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| author | Bor Grošelj Simić <bor.groseljsimic@telemach.net> | 2022-01-19 15:03:59 +0100 |
|---|---|---|
| committer | Quentin Carbonneaux <quentin@c9x.me> | 2022-01-23 11:48:08 +0100 |
| commit | 55a1522b555c3b9f8745285e9ce3009c2f9b30ff (patch) | |
| tree | f680b5bf2f07472c24d3ac1c022ac4daae92ec3a | |
| parent | e91d12158122b23271ff49de8977c92fef7f3908 (diff) | |
| download | roux-55a1522b555c3b9f8745285e9ce3009c2f9b30ff.tar.gz | |
check for fopen() errors for output file
| -rw-r--r-- | main.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/main.c b/main.c index abef591..a52551e 100644 --- a/main.c +++ b/main.c @@ -126,8 +126,13 @@ main(int ac, char *av[]) } break; case 'o': - if (strcmp(optarg, "-") != 0) + if (strcmp(optarg, "-") != 0) { outf = fopen(optarg, "w"); + if (!outf) { + fprintf(stderr, "cannot open '%s'\n", optarg); + exit(1); + } + } break; case 't': for (tm=tmap;; tm++) { |