swift

0a4d3528 - De-register temporary buffer 'SourceFile's created during availability attribute argument parsing

De-register temporary buffer 'SourceFile's created during availability attribute argument parsing Otherwise these source file objects linger in the source manager but they refer to a fully-temporary 'ASTContext' which does not exist after parsing is complete, which means they cannot be used in any way and attempting to do so would lead to a crash.