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Prevent isolated second surrogate in U& syntax

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This commit is contained in:
Peter Eisentraut 2009-09-25 21:13:06 +00:00
parent ada0116e56
commit d39a84a612
1 changed files with 7 additions and 1 deletions
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8
src/backend/parser/scan.l
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@ -24,7 +24,7 @@
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/scan.l,v 1.160 2009/09/25 20:51:37 petere Exp $ * $PostgreSQL: pgsql/src/backend/parser/scan.l,v 1.161 2009/09/25 21:13:06 petere Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -1223,6 +1223,9 @@ litbuf_udeescape(unsigned char escape, base_yyscan_t yyscanner)
yyerror("invalid Unicode surrogate pair"); yyerror("invalid Unicode surrogate pair");
} }
} }
else if (is_utf16_surrogate_second(unicode))
yyerror("invalid Unicode surrogate pair");
if (is_utf16_surrogate_first(unicode)) if (is_utf16_surrogate_first(unicode))
pair_first = unicode; pair_first = unicode;
else else
@ -1253,6 +1256,9 @@ litbuf_udeescape(unsigned char escape, base_yyscan_t yyscanner)
yyerror("invalid Unicode surrogate pair"); yyerror("invalid Unicode surrogate pair");
} }
} }
else if (is_utf16_surrogate_second(unicode))
yyerror("invalid Unicode surrogate pair");
if (is_utf16_surrogate_first(unicode)) if (is_utf16_surrogate_first(unicode))
pair_first = unicode; pair_first = unicode;
else else