On 09/07/2020 11:44, Duncan Moore wrote:
First of all, many thanks to everyone who's contributed to the latest release.There are a couple of issues with isblank(): 1) In <ctype.h>, isblank() is incorrectly defined the same as isspace(): �� #� define isspace(c) (__ctype[(int) (c)] & ___ctype_white) �� #� define isblank(c) (__ctype[(int) (c)] & ___ctype_white) 2) When there's a function pointer to isblank(), I get a link failure: "undefined reference to `isblank'". So this program: #include <stdio.h> #include <ctype.h> int main(void) { � int (*space)(int)=isspace; � int (*blank)(int)=isblank;������ // Fails to link. � printf("%i\n",!!isspace('\n')); � printf("%i\n",!!space('\n')); � printf("%i\n",!!isblank('\n')); � printf("%i\n",!!blank('\n'));��� // Fails to link. � return 0; } should give: 1 1 0 0 whereas, if the 2 lines with comments are removed, I get: 1 1 1 and it fails to link otherwise.
Ok, thanks for that, I can see that I failed to provide an isblank() function to go with the macro. Some googling shows that isblank() should return true only for a space character or a tab. I could implement this easily in the function (and remove the macro) by testing the characters directly, e.g.: return (c == ' ' || c == '\t'); however, that doesn't go via the territory module like the other ctype functions/macros do. On the other hand, the territory module doesn't seem to distinguish this particular combination, so I may have to cheat as above. Does anyone know different or do I go with the cheat? Thanks, Lee. _______________________________________________ GCCSDK mailing list gcc@gccsdk.riscos.info Bugzilla: http://www.riscos.info/bugzilla/index.cgi List Info: http://www.riscos.info/mailman/listinfo/gcc Main Page: http://www.riscos.info/index.php/GCCSDK
