13.20.2 Bugs Fixed

• Compiler bug, surfaced for example for r(b) :- Y = b, t(X,Y)..
• Error handling bug in floating point overflows caused (a) spurious memory resource errors, (b) different interpreted and compiled behavior.
• SP_printf() stopped working if the output exceeded 2048 bytes.
• Unintended limitation, max 100 million interpreted clauses in memory, lifted.
• predicate_property/2 with nonvar second argument would lose solutions.
• add_breakpoint/2 warns if an undefined predicate is specified; it used to silently accept any well-formed predicate identifier.
• length/2: used to loop if first argument cyclic or second argument very large. Conformance with proposed future ISO standard.
• when/2 could cause stack overflow.
• Declarations are silently ignored if they would have no effect.
• [File|Files] now uses the calling module context for the second (Files) argument, as documented.
• ensure_loaded/1 would keep reloading non-module ‘.po’ files whose name did not correspond to an existing source file.
• stream_property(S,encoding(CS)) would succeed twice for bi-directional text streams. It now succeeds at most once and the per-direction encoding information can be obtained with the new stream properties input_encoding/1 and output_encoding/1.
• call_cleanup/2: memory management could cause the cleanup action to be delayed.
• In trace mode, the debugger would stop at spurious calls among code in hidden modules, which was never intended.
• On Windows, the absolute_file_name/3 option glob/1 is now case-normalized, just like the file name.
• aggregate:term_variables/3 steadfastness bug. Note that this is largely made obsolecent by the new built-in term_variables/2.
• library(xref) and spxref would loop on cyclic import dependencies.
• library(gauge): logarithmic scale was broken.
• library(gauge): On OS X, menus had invisible text.
• library(process): On Windows, process_create/3 did not pass empty arguments correctly.
• library(process): Some process_create/3 boolean options did not accept the value ‘false’.
• CLPFD:
  • Bad use of the global constraint API could crash SICStus.
  • Critical bug in bounds-consistent all_different/1.
  • Enabling FDBG could cause missing propagation.
  • geost/[2,3,4]: memory performance bug; ignored the lex/1 option in greedy assignment mode
  • Bugs in flattening logical and arithmetical expressions.
  • X #= Y, with unbound X and Y, was handled by unification. This failed to type X and Y as domain variables, and was often bad for performance. Now, such equations are handled by a propagator.
• ZINC:
  • Parsing floats was broken, causing spurious errors.
  • The fzn_file/1 and ozn_file/1 options misbehaved if used without explicit ‘.fzn’ and ‘.ozn’ extensions.
  • Empty arrays caused spurious existence errors.
• CHR:
  • ‘+’ and ‘-’ are no longer incompatibly defined as prefix operators.
• In the build for 64-bit OS X 10.8, library(tcltk) would crash the process.
• The ‘codes’ command specification was incorrectly documented as ‘chars’.
• On Windows, pillow:fetch_url/3 would sometimes time out for some web servers.
• A bug in Microsoft J# caused PrologBeans.NET to transmit some data incorrectly from Prolog to .NET.
• The splfr tool now ensures that the C compiler will find the generated headers also when the --namebase option specifies a folder.