tools: fix up warnings with -Wwrite-strings.

[ccan] / tools / ccanlint / ccanlint.c

diff --git a/tools/ccanlint/ccanlint.c b/tools/ccanlint/ccanlint.c
index 231ae7c05c45e0b1050b834b096b48ddb634f23d..291a151842e0ce0d1126ae8ce6250ad68dc8dc48 100644 (file)
--- a/tools/ccanlint/ccanlint.c
+++ b/tools/ccanlint/ccanlint.c
@@ -32,6 +32,7 @@
 #include <ccan/opt/opt.h>
 #include <ccan/foreach/foreach.h>
 #include <ccan/grab_file/grab_file.h>
+#include <ccan/cast/cast.h>
 
 int verbose = 0;
 static LIST_HEAD(compulsory_tests);
@@ -43,8 +44,8 @@ static struct btree *info_exclude;
 static unsigned int timeout;
 
 /* These are overridden at runtime if we can find config.h */
-const char *compiler = CCAN_COMPILER;
-const char *cflags = CCAN_CFLAGS;
+const char *compiler = NULL;
+const char *cflags = NULL;
 
 const char *config_header;
 
@@ -301,7 +302,7 @@ static void init_tests(void)
        }
 }
 
-static int show_tmpdir(char *dir)
+static int show_tmpdir(const char *dir)
 {
        printf("You can find ccanlint working files in '%s'\n", dir);
        return 0;
@@ -499,7 +500,7 @@ static char *demangle_string(char *string)
                if (string[i] == '\\') {
                        char repl;
                        unsigned len = 0;
-                       char *p = strchr(mapfrom, string[i+1]);
+                       const char *p = strchr(mapfrom, string[i+1]);
                        if (p) {
                                repl = mapto[p - mapfrom];
                                len = 1;
@@ -508,7 +509,7 @@ static char *demangle_string(char *string)
                                        repl = (string[i+2]-'0')*16
                                                + string[i+3]-'0';
                                        len = 3;
-                               } else if (isdigit(string[i+1])) {
+                               } else if (cisdigit(string[i+1])) {
                                        repl = (string[i+2]-'0')*8*8
                                                + (string[i+3]-'0')*8
                                                + (string[i+4]-'0');
@@ -552,20 +553,33 @@ static void read_config_header(void)
                if (!get_token(line, "define"))
                        continue;
                sym = get_symbol_token(lines, line);
-               if (streq(sym, "CCAN_COMPILER")) {
+               if (streq(sym, "CCAN_COMPILER") && !compiler) {
                        compiler = demangle_string(lines[i]);
+                       if (!compiler)
+                               errx(1, "%s:%u:could not parse CCAN_COMPILER",
+                                    fname, i+1);
                        if (verbose > 1)
                                printf("%s: compiler set to '%s'\n",
                                       fname, compiler);
-               } else if (streq(sym, "CCAN_CFLAGS")) {
+               } else if (streq(sym, "CCAN_CFLAGS") && !cflags) {
                        cflags = demangle_string(lines[i]);
+                       if (!cflags)
+                               errx(1, "%s:%u:could not parse CCAN_CFLAGS",
+                                    fname, i+1);
                        if (verbose > 1)
                                printf("%s: compiler flags set to '%s'\n",
                                       fname, cflags);
                }
        }
-       if (!compiler || !cflags)
-               errx(1, "Problem parsing %s", fname);
+       if (!compiler)
+               compiler = CCAN_COMPILER;
+       if (!cflags)
+               compiler = CCAN_CFLAGS;
+}
+
+static char *opt_set_const_charp(const char *arg, const char **p)
+{
+       return opt_set_charp(arg, cast_const2(char **, p));
 }
 
 int main(int argc, char *argv[])
@@ -605,6 +619,10 @@ int main(int argc, char *argv[])
        opt_register_arg("--target <testname>", opt_set_charp,
                         NULL, &target,
                         "only run one test (and its prerequisites)");
+       opt_register_arg("--compiler <compiler>", opt_set_const_charp,
+                        NULL, &compiler, "set the compiler");
+       opt_register_arg("--cflags <flags>", opt_set_const_charp,
+                        NULL, &cflags, "set the compiler flags");
        opt_register_noarg("-?|-h|--help", opt_usage_and_exit,
                           "\nA program for checking and guiding development"
                           " of CCAN modules.",
@@ -653,7 +671,8 @@ int main(int argc, char *argv[])
        }
 
        /* --target overrides known FAIL from _info */
-       add_info_options(m->info_file, !target);
+       if (m->info_file)
+               add_info_options(m->info_file, !target);
 
        while ((i = get_next_test(&normal_tests)) != NULL)
                run_test(i, summary, &score, &total_score, m);