c++ - Is it considered good style to dereference `new` pointer? -


to avoid keep having use -> , instead work directly object, acceptable practice do:

obj x = *(new obj(...)); ... delete &obj;

this not poor practice, but:

  1. leaking memory (most likely, unless using pattern not visible code provided), since obj store copy of original object created new expression, , pointer object returned new lost;
  2. most importantly, undefined behavior, since passing delete pointer object not allocated new. per paragraph 5.3.5/2 of c++11 standard:

[...] in first alternative (delete object), value of operand of delete may null pointer value, pointer non-array object created previous new-expression, or pointer subobject (1.8) representing base class of such object (clause 10). if not, behavior undefined.


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