cleanup: Fix typos in comments.

[libfirm] / ir / libcore / lc_opts.c

diff --git a/ir/libcore/lc_opts.c b/ir/libcore/lc_opts.c
index 48fa148..5d34a93 100644 (file)
--- a/ir/libcore/lc_opts.c
+++ b/ir/libcore/lc_opts.c
@@ -699,14 +699,14 @@ int lc_opt_from_single_arg(const lc_opt_entry_t *root,
 {
        const lc_opt_entry_t *grp = root;
        size_t n                  = strlen(arg);
-       size_t n_prefix           = opt_prefix ? strlen(opt_prefix) : 0;
+       size_t n_prefix           = opt_prefix != NULL ? strlen(opt_prefix) : 0;
        int error                 = 0;
        int ret                   = 0;
 
        lc_opt_err_info_t err;
        const char *end, *eqsign;
 
-       if (n >= n_prefix && strncmp(opt_prefix, arg, n_prefix) == 0) {
+       if (n >= n_prefix && (n_prefix == 0 || strncmp(opt_prefix, arg, n_prefix) == 0)) {
                arg = arg + n_prefix;
 
                /* find the next delimiter (the -) and extract the string up to