11.8.2 Bugs Fixed

• open/[3,4] error handling.
• Critical virtual machine bugs in floating point arithmetic.
• Garbage collection now runs in constant space.
• Opening a UNIX fifo, or other non-seekable file, in text mode would not terminate until the other end closed the connection and then it would report a seek error. The problem was with the read-ahead needed to detect character encoding. Non-seekable files are now opened as if encoding_signature(false) were passed to open/4.
• Runtime systems generated by spld did not propagate exit code from halt/1.
• statistics/0 would sometimes report incorrect, including negative, “program space breakdown” for the “miscellaneous” and “interpreted code” categories.
• SP_event() handlers are no longer allowed to run during SP_exception_term() or SP_deinitialize().

  SP_exception_term() calls Prolog code which could allow SP_event() handlers to run, e.g. for library(timeout). In this case exceptions and failures from an SP_event() handler would be ignored and possibly confuse SP_exception_term().

  SP_deinitialize() does some cleanup by calling Prolog code. This can no longer cause SP_event() handlers to run.

• Fixed a memory corruption issue that happened during exception handling.
• Prologbeans:
  • Lists of one character atoms were incorrectly transferred from Java to SICStus.
  • The example sessionsum was missing the line:

                   pSession.connect();
              

    after the declaration of pSession.

  • Session listeners were not notified when a client closed the stream.
• Jasper: A memory leak in multithread mode.
• Debugger:
  A file/[1,2] breakpoint test or action would raise an exception when used with uninstantiated first (file name) argument.
  • Some conditional breakpoints could not be handled by SU_messages message processing. This sometimes caused a raw message term to be presented in the debugger.
  • Sometimes breakpoint tests were evaluated with the wrong value for the bid/1 breakpoint condition. The bid/1 breakpoint condition was not always reset to bid(off) when no breakpoint was selected. The documentation was updated to correctly say bid(off) instead of bid(none).
• Sometimes SICStus would enter an infinite loop if the error stream was closed in the other read-end. This could happen, e.g. when SICStus was invoked as a subprocess and the parent process exited ungracefully.
• Some Prolog code would not compile in profiledcode mode.
• Spurious type errors in several library modules.
• library(objects), library(structs): fixed a 64-bit issue, and putting integers now checks for overflows.
• library(avl): bug in avl_max/3.
• library(clpfd): bug fixes for circuit/1, table/[2,3], lex_chain/[1,2], #\=.
• library(bdb):
  • db_open/5 could crash if the option cache_size/1 was passed.
  • Very long filenames could cause crashes.
  • Did not work reliably with non-ASCII file names.
  • db_enumerate/3, db_sync/1, db_make_iterator/2, db_iterator_next/3 and db_iterator_done/1 crashed if called after the database had been closed.