107 +0,0 @@
-diff -Naur m4-1.4.18.orig/lib/fflush.c m4-1.4.18/lib/fflush.c
---- m4-1.4.18.orig/lib/fflush.c	2016-12-31 08:54:41.000000000 -0500
-+++ m4-1.4.18/lib/fflush.c	2020-05-19 16:21:43.578036277 -0400
-@@ -33,7 +33,7 @@
- #undef fflush
- 
- 
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
- 
- /* Clear the stream's ungetc buffer, preserving the value of ftello (fp).  */
- static void
-@@ -72,7 +72,7 @@
- 
- #endif
- 
--#if ! (defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
-+#if ! (defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
- 
- # if (defined __sferror || defined __DragonFly__ || defined __ANDROID__) && defined __SNPT
- /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
-@@ -148,7 +148,7 @@
-   if (stream == NULL || ! freading (stream))
-     return fflush (stream);
- 
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
- 
-   clear_ungetc_buffer_preserving_position (stream);
- 
-diff -Naur m4-1.4.18.orig/lib/fpending.c m4-1.4.18/lib/fpending.c
---- m4-1.4.18.orig/lib/fpending.c	2016-12-31 08:54:41.000000000 -0500
-+++ m4-1.4.18/lib/fpending.c	2020-05-19 16:21:43.578036277 -0400
-@@ -32,7 +32,7 @@
-   /* Most systems provide FILE as a struct and the necessary bitmask in
-      <stdio.h>, because they need it for implementing getc() and putc() as
-      fast macros.  */
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-   return fp->_IO_write_ptr - fp->_IO_write_base;
- #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
-   /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
-diff -Naur m4-1.4.18.orig/lib/fpurge.c m4-1.4.18/lib/fpurge.c
---- m4-1.4.18.orig/lib/fpurge.c	2016-12-31 08:54:41.000000000 -0500
-+++ m4-1.4.18/lib/fpurge.c	2020-05-19 16:21:43.578036277 -0400
-@@ -62,7 +62,7 @@
-   /* Most systems provide FILE as a struct and the necessary bitmask in
-      <stdio.h>, because they need it for implementing getc() and putc() as
-      fast macros.  */
--# if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-   fp->_IO_read_end = fp->_IO_read_ptr;
-   fp->_IO_write_ptr = fp->_IO_write_base;
-   /* Avoid memory leak when there is an active ungetc buffer.  */
-diff -Naur m4-1.4.18.orig/lib/freadahead.c m4-1.4.18/lib/freadahead.c
---- m4-1.4.18.orig/lib/freadahead.c	2016-12-31 08:54:41.000000000 -0500
-+++ m4-1.4.18/lib/freadahead.c	2020-05-19 16:21:43.578036277 -0400
-@@ -25,7 +25,7 @@
- size_t
- freadahead (FILE *fp)
- {
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-   if (fp->_IO_write_ptr > fp->_IO_write_base)
-     return 0;
-   return (fp->_IO_read_end - fp->_IO_read_ptr)
-diff -Naur m4-1.4.18.orig/lib/freading.c m4-1.4.18/lib/freading.c
---- m4-1.4.18.orig/lib/freading.c	2016-12-31 08:54:41.000000000 -0500
-+++ m4-1.4.18/lib/freading.c	2020-05-19 16:21:43.578036277 -0400
-@@ -31,7 +31,7 @@
-   /* Most systems provide FILE as a struct and the necessary bitmask in
-      <stdio.h>, because they need it for implementing getc() and putc() as
-      fast macros.  */
--# if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-   return ((fp->_flags & _IO_NO_WRITES) != 0
-           || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
-               && fp->_IO_read_base != NULL));
-diff -Naur m4-1.4.18.orig/lib/fseeko.c m4-1.4.18/lib/fseeko.c
---- m4-1.4.18.orig/lib/fseeko.c	2016-12-31 08:54:41.000000000 -0500
-+++ m4-1.4.18/lib/fseeko.c	2020-05-19 16:21:43.578036277 -0400
-@@ -47,7 +47,7 @@
- #endif
- 
-   /* These tests are based on fpurge.c.  */
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-   if (fp->_IO_read_end == fp->_IO_read_ptr
-       && fp->_IO_write_ptr == fp->_IO_write_base
-       && fp->_IO_save_base == NULL)
-@@ -123,7 +123,7 @@
-           return -1;
-         }
- 
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-       fp->_flags &= ~_IO_EOF_SEEN;
-       fp->_offset = pos;
- #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
-diff -Naur m4-1.4.18.orig/lib/stdio-impl.h m4-1.4.18/lib/stdio-impl.h
---- m4-1.4.18.orig/lib/stdio-impl.h	2016-12-31 08:54:42.000000000 -0500
-+++ m4-1.4.18/lib/stdio-impl.h	2020-05-19 16:21:43.601369662 -0400
-@@ -138,3 +138,4 @@
- # define _IOERR   0x10
- 
- #endif
-+#define _IO_IN_BACKUP 0x100

