Add some (void) casts to document that we're discarding returns.

diff --git a/main.c b/main.c
index 354d8bc0c3e0a8d87df3aaa2354e5801af058d80..15869defdedde5563eeb46448cd07419ba3b7346 100644 (file)
--- a/main.c
+++ b/main.c
@@ -213,7 +213,7 @@ static void read_scf(struct scf_t *scf)
     stat(scf->file, &sb);
     if (verbose)
        fprintf(stderr, "%% Reading hash list %s...    ", scf->file);
-    fread(&filecount, sizeof(linecount_t), 1, scf->fp);
+    (void)fread(&filecount, sizeof(linecount_t), 1, scf->fp);
     filecount = ntohl(filecount);
     while (filecount--)
     {
@@ -221,23 +221,23 @@ static void read_scf(struct scf_t *scf)
        linenum_t       lines, chunks;
        struct filehdr_t        *filehdr;
 
-       fgets(buf, sizeof(buf), scf->fp);
+       (void)fgets(buf, sizeof(buf), scf->fp);
        *strchr(buf, '\n') = '\0';
 
-       fread(&lines, sizeof(linenum_t), 1, scf->fp);
+       (void)fread(&lines, sizeof(linenum_t), 1, scf->fp);
        lines = FROMNET(lines);
        filehdr = register_file(buf, lines);
 
-       fread(&chunks, sizeof(linenum_t), 1, scf->fp);
+       (void)fread(&chunks, sizeof(linenum_t), 1, scf->fp);
        chunks = FROMNET(chunks);
        while (chunks--)
        {
            struct hash_t       this;
 
-           fread(&this.start, sizeof(linenum_t), 1, scf->fp);
-           fread(&this.end,  sizeof(linenum_t), 1, scf->fp);
-           fread(&this.hash, sizeof(hashval_t), 1, scf->fp);
-           fread(&this.flags, sizeof(flag_t), 1, scf->fp);
+           (void)fread(&this.start, sizeof(linenum_t), 1, scf->fp);
+           (void)fread(&this.end,  sizeof(linenum_t), 1, scf->fp);
+           (void)fread(&this.hash, sizeof(hashval_t), 1, scf->fp);
+           (void)fread(&this.flags, sizeof(flag_t), 1, scf->fp);
            this.start = FROMNET(this.start);
            this.end = FROMNET(this.end);
            corehook(this, filehdr);
@@ -249,7 +249,7 @@ static void read_scf(struct scf_t *scf)
     if (verbose)
        fprintf(stderr, "\b\b\b\b100%%...done, %d shreds\n", hashcount);
 
-    fread(&scf->totallines, sizeof(linecount_t), 1, scf->fp);
+    (void)fread(&scf->totallines, sizeof(linecount_t), 1, scf->fp);
     scf->totallines = ntohl(scf->totallines);
 }
 
@@ -303,10 +303,12 @@ static void init_scf(char *file, struct scf_t *scf, const int readfile)
        scf->fp   = fopen(scf->file, "r");
        if (!scf->fp)
        {
-           fprintf(stderr, "comparator: file %s, %s", scf->file, strerror(errno));
+           (void)fprintf(stderr, 
+                         "comparator: file %s, %s", 
+                         scf->file, strerror(errno));
            exit(1);
        }
-       fgets(buf, sizeof(buf), scf->fp);
+       (void)fgets(buf, sizeof(buf), scf->fp);
        if (strncmp(buf, "#SCF-A 2.0", 9))
        {
            fprintf(stderr, 
@@ -526,7 +528,7 @@ main(int argc, char *argv[])
     {
        if (dir)
        {
-           chdir(dir);
+           (void)chdir(dir);
        }
        write_scf(argv[optind], redirect(outfile));
        exit(0);
@@ -561,11 +563,11 @@ main(int argc, char *argv[])
            if (dir)
            {
                olddir = getcwd(NULL, PATH_MAX);
-               chdir(dir);
+               (void)chdir(dir);
            }
            write_scf(source, ofp);
            if (dir)
-               chdir(olddir);
+               (void)chdir(olddir);
            fclose(ofp);
        }
        else
@@ -573,12 +575,12 @@ main(int argc, char *argv[])
            if (dir)
            {
                olddir = getcwd(NULL, PATH_MAX);
-               chdir(dir);
+               (void)chdir(dir);
            }
            init_scf(source, scf, 0);
            scf->totallines = merge_tree(source);
            if (dir)
-               chdir(olddir);
+               (void)chdir(olddir);
        }
     }