Test case for #10433/#10424.
[p5sagit/p5-mst-13.2.git] / perly.fixer
CommitLineData
fe14fcc3 1#!/bin/sh
2
a0d0e21e 3# Fix up yacc output to allow dynamic allocation. Since perly.c
4# is now provided with the perl source, this should not be necessary.
5#
6# However, if the user wishes to use byacc, or wishes to try another
7# compiler compiler (e.g. bison or yacc), this script will get run.
25c49cb6 8# See makefile run_byacc target for more details.
a0d0e21e 9#
25c49cb6 10# Currently, only byacc version 1.8 is fully supported.
a0d0e21e 11#
35c8bce7 12# Hacks to make it work with Interactive's SysVr3 Version 2.2
13# doughera@lafvax.lafayette.edu (Andy Dougherty) 3/23/91
9ef589d8 14#
15# Additional information to make the BSD section work with SunOS 4.0.2
16# tdinger@East.Sun.COM (Tom Dinger) 4/15/1991
35c8bce7 17
fe14fcc3 18input=$1
19output=$2
20tmp=/tmp/f$$
21
dae2d13f 22inputh=`echo $input|sed 's:\.c$:.h:'`
23if grep '^#ifdef PERL_CORE' $inputh; then
24 : never mind
25else
26 echo "#ifdef PERL_CORE" > $tmp
27 sed -e 's:^typedef union {:#endif /* PERL_CORE */\
28\
29typedef union {:' $inputh >> $tmp
30 mv -f $tmp $inputh
31fi
32
a0d0e21e 33if grep 'yaccpar 1.8 (Berkeley)' $input >/dev/null 2>&1; then
93a17b20 34 cp $input $output
09bef843 35 # Don't expect the diff to do everything -- do some by hand
e262e9be 36 if test -f perly_c.diff; then
37 patch -F3 $output <perly_c.diff
09bef843 38 sed -e '/^[ ]*printf("yydebug:/s/printf(/PerlIO_printf(Perl_debug_log, /' \
39 -e '/^#line /s/"y[.]tab[.]c"/"perly.c"/' \
40 -e '/\[\] *= *[{]/s/^/static /' \
41 -e '/^static static/s/^static //' \
42 -e '/^#define.WORD/,/^#define.ARROW/d' \
43 -e '/^int.yydebug/,/^#define.yystacksize/d' \
44 < $output > $tmp && mv -f $tmp $output || exit 1
a0d0e21e 45 rm -rf $input
09bef843 46 echo "If you need to debug perly.c, you need to fix up the #line"
47 echo "directives yourself."
a0d0e21e 48 fi
93a17b20 49 exit
a0d0e21e 50elif grep 'yaccpar 1.9 (Berkeley)' $input >/dev/null 2>&1; then
51 if test -f perly.c.dif9; then
52 patch -F3 $output <perly.c.dif9
09bef843 53 sed -e '/^[ ]*printf("yydebug:/s/printf(/PerlIO_printf(Perl_debug_log, /' \
54 -e '/^#line /s/"y[.]tab[.]c"/"perly.c"/' \
55 -e '/\[\] *= *[{]/s/^/static /' \
56 -e '/^static static/s/^static //' \
57 -e '/^#define.WORD/,/^#define.ARROW/d' \
58 -e '/^int.yydebug/,/^#define.yystacksize/d' \
59 < $output > $tmp && mv -f $tmp $output || exit 1
a0d0e21e 60 rm -rf $input
09bef843 61 echo "If you need to debug perly.c, you need to fix up the #line"
62 echo "directives yourself."
a0d0e21e 63 exit 0
64 else
65 echo "Diffs from byacc-1.9 are not available."
66 echo "If you wish to proceed anyway, do"
67 echo "cp $input $output"
68 echo "cp y.tab.h perly.h"
69 echo "and re-run make. Otherwise, I will use the old perly.c"
70 touch perly.c
71 # Exit with error status to stop make.
72 exit 1
73 fi
93a17b20 74fi
75
35c8bce7 76plan="unknown"
77
25c49cb6 78echo ""
79echo "Warning: the yacc you have used is not directly supported by perl."
80echo "The perly.fixer script will attempt to make some changes to the generated"
81echo "file. The changes may be incomplete and that might lead to problems later"
82echo "(especially with complex scripts). You may need to apply the changes"
e262e9be 83echo "embedded in perl.fixer (and/or perly_c.dif*) by hand."
25c49cb6 84echo ""
85
86# Below, we check for various characteristic yaccpar outputs.
a0d0e21e 87
35c8bce7 88# Test for BSD 4.3 version.
9ef589d8 89# Also tests for the SunOS 4.0.2 version
fe14fcc3 90egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];
35c8bce7 91short[ ]*yys\[ *YYMAXDEPTH *\] *;
fe14fcc3 92yyps *= *&yys\[ *-1 *\];
93yypv *= *&yyv\[ *-1 *\];
a0d0e21e 94if *\( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null
35c8bce7 95
fe14fcc3 96set `wc -l $tmp`
35c8bce7 97if test "$1" = "5"; then
98 plan="bsd43"
99fi
fe14fcc3 100
35c8bce7 101if test "$plan" = "unknown"; then
a0d0e21e 102 # Test for ISC 2.2 version (probably generic SysVr3).
