[SCM] gawk branch, master, updated. gawk-4.1.0-4752-g950a15ac

[Arnold Robbins]

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- Log -----------------------------------------------------------------
http://git.sv.gnu.org/cgit/gawk.git/commit/?id=950a15ac48ead53f4485aea4f5566fcfe5db8a4a

commit 950a15ac48ead53f4485aea4f5566fcfe5db8a4a
Author: Arnold D. Robbins <arnold@skeeve.com>
Date:   Wed Jun 29 08:02:10 2022 +0300

    PMA only works on 64-bit systems. Enforce this and document it.

diff --git a/configh.in b/configh.in
index 283dcba2..2cfb984a 100644
--- a/configh.in
+++ b/configh.in
@@ -389,6 +389,9 @@
 /* The size of `unsigned long', as computed by sizeof. */
 #undef SIZEOF_UNSIGNED_LONG
 
+/* The size of `void *', as computed by sizeof. */
+#undef SIZEOF_VOID_P
+
 /* Define to 1 if all of the C90 standard headers exist (not just the ones
    required in a freestanding environment). This macro is provided for
    backward compatibility; new code need not use it. */
diff --git a/configure b/configure
index f9e8affe..11a42ed6 100755
--- a/configure
+++ b/configure
@@ -12536,8 +12536,41 @@ printf "%s\n" "#define HAVE_MBRTOWC 1" >>confdefs.h
 
 
 
+# The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of void *" >&5
+printf %s "checking size of void *... " >&6; }
+if test ${ac_cv_sizeof_void_p+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (void *))" 
"ac_cv_sizeof_void_p"        "$ac_includes_default"
+then :
+
+else $as_nop
+  if test "$ac_cv_type_void_p" = yes; then
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (void *)
+See \`config.log' for more details" "$LINENO" 5; }
+   else
+     ac_cv_sizeof_void_p=0
+   fi
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_void_p" >&5
+printf "%s\n" "$ac_cv_sizeof_void_p" >&6; }
+
+
+
+printf "%s\n" "#define SIZEOF_VOID_P $ac_cv_sizeof_void_p" >>confdefs.h
+
+
 use_persistent_malloc=no
-if test "$SKIP_PERSIST_MALLOC" = no
+if test "$SKIP_PERSIST_MALLOC" = no && test $ac_cv_sizeof_void_p -eq 8
 then
        ac_fn_c_check_func "$LINENO" "mmap" "ac_cv_func_mmap"
 if test "x$ac_cv_func_mmap" = xyes
diff --git a/doc/ChangeLog b/doc/ChangeLog
index 926763b1..61eef4f3 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,3 +1,8 @@
+2022-06-29         Arnold D. Robbins     <arnold@skeeve.com>
+
+       * gawktexi.in (Persistent Memory): Note that only 64-bit
+       systems are supported.
+
 2022-06-24         Arnold D. Robbins     <arnold@skeeve.com>
 
        * awkcard.in (Environment Variables): Shorten text and add
diff --git a/doc/gawk.info b/doc/gawk.info
index aa5c0189..31f85ac8 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -22132,12 +22132,12 @@ arrays in a persistent heap, which resides in a file 
in the filesystem.
 When persistent memory is not in use (the normal case), 'gawk''s data
 resides in ephemeral system memory.
 
-   Persistent memory is enabled on systems supporting the 'mmap()' and
-'munmap()' system calls.  'gawk' must be compiled as a non-PIE (Position
-Independent Executable) binary, since the persistent store ends up
-holding pointers to functions held within the 'gawk' executable.  This
-also means that to use the persistent memory, you must use the same
-'gawk' executable from run to run.
+   Persistent memory is enabled on 64-bit systems supporting the
+'mmap()' and 'munmap()' system calls.  'gawk' must be compiled as a
+non-PIE (Position Independent Executable) binary, since the persistent
+store ends up holding pointers to functions held within the 'gawk'
+executable.  This also means that to use the persistent memory, you must
+use the same 'gawk' executable from run to run.
 
