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tests: fix warnings in push mode

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Fix warning with GCC 8, -DNDEBUG.

    422. push.at:83: testing Multiple impure instances ...
    input.y: In function 'main':
    input.c:1022:12: error: potential null pointer dereference [-Werror=null-dereference]
       if (!yyps->yynew && yyps->yyss != yyps->yyssa)
            ~~~~^~~~~~~

* data/yacc.c (pstate_delete): Do nothing if called on null pointer.
This commit is contained in:
Akim Demaille
2018-08-15 18:58:03 +02:00
parent bd07c76b0a
commit b01b80836d
2 changed files with 12 additions and 9 deletions
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doc/bison.texi
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@@ -13114,7 +13114,7 @@ Obsoleted by @code{%printer}.
The function to delete a parser instance, produced by Bison in push mode;
call this function to delete the memory associated with a parser.
@xref{Parser Delete Function, ,The Parser Delete Function
@code{yypstate_delete}}.
@code{yypstate_delete}}. Does nothing when called with a null pointer.
(The current push parsing interface is experimental and may evolve.
More user feedback will help to stabilize it.)
@end deffn