Rely on C89 <stdlib.h>

The Configure changes here were generated using a version of metaconfig
that copies U/modified/i_stdlib.U from dist/U/vaproto.U, and changes it to
unconditionally define the i_stdlib Configure variable. That variable is
used by a large number of other Configure units, so it's not actually
practical to try and remove the relevant unit entirely.

17 files changed, 107 insertions, 181 deletions

diff --git a/Configure b/Configure
index 703bfbeea6..c5114ff778 100755
--- a/Configure
+++ b/Configure
@@ -5790,6 +5790,107 @@ mc_file=$1;
 shift;
 $cc -o ${mc_file} $optimize $ccflags $ldflags $* ${mc_file}.c $libs;'
 
+: stub, used only to satisfy other units
+i_stdlib='define'
+
+: check for lengths of integral types
+echo " "
+case "$intsize" in
+'')
+	echo "Checking to see how big your integers are..." >&4
+	$cat >try.c <<EOCP
+#include <stdio.h>
+#$i_stdlib I_STDLIB
+#ifdef I_STDLIB
+#include <stdlib.h>
+#endif
+int main()
+{
+	printf("intsize=%d;\n", (int)sizeof(int));
+	printf("longsize=%d;\n", (int)sizeof(long));
+	printf("shortsize=%d;\n", (int)sizeof(short));
+	exit(0);
+}
+EOCP
+	set try
+	if eval $compile_ok && $run ./try > /dev/null; then
+		eval `$run ./try`
+		echo "Your integers are $intsize bytes long."
+		echo "Your long integers are $longsize bytes long."
+		echo "Your short integers are $shortsize bytes long."
+	else
+		$cat >&4 <<EOM
+!
+Help! I can't compile and run the intsize test program: please enlighten me!
+(This is probably a misconfiguration in your system or libraries, and
+you really ought to fix it.  Still, I'll try anyway.)
+!
+EOM
+		dflt=4
+		rp="What is the size of an integer (in bytes)?"
+		. ./myread
+		intsize="$ans"
+		dflt=$intsize
+		rp="What is the size of a long integer (in bytes)?"
+		. ./myread
+		longsize="$ans"
+		dflt=2
+		rp="What is the size of a short integer (in bytes)?"
+		. ./myread
+		shortsize="$ans"
+	fi
+	;;
+esac
+$rm_try
+
+: check for long long
+echo " "
+echo "Checking to see if you have long long..." >&4
+echo 'int main() { long long x = 7; return 0; }' > try.c
+set try
+if eval $compile; then
+	val="$define"
+	echo "You have long long."
+else
+	val="$undef"
+	echo "You do not have long long."
+fi
+$rm_try
+set d_longlong
+eval $setvar
+
+: check for length of long long
+case "${d_longlong}${longlongsize}" in
+$define)
+	echo " "
+	echo "Checking to see how big your long longs are..." >&4
+	$cat >try.c <<'EOCP'
+#include <stdio.h>
+int main()
+{
+    printf("%d\n", (int)sizeof(long long));
+    return(0);
+}
+EOCP
+	set try
+	if eval $compile_ok; then
+		longlongsize=`$run ./try`
+		echo "Your long longs are $longlongsize bytes long."
+	else
+		dflt='8'
+		echo " "
+		echo "(I can't seem to compile the test program.  Guessing...)"
+		rp="What is the size of a long long (in bytes)?"
+		. ./myread
+		longlongsize="$ans"
+	fi
+	if $test "X$longsize" = "X$longlongsize"; then
+		echo "(That isn't any different from an ordinary long.)"
+	fi
+	;;
+esac
+$rm_try
+
 : determine filename position in cpp output
 echo " "
 echo "Computing filename position in cpp output for #include directives..." >&4
@@ -5902,108 +6003,6 @@ do set $yyy; var=$2; eval "was=\$$2";
 	set $yyy; shift; shift; yyy=$@;
 done'
 