    As of this writing, persistent memory has only been tested on
 GNU/Linux and Mac OS systems.  On others, your mileage may vary, and/or
@@ -39367,244 +39367,244 @@ Ref: Two-way I/O-Footnote-2884071
 Node: TCP/IP Networking884153
 Node: Profiling887229
 Node: Persistent Memory896535
-Ref: Persistent Memory-Footnote-1902697
-Node: Extension Philosophy902824
-Node: Advanced Features Summary904311
-Node: Internationalization906483
-Node: I18N and L10N908157
-Node: Explaining gettext908844
-Ref: Explaining gettext-Footnote-1914736
-Ref: Explaining gettext-Footnote-2914921
-Node: Programmer i18n915086
-Ref: Programmer i18n-Footnote-1920035
-Node: Translator i18n920084
-Node: String Extraction920878
-Ref: String Extraction-Footnote-1922010
-Node: Printf Ordering922096
-Ref: Printf Ordering-Footnote-1924882
-Node: I18N Portability924946
-Ref: I18N Portability-Footnote-1927402
-Node: I18N Example927465
-Ref: I18N Example-Footnote-1930740
-Ref: I18N Example-Footnote-2930813
-Node: Gawk I18N930922
-Node: I18N Summary931544
-Node: Debugger932885
-Node: Debugging933885
-Node: Debugging Concepts934326
-Node: Debugging Terms936135
-Node: Awk Debugging938710
-Ref: Awk Debugging-Footnote-1939655
-Node: Sample Debugging Session939787
-Node: Debugger Invocation940321
-Node: Finding The Bug941707
-Node: List of Debugger Commands948181
-Node: Breakpoint Control949514
-Node: Debugger Execution Control953208
-Node: Viewing And Changing Data956570
-Node: Execution Stack960111
-Node: Debugger Info961748
-Node: Miscellaneous Debugger Commands965819
-Node: Readline Support970881
-Node: Limitations971777
-Node: Debugging Summary974331
-Node: Namespaces975610
-Node: Global Namespace976721
-Node: Qualified Names978119
-Node: Default Namespace979118
-Node: Changing The Namespace979859
-Node: Naming Rules981473
-Node: Internal Name Management983321
-Node: Namespace Example984363
-Node: Namespace And Features986925
-Node: Namespace Summary988360
-Node: Arbitrary Precision Arithmetic989837
-Node: Computer Arithmetic991324
-Ref: table-numeric-ranges995090
-Ref: table-floating-point-ranges995584
-Ref: Computer Arithmetic-Footnote-1996243
-Node: Math Definitions996300
-Ref: table-ieee-formats999276
-Node: MPFR features999844
-Node: MPFR On Parole1000289
-Ref: MPFR On Parole-Footnote-11001118
-Node: MPFR Intro1001273
-Node: FP Math Caution1002912
-Ref: FP Math Caution-Footnote-11003984
-Node: Inexactness of computations1004353
-Node: Inexact representation1005384
-Node: Comparing FP Values1006744
-Node: Errors accumulate1007985
-Node: Strange values1009441
-Ref: Strange values-Footnote-11012029
-Node: Getting Accuracy1012134
-Node: Try To Round1014844
-Node: Setting precision1015743
-Ref: table-predefined-precision-strings1016440
-Node: Setting the rounding mode1018271
-Ref: table-gawk-rounding-modes1018645
-Ref: Setting the rounding mode-Footnote-11022577
-Node: Arbitrary Precision Integers1022756
-Ref: Arbitrary Precision Integers-Footnote-11025931
-Node: Checking for MPFR1026080
-Node: POSIX Floating Point Problems1027554
-Ref: POSIX Floating Point Problems-Footnote-11032207
-Node: Floating point summary1032245
-Node: Dynamic Extensions1034435
-Node: Extension Intro1035988
-Node: Plugin License1037254
-Node: Extension Mechanism Outline1038051
-Ref: figure-load-extension1038490
-Ref: figure-register-new-function1040056
-Ref: figure-call-new-function1041149
-Node: Extension API Description1043212
-Node: Extension API Functions Introduction1044925
-Ref: table-api-std-headers1046761
-Node: General Data Types1051011
-Ref: General Data Types-Footnote-11059717
-Node: Memory Allocation Functions1060016
-Ref: Memory Allocation Functions-Footnote-11064517
-Node: Constructor Functions1064616
-Node: API Ownership of MPFR and GMP Values1068269
-Node: Registration Functions1069802
-Node: Extension Functions1070502
-Node: Exit Callback Functions1075824
-Node: Extension Version String1077074
-Node: Input Parsers1077737
-Node: Output Wrappers1090458
-Node: Two-way processors1094970
-Node: Printing Messages1097235
-Ref: Printing Messages-Footnote-11098406
-Node: Updating ERRNO1098559
-Node: Requesting Values1099298
