diff options
Diffstat (limited to 'c_emulator/riscv_sim.c')
| -rw-r--r-- | c_emulator/riscv_sim.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/c_emulator/riscv_sim.c b/c_emulator/riscv_sim.c index 5a73896..84ee04d 100644 --- a/c_emulator/riscv_sim.c +++ b/c_emulator/riscv_sim.c @@ -1,3 +1,4 @@ +#include <ctype.h> #include <getopt.h> #include <stdio.h> #include <stdlib.h> @@ -156,7 +157,10 @@ static void print_usage(const char *argv0, int ec) #endif struct option *opt = options; while (opt->name) { - fprintf(stdout, "\t -%c\t --%s\n", (char)opt->val, opt->name); + if (isprint(opt->val)) + fprintf(stdout, "\t -%c\t --%s\n", (char)opt->val, opt->name); + else + fprintf(stdout, "\t \t --%s\n", opt->name); opt++; } exit(ec); |