-: see if stdlib is available
-set stdlib.h i_stdlib
-eval $inhdr
-
-: check for lengths of integral types
-echo " "
-case "$intsize" in
-'')
-	echo "Checking to see how big your integers are..." >&4
-	$cat >try.c <<EOCP
-#include <stdio.h>
-#$i_stdlib I_STDLIB
-#ifdef I_STDLIB
-#include <stdlib.h>
-#endif
-int main()
-{
-	printf("intsize=%d;\n", (int)sizeof(int));
-	printf("longsize=%d;\n", (int)sizeof(long));
-	printf("shortsize=%d;\n", (int)sizeof(short));
-	exit(0);
-}
-EOCP
-	set try
-	if eval $compile_ok && $run ./try > /dev/null; then
-		eval `$run ./try`
-		echo "Your integers are $intsize bytes long."
-		echo "Your long integers are $longsize bytes long."
-		echo "Your short integers are $shortsize bytes long."
-	else
-		$cat >&4 <<EOM
-!
-Help! I can't compile and run the intsize test program: please enlighten me!
-(This is probably a misconfiguration in your system or libraries, and
-you really ought to fix it.  Still, I'll try anyway.)
-!
-EOM
-		dflt=4
-		rp="What is the size of an integer (in bytes)?"
-		. ./myread
-		intsize="$ans"
-		dflt=$intsize
-		rp="What is the size of a long integer (in bytes)?"
-		. ./myread
-		longsize="$ans"
-		dflt=2
-		rp="What is the size of a short integer (in bytes)?"
-		. ./myread
-		shortsize="$ans"
-	fi
-	;;
-esac
-$rm_try
-
-: check for long long
-echo " "
-echo "Checking to see if you have long long..." >&4
-echo 'int main() { long long x = 7; return 0; }' > try.c
-set try
-if eval $compile; then
-	val="$define"
-	echo "You have long long."
-else
-	val="$undef"
-	echo "You do not have long long."
-fi
-$rm_try
-set d_longlong
-eval $setvar
-
-: check for length of long long
-case "${d_longlong}${longlongsize}" in
-$define)
-	echo " "
-	echo "Checking to see how big your long longs are..." >&4
-	$cat >try.c <<'EOCP'
-#include <stdio.h>
-int main()
-{
-    printf("%d\n", (int)sizeof(long long));
-    return(0);
-}
-EOCP
-	set try
-	if eval $compile_ok; then
-		longlongsize=`$run ./try`
-		echo "Your long longs are $longlongsize bytes long."
-	else
-		dflt='8'
-		echo " "
-		echo "(I can't seem to compile the test program.  Guessing...)"
-		rp="What is the size of a long long (in bytes)?"
-		. ./myread
-		longlongsize="$ans"
-	fi
-	if $test "X$longsize" = "X$longlongsize"; then
-		echo "(That isn't any different from an ordinary long.)"
-	fi
-	;;
-esac
-$rm_try
-
 : see if inttypes.h is available
 : we want a real compile instead of Inhdr because some systems
 : have an inttypes.h which includes non-existent headers
diff --git a/NetWare/config_H.wc b/NetWare/config_H.wc
index 8598a5a8a1..1ed624a499 100644
--- a/NetWare/config_H.wc
+++ b/NetWare/config_H.wc
@@ -730,12 +730,6 @@
  */
 #define I_STDDEF	/**/
 
-/* I_STDLIB:
- *	This symbol, if defined, indicates that <stdlib.h> exists and should
- *	be included.
- */
-#define I_STDLIB		/**/
-
 /* I_STRING:
  *	This symbol, if defined, indicates to the C program that it should
  *	include <string.h> (USG systems) instead of <strings.h> (BSD systems).
diff --git a/Porting/Glossary b/Porting/Glossary
index df598c0464..5fcaeec9a8 100644
--- a/Porting/Glossary
+++ b/Porting/Glossary
@@ -3616,11 +3616,6 @@ i_stdint (i_stdint.U):
 	indicates to the C program that <stdint.h> exists and should
 	be included.
 
-i_stdlib (i_stdlib.U):
-	This variable conditionally defines the I_STDLIB symbol, which
-	indicates to the C program that <stdlib.h> exists and should
-	be included.
-
 i_string (i_string.U):
 	This variable conditionally defines the I_STRING symbol, which
 	indicates that <string.h> should be included rather than <strings.h>.
diff --git a/Porting/config_H b/Porting/config_H
index 97622adcd0..000fa36d2a 100644
--- a/Porting/config_H
+++ b/Porting/config_H
@@ -682,12 +682,6 @@
  */
 #define I_STDDEF	/**/
 