-Ref: table-value-types-returned1100035
-Node: Accessing Parameters1101144
-Node: Symbol Table Access1102381
-Node: Symbol table by name1102893
-Ref: Symbol table by name-Footnote-11105918
-Node: Symbol table by cookie1106046
-Ref: Symbol table by cookie-Footnote-11110231
-Node: Cached values1110295
-Ref: Cached values-Footnote-11113831
-Node: Array Manipulation1113984
-Ref: Array Manipulation-Footnote-11115075
-Node: Array Data Types1115112
-Ref: Array Data Types-Footnote-11117770
-Node: Array Functions1117862
-Node: Flattening Arrays1122647
-Node: Creating Arrays1129623
-Node: Redirection API1134390
-Node: Extension API Variables1137223
-Node: Extension Versioning1137934
-Ref: gawk-api-version1138363
-Node: Extension GMP/MPFR Versioning1140095
-Node: Extension API Informational Variables1141723
-Node: Extension API Boilerplate1142796
-Node: Changes from API V11146770
-Node: Finding Extensions1148342
-Node: Extension Example1148901
-Node: Internal File Description1149699
-Node: Internal File Ops1153779
-Ref: Internal File Ops-Footnote-11165129
-Node: Using Internal File Ops1165269
-Ref: Using Internal File Ops-Footnote-11167652
-Node: Extension Samples1167926
-Node: Extension Sample File Functions1169455
-Node: Extension Sample Fnmatch1177104
-Node: Extension Sample Fork1178591
-Node: Extension Sample Inplace1179809
-Node: Extension Sample Ord1183435
-Node: Extension Sample Readdir1184271
-Ref: table-readdir-file-types1185160
-Node: Extension Sample Revout1186228
-Node: Extension Sample Rev2way1186817
-Node: Extension Sample Read write array1187557
-Node: Extension Sample Readfile1190722
-Node: Extension Sample Time1191817
-Node: Extension Sample API Tests1193569
-Node: gawkextlib1194061
-Node: Extension summary1196979
-Node: Extension Exercises1200681
-Node: Language History1201923
-Node: V7/SVR3.11203579
-Node: SVR41205731
-Node: POSIX1207165
-Node: BTL1208546
-Node: POSIX/GNU1209275
-Node: Feature History1215053
-Node: Common Extensions1232228
-Node: Ranges and Locales1233511
-Ref: Ranges and Locales-Footnote-11238127
-Ref: Ranges and Locales-Footnote-21238154
-Ref: Ranges and Locales-Footnote-31238389
-Node: Contributors1238612
-Node: History summary1244609
-Node: Installation1245989
-Node: Gawk Distribution1246933
-Node: Getting1247417
-Node: Extracting1248380
-Node: Distribution contents1250018
-Node: Unix Installation1257079
-Node: Quick Installation1257883
-Node: Compiling with MPFR1260303
-Node: Shell Startup Files1260993
-Node: Additional Configuration Options1262082
-Node: Configuration Philosophy1264397
-Node: Compiling from Git1266793
-Node: Building the Documentation1267348
-Node: Non-Unix Installation1268732
-Node: PC Installation1269192
-Node: PC Binary Installation1270030
-Node: PC Compiling1270903
-Node: PC Using1272020
-Node: Cygwin1275573
-Node: MSYS1276797
-Node: VMS Installation1277399
-Node: VMS Compilation1278118
-Ref: VMS Compilation-Footnote-11279347
-Node: VMS Dynamic Extensions1279405
-Node: VMS Installation Details1281090
-Node: VMS Running1283352
-Node: VMS GNV1287631
-Node: Bugs1288345
-Node: Bug definition1289257
-Node: Bug address1292193
-Node: Usenet1295381
-Node: Performance bugs1296570
-Node: Asking for help1299491
-Node: Maintainers1301458
-Node: Other Versions1302652
-Node: Installation summary1310922
-Node: Notes1312286
-Node: Compatibility Mode1313080
-Node: Additions1313862
-Node: Accessing The Source1314787
-Node: Adding Code1316224
-Node: New Ports1323039
-Node: Derived Files1327414
-Ref: Derived Files-Footnote-11333074
-Ref: Derived Files-Footnote-21333109
-Ref: Derived Files-Footnote-31333707
-Node: Future Extensions1333821
-Node: Implementation Limitations1334479
-Node: Extension Design1335689
-Node: Old Extension Problems1336833
-Ref: Old Extension Problems-Footnote-11338351
-Node: Extension New Mechanism Goals1338408
-Ref: Extension New Mechanism Goals-Footnote-11341772
-Node: Extension Other Design Decisions1341961
-Node: Extension Future Growth1344074
-Node: Notes summary1344680
-Node: Basic Concepts1345838
-Node: Basic High Level1346519
-Ref: figure-general-flow1346801
-Ref: figure-process-flow1347487
-Ref: Basic High Level-Footnote-11350789
