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| author | Peter Eisentraut <peter@eisentraut.org> | 2022-01-12 10:39:57 +0100 |
|---|---|---|
| committer | Peter Eisentraut <peter@eisentraut.org> | 2022-01-12 10:39:57 +0100 |
| commit | a18b6d2dc288dfa6e7905ede1d4462edd6a8af47 (patch) | |
| tree | 9748523dcb14e30affe25ec27bbc89c5b926955d | |
| parent | bed6ed3de9b3e62d8c6ee034513d04d769091927 (diff) | |
| download | postgresql-a18b6d2dc288dfa6e7905ede1d4462edd6a8af47.tar.gz postgresql-a18b6d2dc288dfa6e7905ede1d4462edd6a8af47.zip | |
ecpg: Catch zero-length Unicode identifiers correctly
The previous code to detect a zero-length identifier when using
Unicode identifiers such as
exec sql select u&"";
did not work. This fixes that.
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/82fafa79-331c-9d65-e51b-8b5d1b2383fc%40enterprisedb.com
| -rw-r--r-- | src/interfaces/ecpg/preproc/pgc.l | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/interfaces/ecpg/preproc/pgc.l b/src/interfaces/ecpg/preproc/pgc.l index 39e578e8685..9286a0355d6 100644 --- a/src/interfaces/ecpg/preproc/pgc.l +++ b/src/interfaces/ecpg/preproc/pgc.l @@ -737,7 +737,7 @@ cppline {space}*#([^i][A-Za-z]*|{if}|{ifdef}|{ifndef}|{import})((\/\*[^*/]*\*+ } <xui>{dquote} { BEGIN(state_before_str_start); - if (literallen == 2) /* "U&" */ + if (literallen == 0) mmerror(PARSE_ERROR, ET_ERROR, "zero-length delimited identifier"); /* The backend will truncate the identifier here. We do not as it does not change the result. */ base_yylval.str = psprintf("U&\"%s\"", literalbuf); |