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| From | Kaz Kylheku <330-706-9395@kylheku.com> |
| Newsgroups | comp.compilers |
| Subject | Re: warning: assignment makes pointer from integer without a cast[enabled by default] yylval=atoi(yytext); |
| Date | Wed, 24 Feb 2016 15:56:17 +0000 (UTC) |
| Organization | Aioe.org NNTP Server |
| Lines | 22 |
| Sender | news@iecc.com |
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| Message-ID | <16-02-006@comp.compilers> (permalink) |
| References | <16-02-003@comp.compilers> |
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| Keywords | yacc, debug |
| Posted-Date | 24 Feb 2016 23:54:39 EST |
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| Xref | csiph.com comp.compilers:1669 |
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On 2016-02-22, Danny Pereira <dannyjpereira@gmail.com> wrote: > *purelex.l:12:8: warning: assignment makes pointer from integer without a > cast [enabled by default] yylval=atoi(yytext); * This tells you that yylval does not have type int as you expect; it is in fact a pointer to something. Though presented as a "warning" in GCC, assigning an integer to a pointer is a constraint violation according to ISO C, requiring a diagnostic from a conforming implementation, and the behavior is not well defined if the code is translated and executed anyway. It is a bad idea to ignore this diagnostic. Your yylval is a pointer because of the "Bison bridge" option. This is documented in the GNU Flex manual: A.2 C Scanners with Bison Parsers [... few paragraphs down ...] Note that the macros `yylval' and `yylloc' evaluate to pointers.
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Re: warning: assignment makes pointer from integer without a cast[enabled by default] yylval=atoi(yytext); Danny Pereira <dannyjpereira@gmail.com> - 2016-02-22 09:28 +0530 Re: warning: assignment makes pointer from integer without a cast[enabled by default] yylval=atoi(yytext); Kaz Kylheku <330-706-9395@kylheku.com> - 2016-02-24 15:56 +0000 Re: warning: assignment makes pointer from integer without a cast[enabled by default] yylval=atoi(yytext); George Neuner <gneuner2@comcast.net> - 2016-02-24 13:07 -0500
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