-Node: Basic Data Typing1350974
-Node: Glossary1354302
-Node: Copying1386189
-Node: GNU Free Documentation License1423732
-Node: Index1448852
+Ref: Persistent Memory-Footnote-1902704
+Node: Extension Philosophy902831
+Node: Advanced Features Summary904318
+Node: Internationalization906490
+Node: I18N and L10N908164
+Node: Explaining gettext908851
+Ref: Explaining gettext-Footnote-1914743
+Ref: Explaining gettext-Footnote-2914928
+Node: Programmer i18n915093
+Ref: Programmer i18n-Footnote-1920042
+Node: Translator i18n920091
+Node: String Extraction920885
+Ref: String Extraction-Footnote-1922017
+Node: Printf Ordering922103
+Ref: Printf Ordering-Footnote-1924889
+Node: I18N Portability924953
+Ref: I18N Portability-Footnote-1927409
+Node: I18N Example927472
+Ref: I18N Example-Footnote-1930747
+Ref: I18N Example-Footnote-2930820
+Node: Gawk I18N930929
+Node: I18N Summary931551
+Node: Debugger932892
+Node: Debugging933892
+Node: Debugging Concepts934333
+Node: Debugging Terms936142
+Node: Awk Debugging938717
+Ref: Awk Debugging-Footnote-1939662
+Node: Sample Debugging Session939794
+Node: Debugger Invocation940328
+Node: Finding The Bug941714
+Node: List of Debugger Commands948188
+Node: Breakpoint Control949521
+Node: Debugger Execution Control953215
+Node: Viewing And Changing Data956577
+Node: Execution Stack960118
+Node: Debugger Info961755
+Node: Miscellaneous Debugger Commands965826
+Node: Readline Support970888
+Node: Limitations971784
+Node: Debugging Summary974338
+Node: Namespaces975617
+Node: Global Namespace976728
+Node: Qualified Names978126
+Node: Default Namespace979125
+Node: Changing The Namespace979866
+Node: Naming Rules981480
+Node: Internal Name Management983328
+Node: Namespace Example984370
+Node: Namespace And Features986932
+Node: Namespace Summary988367
+Node: Arbitrary Precision Arithmetic989844
+Node: Computer Arithmetic991331
+Ref: table-numeric-ranges995097
+Ref: table-floating-point-ranges995591
+Ref: Computer Arithmetic-Footnote-1996250
+Node: Math Definitions996307
+Ref: table-ieee-formats999283
+Node: MPFR features999851
+Node: MPFR On Parole1000296
+Ref: MPFR On Parole-Footnote-11001125
+Node: MPFR Intro1001280
+Node: FP Math Caution1002919
+Ref: FP Math Caution-Footnote-11003991
+Node: Inexactness of computations1004360
+Node: Inexact representation1005391
+Node: Comparing FP Values1006751
+Node: Errors accumulate1007992
+Node: Strange values1009448
+Ref: Strange values-Footnote-11012036
+Node: Getting Accuracy1012141
+Node: Try To Round1014851
+Node: Setting precision1015750
+Ref: table-predefined-precision-strings1016447
+Node: Setting the rounding mode1018278
+Ref: table-gawk-rounding-modes1018652
+Ref: Setting the rounding mode-Footnote-11022584
+Node: Arbitrary Precision Integers1022763
+Ref: Arbitrary Precision Integers-Footnote-11025938
+Node: Checking for MPFR1026087
+Node: POSIX Floating Point Problems1027561
+Ref: POSIX Floating Point Problems-Footnote-11032214
+Node: Floating point summary1032252
+Node: Dynamic Extensions1034442
+Node: Extension Intro1035995
+Node: Plugin License1037261
+Node: Extension Mechanism Outline1038058
+Ref: figure-load-extension1038497
+Ref: figure-register-new-function1040063
+Ref: figure-call-new-function1041156
+Node: Extension API Description1043219
+Node: Extension API Functions Introduction1044932
+Ref: table-api-std-headers1046768
+Node: General Data Types1051018
+Ref: General Data Types-Footnote-11059724
+Node: Memory Allocation Functions1060023
+Ref: Memory Allocation Functions-Footnote-11064524
+Node: Constructor Functions1064623
+Node: API Ownership of MPFR and GMP Values1068276
+Node: Registration Functions1069809
+Node: Extension Functions1070509
+Node: Exit Callback Functions1075831
+Node: Extension Version String1077081
+Node: Input Parsers1077744
+Node: Output Wrappers1090465
+Node: Two-way processors1094977
+Node: Printing Messages1097242
+Ref: Printing Messages-Footnote-11098413
+Node: Updating ERRNO1098566
+Node: Requesting Values1099305
+Ref: table-value-types-returned1100042
+Node: Accessing Parameters1101151
+Node: Symbol Table Access1102388
+Node: Symbol table by name1102900
