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view lwcc/lwcc.c @ 264:346966cffeef
Clean up various warnings when building under -Wall
Add some gimmicks to prevent fread() and fwrite() warnings about ignoring
the return value. Yes, this is probably not a good thing to do, but doing
something with a non-success return value is going to involve crashing out
or something anyway.
Also fix several warnings about variables used while possibly uninitialized.
The code flow shows that this cannot be the case but initializing them to a
plausible value at declaration time costs pretty much nothing and it makes
gcc happy.
Also caught a use of | instead of || which probably would have caused a
certain check for duplicate declarations in __os9 sections to behave oddly.
author | William Astle <lost@l-w.ca> |
---|---|
date | Wed, 06 Feb 2013 21:43:10 -0700 |
parents | 68f41eaf44f2 |
children |
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/* This is the front-end program for the C compiler. Copyright © 2012 William Astle This file is part of LWTOOLS. LWTOOLS is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <lw_alloc.h> #include <lw_string.h> #include <lw_cmdline.h> /* command line option handling */ #define PROGVER "lwcc from " PACKAGE_STRING char *program_name; /* global state */ char *output_file = NULL; int debug_level = 0; static struct lw_cmdline_options options[] = { { "output", 'o', "FILE", 0, "Output to FILE"}, { "debug", 'd', "LEVEL", lw_cmdline_opt_optional, "Set debug mode"}, { 0 } }; static int parse_opts(int key, char *arg, void *state) { switch (key) { case 'o': if (output_file) lw_free(output_file); output_file = lw_strdup(arg); break; case 'd': if (!arg) debug_level = 50; else debug_level = atoi(arg); break; case lw_cmdline_key_end: break; case lw_cmdline_key_arg: printf("Input file: %s\n", arg); break; default: return lw_cmdline_err_unknown; } return 0; } static struct lw_cmdline_parser cmdline_parser = { options, parse_opts, "INPUTFILE", "lwcc, a HD6309 and MC6809 cross-compiler\vPlease report bugs to lost@l-w.ca.", PROGVER }; int main(int argc, char **argv) { program_name = argv[0]; /* parse command line arguments */ lw_cmdline_parse(&cmdline_parser, argc, argv, 0, 0, NULL); if (!output_file) { output_file = lw_strdup("a.out"); } exit(0); }