35c8bce7 103egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];
104int[ ]*yys\[ *YYMAXDEPTH *\] *;
105yyps *= *&yys\[ *-1 *\];
106yypv *= *&yyv\[ *-1 *\];
a0d0e21e 107if *\( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null
35c8bce7 108
109 set `wc -l $tmp`
110 if test "$1" = "5"; then
111 plan="isc"
112 fi
113fi
fe14fcc3 114
25c49cb6 115# ------
116
35c8bce7 117case "$plan" in
9ef589d8 118 ##################################################################
119 # The SunOS 4.0.2 version has the comparison fixed already.
120 # Also added are out of memory checks (makes porting the generated
121 # code easier) For most systems, it can't hurt. -- TD
35c8bce7 122 "bsd43")
09bef843 123 echo "Attempting to patch perly.c to allow dynamic yacc stack allocation"
35c8bce7 124 echo "Assuming bsd4.3 yaccpar"
125 cat >$tmp <<'END'
fe14fcc3 126/YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\
127int yymaxdepth = YYMAXDEPTH;\
128YYSTYPE *yyv; /* where the values are stored */\
129short *yys;\
130short *maxyyps;
131
132/short[ ]*yys\[ *YYMAXDEPTH *\] *;/d
133
134/yyps *= *&yys\[ *-1 *\];/d
135
136/yypv *= *&yyv\[ *-1 *\];/c\
137\ if (!yyv) {\
8c52afec 138\ New(73, yyv, yymaxdepth, YYSTYPE);\
139\ New(73, yys, yymaxdepth, short);\
9ef589d8 140\ if ( !yyv || !yys ) {\
141\ yyerror( "out of memory" );\
142\ return(1);\
143\ }\
fe14fcc3 144\ maxyyps = &yys[yymaxdepth];\
145\ }\
146\ yyps = &yys[-1];\
147\ yypv = &yyv[-1];
148
149
9ef589d8 150/if *( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *)/c\
fe14fcc3 151\ if( ++yyps >= maxyyps ) {\
152\ int tv = yypv - yyv;\
153\ int ts = yyps - yys;\
154\
155\ yymaxdepth *= 2;\
8c52afec 156\ Renew(yyv, yymaxdepth, YYSTYPE);\
157\ Renew(yys, yymaxdepth, short);\
9ef589d8 158\ if ( !yyv || !yys ) {\
159\ yyerror( "yacc stack overflow" );\
160\ return(1);\
161\ }\
fe14fcc3 162\ yyps = yys + ts;\
163\ yypv = yyv + tv;\
164\ maxyyps = &yys[yymaxdepth];\
165\ }
166
167/yacc stack overflow.*}/d
168/yacc stack overflow/,/}/d
169END
25c49cb6 170 if sed -f $tmp <$input >$output
171 then echo "The edit seems to have been applied okay."
172 else echo "The edit seems to have failed!"
173 fi
174 ;;
35c8bce7 175
176 #######################################################
177 "isc") # Interactive Systems 2.2 version
09bef843 178 echo "Attempting to patch perly.c to allow dynamic yacc stack allocation"
35c8bce7 179 echo "Assuming Interactive SysVr3 2.2 yaccpar"
180 # Easier to simply put whole script here than to modify the
181 # bsd script with sed.
182 # Main changes: yaccpar sometimes uses yy_ps and yy_pv
183 # which are local register variables.
184 # if(++yyps > YYMAXDEPTH) had opening brace on next line.
185 # I've kept that brace in along with a call to yyerror if
186 # realloc fails. (Actually, I just don't know how to do
187 # multi-line matches in sed.)
188 cat > $tmp << 'END'
189/YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\
190int yymaxdepth = YYMAXDEPTH;\
191YYSTYPE *yyv; /* where the values are stored */\
192int *yys;\
193int *maxyyps;
194
195/int[ ]*yys\[ *YYMAXDEPTH *\] *;/d
196
197/yyps *= *&yys\[ *-1 *\];/d
198
199/yypv *= *&yyv\[ *-1 *\];/c\
200\ if (!yyv) {\
8c52afec 201\ New(73, yyv, yymaxdepth, YYSTYPE);\
202\ New(73, yys, yymaxdepth, int);\
35c8bce7 203\ maxyyps = &yys[yymaxdepth];\
204\ }\
205\ yyps = &yys[-1];\
206\ yypv = &yyv[-1];
207
208/if *( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *)/c\
209\ if( ++yy_ps >= maxyyps ) {\
210\ int tv = yy_pv - yyv;\
211\ int ts = yy_ps - yys;\
212\
213\ yymaxdepth *= 2;\
8c52afec 214\ Renew(yyv, yymaxdepth, YYSTYPE);\
215\ Renew(yys, yymaxdepth, int);\
35c8bce7 216\ yy_ps = yyps = yys + ts;\
217\ yy_pv = yypv = yyv + tv;\
218\ maxyyps = &yys[yymaxdepth];\
219\ }\
220\ if (yyv == NULL || yys == NULL)
221END
25c49cb6 222 if sed -f $tmp < $input > $output
223 then echo "The edit seems to have been applied okay."
224 else echo "The edit seems to have failed!"
225 fi
226 ;;
35c8bce7 227
228 ######################################################
229 # Plan still unknown
25c49cb6 230 *)
231 echo "Unable to patch perly.c to allow dynamic yacc stack allocation (plan=$plan)"
232 # just do minimal change to write $output from $input
233 sed -e 's/Received token/ *** Received token/' $input >$output
234 ;;
35c8bce7 235esac
fe14fcc3 236
25c49cb6 237echo ""
fe14fcc3 238rm -rf $tmp $input