world/openssl/Makefile

@@ -0,0 +1,37 @@
+#  Makefile - hhl - /usr/src/world/openssl
+#  Copyright 2020 Nathan Fisher <nfisher.sr@gmail.com>
+#
+distname        = openssl
+distext         = gz
+include world.mk
+
+config_cmd      = cd $(objdir) && $(srcdir)/Configure $(config_opts)
+export CFLAGS   = --sysroot=$(DESTDIR)
+
+ifeq (aarch64, $(arch))
+  config_opts  += linux-aarch64
+endif
+ifeq (riscv64, $(arch))
+  config_opts  += linux64-riscv64
+endif
+ifeq (x86_64, $(arch))
+  config_opts  += linux-x86_64
+endif
+ifeq ($(filter i486 i586 i686, $(arch)), $(arch))
+  config_opts  += linux-x86
+endif
+ifeq (i486, $(arch))
+  export CFLAGS = -latomic
+endif
+ifeq (armv7l, $(arch))
+  config_opts  += linux-generic32
+  export CFLAGS = -latomic
+endif
+
+config_opts    += --cross-compile-prefix=$(tgt)-
+config_opts    += --openssldir=/etc/ssl
+config_opts    += --libdir=/usr/lib
+config_opts    += shared
+consif_opts    += zlib-dynamic
+
+include targets.mk

world/usr.bin/42/src/42.c

@@ -28,12 +28,11 @@
 
 #define _GNU_SOURCE
 
-#include <dirent.h>
+#include <dirent.h>  // opendir, rewinddir, readdir
-#include <stdio.h>
+#include <stdio.h>   // fopen, fclose, fwrite
-#include <stdlib.h>
+#include <stdlib.h>  // exit, srand
-#include <string.h>
+#include <string.h>  // strncat, strcmp, strdup
-#include <time.h>
+#include <time.h>    // time
-#include <unistd.h>
 
 #include "config.h"
 

world/usr.bin/basename/src/basename.c

@@ -28,12 +28,12 @@
 
 #define _XOPEN_SOURCE
 
-#include <err.h>
+#include <err.h>     // err
-#include <libgen.h>
+#include <libgen.h>  // basename
-#include <stdio.h>
+#include <stdio.h>   // fprintf, puts
-#include <stdlib.h>
+#include <stdlib.h>  // exit
-#include <string.h>
+#include <string.h>  // strlen, strcmp
-#include <unistd.h>
+#include <unistd.h>  // getopt
 
 static const char *__progname;
 

world/usr.bin/dirname/src/dirname.c

@@ -28,12 +28,11 @@
 
 #define _XOPEN_SOURCE
 
-#include <err.h>
+#include <err.h>     // err
-#include <libgen.h>
+#include <libgen.h>  // basename, dirname
-#include <stdio.h>
+#include <stdio.h>   // fprintf, puts
-#include <stdlib.h>
+#include <stdlib.h>  // exit
-#include <string.h>
+#include <unistd.h>  // getopt
-#include <unistd.h>
 
 static const char *__progname;
 

world/usr.bin/link/src/link.c

@@ -27,11 +27,11 @@
  */
 #define _XOPEN_SOURCE
 
-#include <ctype.h>
+#include <ctype.h>   // isprint
-#include <libgen.h>
+#include <libgen.h>  // basename
-#include <stdio.h>
+#include <stdio.h>   // fprintf
-#include <stdlib.h>
+#include <stdlib.h>  // exit
-#include <unistd.h>
+#include <unistd.h>  // getopt, link
 
 static const char *__progname;
 

world/usr.bin/nproc/src/nproc.c

@@ -28,13 +28,13 @@
 
 #define _DEFAULT_SOURCE
 
-#include <sys/sysinfo.h>
+#include <sys/sysinfo.h>  // get_nprocs, get_nprocs_conf
 
