[csmith-project/csmith] 71e18b: Bug #57: Removal of unnecessary null pointer checks

[Xuejun Yang <noreply@github.com>]

  Branch: refs/heads/master
  Home:   https://github.com/csmith-project/csmith
  Commit: 71e18be171d625bd0550e2b3a9fb6b67b33026f5
      https://github.com/csmith-project/csmith/commit/71e18be171d625bd0550e2b3a9fb6b67b33026f5
  Author: Markus Elfring <elfring@users.sourceforge.net>
  Date:   2018-12-02 (Sun, 02 Dec 2018)

  Changed paths:
    M src/DepthSpec.h
    M src/Enumerator.h
    M src/Function.cpp
    M src/Probabilities.cpp
    M src/RandomNumber.cpp
    M src/SimpleDeltaSequence.cpp
    M src/Variable.cpp

  Log Message:
  -----------
  Bug #57: Removal of unnecessary null pointer checks

The C++ programming language tolerates the passing of null pointers
for delete expressions.

See also:
https://isocpp.org/wiki/faq/freestore-mgmt#delete-handles-null

* Thus omit extra checks at a few places.

* Remove also the resetting of two variables.

* The source code could be simplified a bit for three iterators.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>


  Commit: 52e36d8e6c8ee78410151d7312aa81e674ae91fa
      https://github.com/csmith-project/csmith/commit/52e36d8e6c8ee78410151d7312aa81e674ae91fa
  Author: jxyang <nitsnow@gmail.com>
  Date:   2019-04-20 (Sat, 20 Apr 2019)

  Changed paths:
    M src/DepthSpec.h
    M src/Enumerator.h
    M src/Function.cpp
    M src/Probabilities.cpp
    M src/RandomNumber.cpp
    M src/Variable.cpp

  Log Message:
  -----------
  Merge branch 'Remove_unnecessary_null_pointer_checks' of https://github.com/elfring/csmith into elfring-Remove_unnecessary_null_pointer_checks


  Commit: c7e6a904f7dda4e0554ee5236333ed475290ab47
      https://github.com/csmith-project/csmith/commit/c7e6a904f7dda4e0554ee5236333ed475290ab47
  Author: jxyang <nitsnow@gmail.com>
  Date:   2019-04-20 (Sat, 20 Apr 2019)

  Changed paths:
    M src/DepthSpec.h
    M src/Enumerator.h
    M src/Function.cpp
    M src/Probabilities.cpp
    M src/RandomNumber.cpp
    M src/Variable.cpp

  Log Message:
  -----------
  Merge branch 'elfring-Remove_unnecessary_null_pointer_checks'


Compare: https://github.com/csmith-project/csmith/compare/4f540a91e4e4...c7e6a904f7dd