-/* I_STDLIB:
- *	This symbol, if defined, indicates that <stdlib.h> exists and should
- *	be included.
- */
-#define I_STDLIB		/**/
-
 /* I_STRING:
  *	This symbol, if defined, indicates to the C program that it should
  *	include <string.h> (USG systems) instead of <strings.h> (BSD systems).
diff --git a/cflags.SH b/cflags.SH
index dc373c798d..fd2a2c24e4 100755
--- a/cflags.SH
+++ b/cflags.SH
@@ -73,9 +73,7 @@ cat >_cflags.c <<__EOT__
 #include <setjmp.h>
 /* Just in case the inclusion of perl.h did not
  * pull in enough system headers, let's try again. */
-#ifdef I_STDLIB
 #include <stdlib.h>
-#endif
 #ifdef I_STDDEF
 #include <stddef.h>
 #endif
diff --git a/config_h.SH b/config_h.SH
index a8c9672796..5e259a1e89 100755
--- a/config_h.SH
+++ b/config_h.SH
@@ -731,12 +731,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$i_stddef I_STDDEF	/**/
 
-/* I_STDLIB:
- *	This symbol, if defined, indicates that <stdlib.h> exists and should
- *	be included.
- */
-#$i_stdlib I_STDLIB		/**/
-
 /* I_STRING:
  *	This symbol, if defined, indicates to the C program that it should
  *	include <string.h> (USG systems) instead of <strings.h> (BSD systems).
diff --git a/ext/POSIX/POSIX.xs b/ext/POSIX/POSIX.xs
index 2d52326176..ab50226ff3 100644
--- a/ext/POSIX/POSIX.xs
+++ b/ext/POSIX/POSIX.xs
@@ -1336,9 +1336,7 @@ static NV_PAYLOAD_TYPE S_getpayload(NV nv)
 #if defined(I_TERMIOS)
 #include <termios.h>
 #endif
-#ifdef I_STDLIB
 #include <stdlib.h>
-#endif
 #ifndef __ultrix__
 #include <string.h>
 #endif
diff --git a/ext/POSIX/lib/POSIX.pm b/ext/POSIX/lib/POSIX.pm
index 2d7238a4ac..2fd13c2225 100644
--- a/ext/POSIX/lib/POSIX.pm
+++ b/ext/POSIX/lib/POSIX.pm
@@ -4,7 +4,7 @@ use warnings;
 
 our ($AUTOLOAD, %SIGRT);
 
-our $VERSION = '1.78';
+our $VERSION = '1.79';
 
 require XSLoader;
 
diff --git a/ext/SDBM_File/sdbm.h b/ext/SDBM_File/sdbm.h
index d5511daeef..cfb455261f 100644
--- a/ext/SDBM_File/sdbm.h
+++ b/ext/SDBM_File/sdbm.h
@@ -153,10 +153,8 @@ extern long sdbm_hash(const char *, int);
 # endif
 #endif
 
-/* Use all the "standard" definitions? */
-#if defined(STANDARD_C) && defined(I_STDLIB)
-#   include <stdlib.h>
-#endif /* STANDARD_C */
+/* Use all the "standard" definitions */
+#include <stdlib.h>
 
 #define MEM_SIZE Size_t
 
diff --git a/hints/irix_6.sh b/hints/irix_6.sh
index 832fde29bf..f16ae461d1 100644
--- a/hints/irix_6.sh
+++ b/hints/irix_6.sh
@@ -580,10 +580,7 @@ $define|true|[yY]*)
 
 #define sPRIfldbl $sPRIfldbl
 
-#define I_STDLIB $i_stdlib
-#ifdef I_STDLIB
 #include <stdlib.h>
-#endif
 
 int main()
 { 
@@ -622,10 +619,7 @@ EOP
 
 #define sPRIfldbl $sPRIfldbl
 
-#define I_STDLIB $i_stdlib
-#ifdef I_STDLIB
 #include <stdlib.h>
-#endif
 
 int main()
 { 
diff --git a/perl.h b/perl.h
index ce883d3530..042c6d9f73 100644
--- a/perl.h
+++ b/perl.h
@@ -771,10 +771,8 @@
 #   endif
 #endif
 
-/* Use all the "standard" definitions? */
-#if defined(STANDARD_C) && defined(I_STDLIB)
-#   include <stdlib.h>
-#endif
+/* Use all the "standard" definitions */
+#include <stdlib.h>
 
