Verilator

==========================

**Minor:**

* Workaround GCC/clang bug with huge compile times. (1248)
* Support DPI open arrays. (909) (1245) [David Pierce, Victor Besyakov]
* Add INFINITELOOP warning. (1254) [Alex Solomatnikov]
* Support > 64 bit decimal $display.
* Support DPI time and svLogicVal. [Victor Besyakov]
Note older version incorrectly assumed svBitVal even for logicals.
* Support string len() method. [Victor Besyakov]
* Add error if always_comb has sensitivity list. [Arjen Roodselaar]
* Fix SystemC 2.3.2 compile error. (1251) [Tymoteusz Blazejczyk]
* Fix modport outputs being treated as inputs. (1246) [Jeff Bush]
* Fix false ALWCOMBORDER on interface references. (1247) [Josh Redford]
* Fix constant propagation across DPI imports of inout strings. [Victor Besyakov]
* Fix resolving inline nested interface names. (1250) [Arjen Roodselaar]
* Fix GCC false warning on array bounds. (2386)

==========================

**Minor:**

* Support self-recursive modules. (659) [Sean Moore, et al]
* Support $error/$warning in elaboration time blocks.
* Support $size/$bits/etc on type references.
* Add error when driving input-only modport. (1110) [Trevor Elbourne]
* Add BSSPACE and COLONPLUS lint warnings.
* Detect MSB overflow when under VL_DEBUG. (1238) [Junyi Xi]
* Add data types to --xml. [Rui Terra]
* Fix partial slicing with pattern assignments. (991) [Johan Bjork]
* Fix false unused warning on interfaces. (1241) [Laurens van Dam]
* Fix error on "unique case" with no cases.
* Fix MacOS portability. (1232) [Jeff Bush]

==========================

**Major:**

* Add new examples/ directory with appropriate examples. This replaces the
old test_c and test_sc directories.

**Minor:**

* Add --getenv option for simplifying Makefiles.
* Add --x-initial option for specifying initial value assignment behavior.
* Add --no-relative-cfuncs and related default optimization. (1224) [John Coiner]
* Add /*verilator tag*/ for XML extraction applications. [Chris Randall]
* The internal test_verilated test directory is moved to be part of test_regress.
* The experimental VL_THREADED setting (only, not normal mode) now requires C++11.
* Fix over-aggressive inlining. (1223) [John Coiner]
* Fix Ubuntu 17.10 issues. (1223 partial). [John Coiner]
* Fix compiler warning when WIDTH warning ignored on large compare.
* Fix memory leak in VerilatedVcd dumps. (1222 partial) [Shareef Jalloq]
* Fix unnecessary Vdly variables. (1224 partial) [John Coiner]
* Fix conditional slices and add related optimizations.
* Fix \`\` expansion of `defines. (1225) (1227) (1228) [Odd Magne Reitan]
* Fix -E duplicating output. (1226) [Odd Magne Reitan]
* Fix float-conversion warning. (1229) [Robert Henry]
* Fix MacOS portability. (1230) (1231) [Jeff Bush]

==========================

**Major:**

* Verilated headers no longer "use namespace std;"
User's code without "std::" prefixes may need "use namespace std;" to compile.

**Minor:**

* Support or/and/xor array intrinsic methods. (1210) [Michael Popoloski]
* Support package export. (1217) [Usuario Eda]
* Support module port parameters without defaults. (1213) [Michael Popoloski]
* Add performance information to --stats file.
* Simplify VL_CONST_W macro generation for faster compiles.
* Optimize improvements for Shift-And, and replication constructs.
* Fix ordering of arrayed cell wide connections. (1202 partial) [Michael Popoloski]
* Fix LITENDIAN warning on arrayed cells. (1202) [Michael Popoloski]
* Fix enum ranges without colons. (1204) [Michael Popoloski]
* Fix GCC noreturn compile error. (1209) [Michael Popoloski]
* Fix constant function default parameters. (1211) [Michael Popoloski]
* Fix non-colon array of interface modports. (1212) [Michael Popoloski]
* Fix .name connections on interfaces. (1214) [Michael Popoloski]
* Fix wide array indices causing compile error.

==========================

**Major:**

* SystemPerl mode (-sp-deprecated) has been removed.

**Minor:**

* Update keyword warnings to include C++11 and others.

==========================

**Minor:**

* Support x in $readmem. (1180) [Arthur Kahlich]
* Support packed struct DPI imports. (1190) [Rob Stoddard]
* Fix GCC 6 warnings.
* Fix compile error on unused VL_VALUEPLUSARGS_IW. (1181) [Thomas J Whatson]
* Fix undefined VL_POW_WWI. [Clifford Wolf]
* Fix internal error on unconnected inouts. (1187) [Rob Stoddard]