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fix regex breakage in last commit (failure to handle empty regex, etc.)

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This commit is contained in:
Rich Felker
2012-05-07 17:43:38 -04:00
parent d7a90b35b9
commit a5a4778335
1 changed files with 1 additions and 4 deletions
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5
src/regex/regcomp.c
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@ -1149,10 +1149,6 @@ tre_parse(tre_parse_ctx_t *ctx)
an empty set of `()', a bracket expression, `.', `^', `$', an empty set of `()', a bracket expression, `.', `^', `$',
a `\' followed by a character, or a single character. */ a `\' followed by a character, or a single character. */
/* End of regexp? (empty string). */
if (!*ctx->re)
goto parse_literal;
switch (*ctx->re) switch (*ctx->re)
{ {
case CHAR_LPAREN: /* parenthesized subexpression */ case CHAR_LPAREN: /* parenthesized subexpression */
@ -1394,6 +1390,7 @@ tre_parse(tre_parse_ctx_t *ctx)
if (!(ctx->cflags & REG_EXTENDED)) if (!(ctx->cflags & REG_EXTENDED))
goto parse_literal; goto parse_literal;
case 0:
empty_atom: empty_atom:
result = tre_ast_new_literal(ctx->mem, EMPTY, -1, -1); result = tre_ast_new_literal(ctx->mem, EMPTY, -1, -1);
if (!result) if (!result)