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fix(qgssfcgalengine): Fix memory leak in toWkb method

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This commit is contained in:
Jean Felder 2025-09-03 15:33:22 +02:00 committed by Nyall Dawson
parent 3b5e5c6039
commit c07bbfbd56
3 changed files with 20 additions and 13 deletions
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26
src/core/geometry/qgssfcgalengine.cpp
View File

@ -303,16 +303,16 @@ std::unique_ptr<QgsAbstractGeometry> QgsSfcgalEngine::toAbstractGeometry( const
sfcgal::errorHandler()->clearText( errorMsg );
CHECK_NOT_NULL( geom, out );
QgsConstWkbPtr ptr = QgsSfcgalEngine::toWkb( geom, errorMsg );
QByteArray wkbArray = QgsSfcgalEngine::toWkb( geom, errorMsg );
CHECK_SUCCESS( errorMsg, out );
out = QgsGeometryFactory::geomFromWkb( ptr );
QgsConstWkbPtr wkbPtr( wkbArray );
out = QgsGeometryFactory::geomFromWkb( wkbPtr );
if ( !out )
{
Qgis::WkbType sfcgalType = QgsSfcgalEngine::wkbType( geom );
QgsConstWkbPtr ptrError = QgsSfcgalEngine::toWkb( geom );
sfcgal::errorHandler()->addText( QStringLiteral( "WKB contains unmanaged geometry type (WKB:%1 / SFCGAL:%2" ) //
.arg( static_cast<int>( ptrError.readHeader() ) ) //
.arg( static_cast<int>( wkbPtr.readHeader() ) ) //
.arg( static_cast<int>( sfcgalType ) ),
__FILE__, __FUNCTION__, __LINE__ );
}
@ -380,17 +380,24 @@ sfcgal::shared_geom QgsSfcgalEngine::fromWkt( const QString &wkt, QString *error
return sfcgal::unique_geom( out );
}
QgsConstWkbPtr QgsSfcgalEngine::toWkb( const sfcgal::geometry *geom, QString *errorMsg )
QByteArray QgsSfcgalEngine::toWkb( const sfcgal::geometry *geom, QString *errorMsg )
{
sfcgal::errorHandler()->clearText( errorMsg );
CHECK_NOT_NULL( geom, QgsConstWkbPtr( nullptr, 0 ) );
CHECK_NOT_NULL( geom, QByteArray() );
char *wkbHex;
size_t len = 0;
sfcgal_geometry_as_wkb( geom, &wkbHex, &len );
CHECK_SUCCESS( errorMsg, QgsConstWkbPtr( nullptr, 0 ) );
QByteArray wkbArray( wkbHex, static_cast<int>( len ) );
return QgsConstWkbPtr( reinterpret_cast<unsigned char *>( wkbHex ), static_cast<int>( len ) );
#if SFCGAL_VERSION_MAJOR_INT > 2 || ( SFCGAL_VERSION_MAJOR_INT == 2 && SFCGAL_VERSION_MINOR_INT >= 1 )
sfcgal_free_buffer( wkbHex );
#else
free( wkbHex );
#endif
CHECK_SUCCESS( errorMsg, QByteArray() );
return wkbArray;
}
QString QgsSfcgalEngine::toWkt( const sfcgal::geometry *geom, int numDecimals, QString *errorMsg )
@ -685,7 +692,8 @@ QgsPoint QgsSfcgalEngine::centroid( const sfcgal::geometry *geom, QString *error
CHECK_SUCCESS( errorMsg, QgsPoint() );
CHECK_NOT_NULL( result, QgsPoint() );
QgsConstWkbPtr wkbPtr = QgsSfcgalEngine::toWkb( result, errorMsg );
QByteArray wkbArray = QgsSfcgalEngine::toWkb( result, errorMsg );
QgsConstWkbPtr wkbPtr( wkbArray );
QgsPoint out;
out.fromWkb( wkbPtr );

2
src/core/geometry/qgssfcgalengine.h
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@ -220,7 +220,7 @@ class CORE_EXPORT QgsSfcgalEngine
* \param geom geometry to perform the operation
* \param errorMsg Error message returned by SFGCAL
*/
static QgsConstWkbPtr toWkb( const sfcgal::geometry *geom, QString *errorMsg = nullptr );
static QByteArray toWkb( const sfcgal::geometry *geom, QString *errorMsg = nullptr );
/**
* Computes WKT string from \a geom.

5
src/core/geometry/qgssfcgalgeometry.cpp
View File

@ -127,11 +127,10 @@ std::unique_ptr<QgsSfcgalGeometry> QgsSfcgalGeometry::fromWkb( const QgsConstWkb
QByteArray QgsSfcgalGeometry::asWkb( QgsAbstractGeometry::WkbFlags ) const
{
sfcgal::errorHandler()->clearText( &mLastError );
QgsConstWkbPtr ptr = QgsSfcgalEngine::toWkb( mSfcgalGeom.get(), &mLastError );
QByteArray wkbArray = QgsSfcgalEngine::toWkb( mSfcgalGeom.get(), &mLastError );
CHECK_SUCCESS( &mLastError, QByteArray() );
const unsigned char *wkbUnsignedPtr = ptr;
return QByteArray( reinterpret_cast<const char *>( wkbUnsignedPtr ), ptr.remaining() );
return wkbArray;
}
QString QgsSfcgalGeometry::asWkt( int precision ) const