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| author | Julien Ramseier <j.ramseier@gmail.com> | 2017-03-21 12:24:23 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2017-03-21 12:24:23 -0400 |
| commit | 9571c5314a8064eda8a56faa2ae2aeced34497a3 (patch) | |
| tree | 9120ec538b42accd4bf44c73c66f20943cd8ad81 | |
| parent | e6917eced2cc841fe3dfd9c04deec9202f9e34f3 (diff) | |
| download | musl-9571c5314a8064eda8a56faa2ae2aeced34497a3.tar.gz musl-9571c5314a8064eda8a56faa2ae2aeced34497a3.tar.bz2 musl-9571c5314a8064eda8a56faa2ae2aeced34497a3.tar.xz musl-9571c5314a8064eda8a56faa2ae2aeced34497a3.zip | |
regex: fix newline matching with negated brackets
With REG_NEWLINE, POSIX says:
"A <newline> in string shall not be matched by a period outside
a bracket expression or by any form of a non-matching list"
| -rw-r--r-- | src/regex/regcomp.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/regex/regcomp.c b/src/regex/regcomp.c index 5a7b53a7..fb24556e 100644 --- a/src/regex/regcomp.c +++ b/src/regex/regcomp.c @@ -636,6 +636,20 @@ static reg_errcode_t parse_bracket(tre_parse_ctx_t *ctx, const char *s) goto parse_bracket_done; if (neg.negate) { + /* + * With REG_NEWLINE, POSIX requires that newlines are not matched by + * any form of a non-matching list. + */ + if (ctx->cflags & REG_NEWLINE) { + lit = tre_new_lit(&ls); + if (!lit) { + err = REG_ESPACE; + goto parse_bracket_done; + } + lit->code_min = '\n'; + lit->code_max = '\n'; + lit->position = -1; + } /* Sort the array if we need to negate it. */ qsort(ls.a, ls.len, sizeof *ls.a, tre_compare_lit); /* extra lit for the last negated range */ |