+Ref: Symbol table by name-Footnote-11105925
+Node: Symbol table by cookie1106053
+Ref: Symbol table by cookie-Footnote-11110238
+Node: Cached values1110302
+Ref: Cached values-Footnote-11113838
+Node: Array Manipulation1113991
+Ref: Array Manipulation-Footnote-11115082
+Node: Array Data Types1115119
+Ref: Array Data Types-Footnote-11117777
+Node: Array Functions1117869
+Node: Flattening Arrays1122654
+Node: Creating Arrays1129630
+Node: Redirection API1134397
+Node: Extension API Variables1137230
+Node: Extension Versioning1137941
+Ref: gawk-api-version1138370
+Node: Extension GMP/MPFR Versioning1140102
+Node: Extension API Informational Variables1141730
+Node: Extension API Boilerplate1142803
+Node: Changes from API V11146777
+Node: Finding Extensions1148349
+Node: Extension Example1148908
+Node: Internal File Description1149706
+Node: Internal File Ops1153786
+Ref: Internal File Ops-Footnote-11165136
+Node: Using Internal File Ops1165276
+Ref: Using Internal File Ops-Footnote-11167659
+Node: Extension Samples1167933
+Node: Extension Sample File Functions1169462
+Node: Extension Sample Fnmatch1177111
+Node: Extension Sample Fork1178598
+Node: Extension Sample Inplace1179816
+Node: Extension Sample Ord1183442
+Node: Extension Sample Readdir1184278
+Ref: table-readdir-file-types1185167
+Node: Extension Sample Revout1186235
+Node: Extension Sample Rev2way1186824
+Node: Extension Sample Read write array1187564
+Node: Extension Sample Readfile1190729
+Node: Extension Sample Time1191824
+Node: Extension Sample API Tests1193576
+Node: gawkextlib1194068
+Node: Extension summary1196986
+Node: Extension Exercises1200688
+Node: Language History1201930
+Node: V7/SVR3.11203586
+Node: SVR41205738
+Node: POSIX1207172
+Node: BTL1208553
+Node: POSIX/GNU1209282
+Node: Feature History1215060
+Node: Common Extensions1232235
+Node: Ranges and Locales1233518
+Ref: Ranges and Locales-Footnote-11238134
+Ref: Ranges and Locales-Footnote-21238161
+Ref: Ranges and Locales-Footnote-31238396
+Node: Contributors1238619
+Node: History summary1244616
+Node: Installation1245996
+Node: Gawk Distribution1246940
+Node: Getting1247424
+Node: Extracting1248387
+Node: Distribution contents1250025
+Node: Unix Installation1257086
+Node: Quick Installation1257890
+Node: Compiling with MPFR1260310
+Node: Shell Startup Files1261000
+Node: Additional Configuration Options1262089
+Node: Configuration Philosophy1264404
+Node: Compiling from Git1266800
+Node: Building the Documentation1267355
+Node: Non-Unix Installation1268739
+Node: PC Installation1269199
+Node: PC Binary Installation1270037
+Node: PC Compiling1270910
+Node: PC Using1272027
+Node: Cygwin1275580
+Node: MSYS1276804
+Node: VMS Installation1277406
+Node: VMS Compilation1278125
+Ref: VMS Compilation-Footnote-11279354
+Node: VMS Dynamic Extensions1279412
+Node: VMS Installation Details1281097
+Node: VMS Running1283359
+Node: VMS GNV1287638
+Node: Bugs1288352
+Node: Bug definition1289264
+Node: Bug address1292200
+Node: Usenet1295388
+Node: Performance bugs1296577
+Node: Asking for help1299498
+Node: Maintainers1301465
+Node: Other Versions1302659
+Node: Installation summary1310929
+Node: Notes1312293
+Node: Compatibility Mode1313087
+Node: Additions1313869
+Node: Accessing The Source1314794
+Node: Adding Code1316231
+Node: New Ports1323046
+Node: Derived Files1327421
+Ref: Derived Files-Footnote-11333081
+Ref: Derived Files-Footnote-21333116
+Ref: Derived Files-Footnote-31333714
+Node: Future Extensions1333828
+Node: Implementation Limitations1334486
+Node: Extension Design1335696
+Node: Old Extension Problems1336840
+Ref: Old Extension Problems-Footnote-11338358
+Node: Extension New Mechanism Goals1338415
+Ref: Extension New Mechanism Goals-Footnote-11341779
+Node: Extension Other Design Decisions1341968
+Node: Extension Future Growth1344081
+Node: Notes summary1344687
+Node: Basic Concepts1345845
+Node: Basic High Level1346526
+Ref: figure-general-flow1346808
+Ref: figure-process-flow1347494
+Ref: Basic High Level-Footnote-11350796
+Node: Basic Data Typing1350981
+Node: Glossary1354309
+Node: Copying1386196
+Node: GNU Free Documentation License1423739
+Node: Index1448859
 
