Not solved by any means, but there is typically only one GC-related paper per top-tier PL conference such as PLDI or ICFP these days. Many more GC results, part

Not solved by any means, but there is typically only one GC-related paper per top-tier PL conference such as PLDI or ICFP these days. Many more GC results, particularly for more actively developed systems where the changes tend to be incremental, are published at either ISMM (International Symposium on Memory Management) or MSPC (Memory Systems Performance and Correctness).