 /* If this causes problems, set i_unistd=undef in the hint file.  */
 #ifdef I_UNISTD
diff --git a/plan9/config.plan9 b/plan9/config.plan9
index 0fcfa82d9f..0daf313683 100644
--- a/plan9/config.plan9
+++ b/plan9/config.plan9
@@ -728,12 +728,6 @@
  */
 #define I_STDDEF	/**/
 
-/* I_STDLIB:
- *	This symbol, if defined, indicates that <stdlib.h> exists and should
- *	be included.
- */
-#define I_STDLIB		/**/
-
 /* I_STRING:
  *	This symbol, if defined, indicates to the C program that it should
  *	include <string.h> (USG systems) instead of <strings.h> (BSD systems).
diff --git a/plan9/config_h.sample b/plan9/config_h.sample
index bd8861027e..dcf3bdcc92 100644
--- a/plan9/config_h.sample
+++ b/plan9/config_h.sample
@@ -692,12 +692,6 @@
  */
 #define I_STDDEF	/**/
 
-/* I_STDLIB:
- *	This symbol, if defined, indicates that <stdlib.h> exists and should
- *	be included.
- */
-#define I_STDLIB		/**/
-
 /* I_STRING:
  *	This symbol, if defined, indicates to the C program that it should
  *	include <string.h> (USG systems) instead of <strings.h> (BSD systems).
diff --git a/uconfig.h b/uconfig.h
index 0755da1a5c..db249d113e 100644
--- a/uconfig.h
+++ b/uconfig.h
@@ -696,12 +696,6 @@
  */
 #define I_STDDEF	/**/
 
-/* I_STDLIB:
- *	This symbol, if defined, indicates that <stdlib.h> exists and should
- *	be included.
- */
-#define I_STDLIB		/**/
-
 /* I_STRING:
  *	This symbol, if defined, indicates to the C program that it should
  *	include <string.h> (USG systems) instead of <strings.h> (BSD systems).
@@ -5281,6 +5275,6 @@
 #endif
 
 /* Generated from:
- * 9ac22558a2db3bead054c2b016d0b70095e52fce40430a65015f21cd91dcc943 config_h.SH
+ * 71879525dcc4fa1f709eedff386a3384fad9b06f7f066a51ecc7f6bba9331b24 config_h.SH
  * 408e88881e8a567afeba7b56cb949d7886e8473896575932bfdef72ee9c32249 uconfig.sh
  * ex: set ro: */
diff --git a/win32/config_H.ce b/win32/config_H.ce
index 71007f3ed9..331bca2023 100644
--- a/win32/config_H.ce
+++ b/win32/config_H.ce
@@ -674,12 +674,6 @@
  */
 #define I_STDDEF	/**/
 
-/* I_STDLIB:
- *	This symbol, if defined, indicates that <stdlib.h> exists and should
- *	be included.
- */
-#define I_STDLIB		/**/
-
 /* I_STRING:
  *	This symbol, if defined, indicates to the C program that it should
  *	include <string.h> (USG systems) instead of <strings.h> (BSD systems).
diff --git a/win32/config_H.gc b/win32/config_H.gc
index 7451d62b32..3d19d6145a 100644
--- a/win32/config_H.gc
+++ b/win32/config_H.gc
@@ -684,12 +684,6 @@
  */
 #define I_STDDEF	/**/
 
-/* I_STDLIB:
- *	This symbol, if defined, indicates that <stdlib.h> exists and should
- *	be included.
- */
-#define I_STDLIB		/**/
-
 /* I_STRING:
  *	This symbol, if defined, indicates to the C program that it should
  *	include <string.h> (USG systems) instead of <strings.h> (BSD systems).
diff --git a/win32/config_H.vc b/win32/config_H.vc
index 6af02b3164..7ca7306a97 100644
--- a/win32/config_H.vc
+++ b/win32/config_H.vc
@@ -684,12 +684,6 @@
  */
 #define I_STDDEF	/**/
 
-/* I_STDLIB:
- *	This symbol, if defined, indicates that <stdlib.h> exists and should
- *	be included.
- */
-#define I_STDLIB		/**/
-
 /* I_STRING:
  *	This symbol, if defined, indicates to the C program that it should
  *	include <string.h> (USG systems) instead of <strings.h> (BSD systems).