 End Tag Table
 
diff --git a/doc/gawk.texi b/doc/gawk.texi
index cc4bab53..acbda21e 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -30978,7 +30978,7 @@ which resides in a file in
 the filesystem.  When persistent memory is not in use (the normal case),
 @command{gawk}'s data resides in ephemeral system memory.
 
-Persistent memory is enabled on systems supporting the @code{mmap()}
+Persistent memory is enabled on 64-bit systems supporting the @code{mmap()}
 and @code{munmap()} system calls.  @command{gawk} must be compiled as a
 non-PIE (Position Independent Executable) binary, since the persistent
 store ends up holding pointers to functions held within the @command{gawk}
diff --git a/doc/gawktexi.in b/doc/gawktexi.in
index 1728eb44..9e39f158 100644
--- a/doc/gawktexi.in
+++ b/doc/gawktexi.in
@@ -29860,7 +29860,7 @@ which resides in a file in
 the filesystem.  When persistent memory is not in use (the normal case),
 @command{gawk}'s data resides in ephemeral system memory.
 
-Persistent memory is enabled on systems supporting the @code{mmap()}
+Persistent memory is enabled on 64-bit systems supporting the @code{mmap()}
 and @code{munmap()} system calls.  @command{gawk} must be compiled as a
 non-PIE (Position Independent Executable) binary, since the persistent
 store ends up holding pointers to functions held within the @command{gawk}
diff --git a/m4/ChangeLog b/m4/ChangeLog
index aaac3b88..138cbaff 100644
--- a/m4/ChangeLog
+++ b/m4/ChangeLog
@@ -1,3 +1,8 @@
+2022-06-29         Arnold D. Robbins     <arnold@skeeve.com>
+
+       * pma.m4: Check sizeof(void *) is 8. PMA only works on
+       64-bit systems.
+
 2022-06-15         Arnold D. Robbins     <arnold@skeeve.com>
 
        * pma.m4: Add case for Cygwin.
diff --git a/m4/pma.m4 b/m4/pma.m4
index f6f6e969..53dc3584 100644
--- a/m4/pma.m4
+++ b/m4/pma.m4
@@ -7,8 +7,9 @@ dnl Decide whether or not to use the persistent memory allocator
 
 AC_DEFUN([GAWK_USE_PERSISTENT_MALLOC],
 [
+AC_CHECK_SIZEOF([void *])
 use_persistent_malloc=no
-if test "$SKIP_PERSIST_MALLOC" = no
+if test "$SKIP_PERSIST_MALLOC" = no && test $ac_cv_sizeof_void_p -eq 8
 then
        AC_CHECK_FUNC([mmap])
        AC_CHECK_FUNC([munmap])

-----------------------------------------------------------------------

Summary of changes:
 configh.in      |   3 +
 configure       |  35 +++-
 doc/ChangeLog   |   5 +
 doc/gawk.info   | 488 ++++++++++++++++++++++++++++----------------------------
 doc/gawk.texi   |   2 +-
 doc/gawktexi.in |   2 +-
 m4/ChangeLog    |   5 +
 m4/pma.m4       |   3 +-
 8 files changed, 295 insertions(+), 248 deletions(-)


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