Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [compress.c:618:1: warning: data definition has no type or storage class
  618 | zero = 0;
      | ^~~~
compress.c:618:1: error: type defaults to 'int' in declaration of 'zero' [-Wimplicit-int]]: [The build is failing due to a compiler error related to a implicit ‘int’ declaration.]

Issue: The build failed because of compiler reports the error about [-Wimplicit-int].
Resolution: Check the file, line, and variable reported in the compiler error for a missing type declaration. Add  ‘int’ to this variable. 