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| author | Bill King <bking@trolltech.com> | 2009-12-15 03:09:12 (GMT) |
|---|---|---|
| committer | Bill King <bking@trolltech.com> | 2009-12-15 03:09:12 (GMT) |
| commit | 82ec0a6c26c683dedd20fb6dd3923dce98c3f7e3 (patch) | |
| tree | 47e095977dc9ae6e20bedff0b1e8f963ede741e5 /src/sql | |
| parent | 504d6d4ac0d782c1fbca1f2dc1e8425dac773113 (diff) | |
| download | Qt-82ec0a6c26c683dedd20fb6dd3923dce98c3f7e3.zip Qt-82ec0a6c26c683dedd20fb6dd3923dce98c3f7e3.tar.gz Qt-82ec0a6c26c683dedd20fb6dd3923dce98c3f7e3.tar.bz2 | |
(ODBC) Fixes segfault when error string is larger than 256 chars.
SqlServer can throw custom error messages (via RaiseError) that can be
up to 8000 chars long. Fixed this with a pre-query as to the length of
the error string, then allocating enough space to retrieve the whole
error string at once.
Task-number: QTBUG-6618
Reviewed-by: Derick Hawcroft
Diffstat (limited to 'src/sql')
| -rw-r--r-- | src/sql/drivers/odbc/qsql_odbc.cpp | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/src/sql/drivers/odbc/qsql_odbc.cpp b/src/sql/drivers/odbc/qsql_odbc.cpp index e686873..fdf0c2c 100644 --- a/src/sql/drivers/odbc/qsql_odbc.cpp +++ b/src/sql/drivers/odbc/qsql_odbc.cpp @@ -172,28 +172,39 @@ static QString qWarnODBCHandle(int handleType, SQLHANDLE handle, int *nativeCode SQLSMALLINT msgLen = 0; SQLRETURN r = SQL_NO_DATA; SQLTCHAR state_[SQL_SQLSTATE_SIZE+1]; - SQLTCHAR description_[SQL_MAX_MESSAGE_LENGTH]; + QVarLengthArray<SQLTCHAR> description_(SQL_MAX_MESSAGE_LENGTH); QString result; int i = 1; description_[0] = 0; + r = SQLGetDiagRec(handleType, + handle, + i, + state_, + &nativeCode_, + 0, + NULL, + &msgLen); + if(r == SQL_NO_DATA) + return QString(); + description_.resize(msgLen+1); do { r = SQLGetDiagRec(handleType, handle, i, - (SQLTCHAR*)state_, + state_, &nativeCode_, - (SQLTCHAR*)description_, - SQL_MAX_MESSAGE_LENGTH, /* in bytes, not in characters */ + description_.data(), + description_.size(), &msgLen); if (r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO) { if (nativeCode) *nativeCode = nativeCode_; QString tmpstore; #ifdef UNICODE - tmpstore = QString((const QChar*)description_, msgLen); + tmpstore = QString((const QChar*)description_.data(), msgLen); #else - tmpstore = QString::fromLocal8Bit((const char*)description_, msgLen); + tmpstore = QString::fromLocal8Bit((const char*)description_.data(), msgLen); #endif if(result != tmpstore) { if(!result.isEmpty()) |