Add patch to fix quickjs-ng/quickjs#286

Author: malbarbo

sys/build.rs

@@ -147,6 +147,7 @@ fn main() {
         "get_function_proto.patch",
         "check_stack_overflow.patch",
         "infinity_handling.patch",
+        "accept-slash-dash-inside-brackets-as-regex.patch",
     ];
 
     let version =

sys/patches/accept-slash-dash-inside-brackets-as-regex.patch

@@ -0,0 +1,28 @@
+diff --git a/libregexp.c b/libregexp.c
+index a2d56a7..bf8f540 100644
+--- a/libregexp.c
++++ b/libregexp.c
+@@ -676,6 +676,9 @@ static int get_class_atom(REParseState *s, CharRange *cr,
+                 c &= 0x1f;
+                 p++;
+             } else if (s->is_unicode) {
++                // special case: allowed inside [] but not outside
++                if (ret == -2 && *p == '-' && inclass)
++                    goto normal_char;
+                 goto invalid_escape;
+             } else {
+                 /* otherwise return '\' and 'c' */
+diff --git a/tests/test_builtin.js b/tests/test_builtin.js
+index 15cd189..8cdadc2 100644
+--- a/tests/test_builtin.js
++++ b/tests/test_builtin.js
+@@ -680,6 +680,9 @@ function test_regexp()
+     assert(a, ["123a23", "3"]);
+     a = /()*?a/.exec(",");
+     assert(a, null);
++
++    eval("/[\\-]/");
++    eval("/[\\-]/u");
+ }
+ 
+ function test_symbol()