Ian Jackson
2011-Jan-12 14:22 UTC
[Xen-devel] [PATCH] libxl: config parser: Rebuild config file parser scanner
# HG changeset patch
# User Ian Jackson <Ian.Jackson@eu.citrix.com>
# Date 1294841653 0
# Node ID 20b0f709153e9e36c937caae8ec0b816c8ad1cfd
# Parent c3e478eafabce2840a170da0fbc92458afb95386
libxl: config parser: Rebuild config file parser scanner (rerun flex)
The scanner from c/s 22735:cb94dbe20f97 is buggy and crashes with a
segmentation fault. Rebuilding the sanner appears to fix the problem
so it appears that I somehow accidentally checked in a scanner which
doesn''t correspond to the committed scanner source code.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
diff -r c3e478eafabc -r 20b0f709153e tools/libxl/libxlu_cfg_l.c
--- a/tools/libxl/libxlu_cfg_l.c Wed Jan 12 10:53:56 2011 +0000
+++ b/tools/libxl/libxlu_cfg_l.c Wed Jan 12 14:14:13 2011 +0000
@@ -379,12 +379,12 @@ struct yy_trans_info
flex_int32_t yy_verify;
flex_int32_t yy_nxt;
};
-static yyconst flex_int16_t yy_accept[34] +static yyconst flex_int16_t
yy_accept[35] { 0,
- 0, 0, 13, 13, 16, 12, 3, 9, 12, 12,
- 12, 4, 2, 8, 7, 5, 6, 1, 13, 13,
- 14, 0, 11, 0, 0, 9, 0, 10, 0, 2,
- 1, 13, 0
+ 0, 0, 14, 14, 17, 13, 3, 9, 13, 13,
+ 13, 12, 4, 2, 8, 7, 5, 6, 1, 14,
+ 14, 15, 0, 11, 0, 0, 9, 0, 10, 0,
+ 2, 1, 14, 0
} ;
static yyconst flex_int32_t yy_ec[256] @@ -809,13 +809,13 @@ yy_match:
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = (int) yy_def[yy_current_state];
- if ( yy_current_state >= 34 )
+ if ( yy_current_state >= 35 )
yy_c = yy_meta[(unsigned int) yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
++yy_cp;
}
- while ( yy_current_state != 33 );
+ while ( yy_current_state != 34 );
yy_cp = yyg->yy_last_accepting_cpos;
yy_current_state = yyg->yy_last_accepting_state;
@@ -919,34 +919,43 @@ YY_RULE_SETUP
YY_RULE_SETUP
#line 67 "libxlu_cfg_l.l"
{
+ ctx->likely_python= 1;
BEGIN(lexerr);
yymore();
}
YY_BREAK
case 13:
YY_RULE_SETUP
-#line 72 "libxlu_cfg_l.l"
+#line 73 "libxlu_cfg_l.l"
+{
+ BEGIN(lexerr);
+ yymore();
+ }
+ YY_BREAK
+case 14:
+YY_RULE_SETUP
+#line 78 "libxlu_cfg_l.l"
{
xlu__cfgl_lexicalerror(ctx,"lexical
error");
BEGIN(0);
}
YY_BREAK
-case 14:
-/* rule 14 can match eol */
+case 15:
+/* rule 15 can match eol */
YY_RULE_SETUP
-#line 77 "libxlu_cfg_l.l"
+#line 83 "libxlu_cfg_l.l"
{
xlu__cfgl_lexicalerror(ctx,"lexical
error");
BEGIN(0);
GOT(NEWLINE);
}
YY_BREAK
-case 15:
+case 16:
YY_RULE_SETUP
-#line 82 "libxlu_cfg_l.l"
+#line 88 "libxlu_cfg_l.l"
YY_FATAL_ERROR( "flex scanner jammed" );
YY_BREAK
-#line 948 "libxlu_cfg_l.c"
+#line 959 "libxlu_cfg_l.c"
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(lexerr):
yyterminate();
@@ -1242,7 +1251,7 @@ static int yy_get_next_buffer (yyscan_t
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = (int) yy_def[yy_current_state];
- if ( yy_current_state >= 34 )
+ if ( yy_current_state >= 35 )
yy_c = yy_meta[(unsigned int) yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
@@ -1271,11 +1280,11 @@ static int yy_get_next_buffer (yyscan_t
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = (int) yy_def[yy_current_state];
- if ( yy_current_state >= 34 )
+ if ( yy_current_state >= 35 )
yy_c = yy_meta[(unsigned int) yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
- yy_is_jam = (yy_current_state == 33);
+ yy_is_jam = (yy_current_state == 34);
return yy_is_jam ? 0 : yy_current_state;
}
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