[PATCH v2 1/2] jscript: Handle star and opt operators while matching global regex properly.

[Charlotte Pabst]

From: Charlotte Pabst

Before this fix, the regex engine would run into an infinite loop and OOM when encountering a
quantifier allowing a zero amount of items in a REG_GLOB regex.
---
 dlls/jscript/jsregexp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/jscript/jsregexp.c b/dlls/jscript/jsregexp.c
index e3a707b1f6b..6bf1b21c3e7 100644
--- a/dlls/jscript/jsregexp.c
+++ b/dlls/jscript/jsregexp.c
@@ -208,6 +208,9 @@ static HRESULT regexp_match(script_ctx_t *ctx, jsdisp_t *dispex, jsstr_t *jsstr,
         ret[i].index = result->cp - str - result->match_len;
         ret[i++].length = result->match_len;

+        if (result->match_len == 0)
+       	    result->cp++;
+
         if(!gflag && !(This->jsregexp->flags & REG_GLOB)) {
             hres = S_OK;
             break;