comm: Properly handle I/O errors when reading input #18190

Job	Run time
Build and test uufuzz examples	1m 54s
Build the fuzzers	3m 4s
Fuzz (fuzz_date, true)	1m 57s
Fuzz (fuzz_echo, true)	2m 13s
Fuzz (fuzz_parse_glob, true)	2m 1s
Fuzz (fuzz_cut, false)	1m 8s
Fuzz (fuzz_parse_size, false)	2m 12s
Fuzz (fuzz_parse_time, false)	1m 31s
Fuzz (fuzz_split, false)	2m 12s
Fuzz (fuzz_cksum, false)	1m 31s
Fuzz (fuzz_printf, true)	2m 13s
Fuzz (fuzz_seq_parse_number, false)	1m 9s
Fuzz (fuzz_tr, false)	1m 23s
Fuzz (fuzz_env, false)	1m 8s
Fuzz (fuzz_expr, true)	2m 12s
Fuzz (fuzz_non_utf8_paths, true)	2m 9s
Fuzz (fuzz_dirname, true)	2m 4s
Fuzz (fuzz_seq, false)	1m 10s
Fuzz (fuzz_test, true)	1m 49s
Fuzz (fuzz_wc, false)	1m 11s
Fuzz (fuzz_sort, false)	1m 7s
Fuzzing Summary	9s
Build the fuzzers	3m 4s
Fuzz (fuzz_seq, false)	1m 10s
Fuzz (fuzz_cut, false)	1m 8s
Fuzz (fuzz_echo, true)	2m 12s
Fuzz (fuzz_date, true)	2m 8s
Fuzz (fuzz_printf, true)	2m 9s
Fuzz (fuzz_parse_glob, true)	2m 16s
Fuzz (fuzz_sort, false)	1m 50s
Fuzz (fuzz_split, false)	1m 37s
Fuzz (fuzz_test, true)	2m 17s
Fuzz (fuzz_expr, true)	2m 10s
Fuzz (fuzz_non_utf8_paths, true)	2m 22s
Fuzz (fuzz_wc, false)	1m 13s
Fuzz (fuzz_dirname, true)	2m 21s
Fuzz (fuzz_parse_size, false)	1m 13s
Fuzz (fuzz_env, false)	1m 8s
Fuzz (fuzz_seq_parse_number, false)	1m 9s
Fuzz (fuzz_tr, false)	1m 23s
Fuzz (fuzz_cksum, false)	1m 31s
Fuzz (fuzz_parse_time, false)	1m 31s
Build and test uufuzz examples	1m 54s
Fuzzing Summary	6s
	1h 15m 19s

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