9adafbc11
Denys Vlasenko
2024-12-13
Subject
cut: prevent infinite loop if -F REGEX matches empty delimiter
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coreutils/cut.c+3 -1
| @@ -228,7 +228,9 @@ static void cut_file(FILE *file, const char *delim, const char *odelim, | |
| continue; | |
| } | |
| end = next + rr.rm_so; | |
| - | next += rr.rm_eo; |
| + | next += (rr.rm_eo ? rr.rm_eo : 1); |
| + | /* ^^^ advancing by at least 1 prevents infinite loops */ |
| + | /* testcase: echo "no at sign" | cut -d'@*' -F 1- */ |
| } else | |
| #endif | |
| { | |