-#include <ctype.h>
+#include <ctype.h>        // isprint
-#include <libgen.h>
+#include <libgen.h>       // basename
-#include <stdio.h>
+#include <stdio.h>        // fprintf, printf
-#include <stdlib.h>
+#include <stdlib.h>       // exit
-#include <unistd.h>
+#include <unistd.h>       // getopt
 
 static const char *__progname;
 

world/usr.bin/realpath/src/realpath.c

@@ -28,13 +28,12 @@
 
 #define _DEFAULT_SOURCE
 
-#include <err.h>
+#include <err.h>     // warn
-#include <libgen.h>
+#include <libgen.h>  // basename
-#include <limits.h>
+#include <limits.h>  // realpath
-#include <stdio.h>
+#include <stdio.h>   // fprintf
-#include <stdlib.h>
+#include <stdlib.h>  // exit, realpath
-#include <string.h>
+#include <unistd.h>  // getopt, access
-#include <unistd.h>
 
 static const char *__progname;
 

world/usr.bin/shred/src/shred.c

@@ -27,13 +27,14 @@
  */
 #define _XOPEN_SOURCE
 
-#include <ctype.h>
+#include <ctype.h>     // isprint
-#include <inttypes.h>
+#include <errno.h>     // errno
-#include <libgen.h>
+#include <stdint.h>    // uint8_t
-#include <stdio.h>
+#include <libgen.h>    // basename
-#include <stdlib.h>
+#include <stdio.h>     // fopen, fclose, fseek, ftell, fflush, fwrite
-#include <string.h>
+#include <stdlib.h>    // exit, system
-#include <unistd.h>
+#include <string.h>    // strcomp
+#include <unistd.h>    // getopt
 
 static const char *__progname;
 const int slice = 4096; // read/write 4k at a time
@@ -204,6 +205,23 @@ int _unlinkit(char *file) {
   }
 }
 
+long parselong(char *buf) {
+  errno = 0;
+  char *endptr;
+  int num = strtol(optarg, &endptr, 10);
+  if (errno != 0) {
+        perror("Error parsing integer from input: ");
+        exit(EXIT_FAILURE);
+  } else if (num == 0 && endptr == optarg) {
+        fprintf(stderr, "Error: invalid input: %s\n", optarg);
+        exit(EXIT_FAILURE);
+  } else if (*endptr != '\0') {
+        fprintf(stderr, "Error: invalid input: %s\n", optarg);
+        exit(EXIT_FAILURE);
+  }
+  return num;
+}
+
 int main(int argc, char *argv[]) {
   unsigned int index;
   unsigned int c;
@@ -216,7 +234,7 @@ int main(int argc, char *argv[]) {
       return 0;
       break;
     case 'n':
-      pass = strtol(optarg, NULL, 10);
+      pass = parselong(optarg);
       break;
     case 'S':
       Sflag = 1;

world/usr.bin/unlink/src/unlink.c

@@ -28,11 +28,11 @@
 
 #define _XOPEN_SOURCE
 
-#include <ctype.h>
+#include <ctype.h>   // isprint
-#include <libgen.h>
+#include <libgen.h>  // basename
-#include <stdio.h>
+#include <stdio.h>   // fprintf, printf
-#include <stdlib.h>
+#include <stdlib.h>  // exit
-#include <unistd.h>
+#include <unistd.h>  // getopt, unlink
 
 static const char *__progname;
 int vflag;

world/usr.bin/yes/src/yes.c

@@ -26,7 +26,7 @@
  *
  */
 
-#include <stdio.h>
+#include <stdio.h>  // puts
 
 int main(int argc, char * argv[]) {
   char * y;