A reactor for gasification of feedstocks for gasification, adapted to handle feedstocks for gasification comprising organic and inorganic compounds, wherein said compounds during gasification in the presence of oxygen and/or air at a gasification temperature, wherein the melting temperatures of the constituent inorganic compounds is at least 100°C lower than the gasification temperature, are converted to a hot reducing gas above 950°C but below 1300°C and comprising CO, CO 2 , ¾ and H 2 O (g), and a salt melt, wherein said reactor (100) comprises an outer reactor shell (7) and an inner refractory lining (2, 3, 4), wherein a compliant structure (5) is placed in a ring-shaped coaxial expansion space (6) between said outer reactor shell (7) and said inner refractory lining (2, 3, 4), wherein said compliant structure has a resilience and comprises a plurality of substantially parallel arranged metal profiles (12), adapted to distribute the compressive load between said reactor shell (7) and the inner refractory lining (2, 3, 4) in that the metal profiles (12) are positioned such that they form substantially parallel, pressure-absorbing bridges, wherein said profiles (12) are elastically deformed in a first compression interval (ΔΥ1) and plastically deformed in a second compression interval (ΔΥ2).