Make regex::assign not clobber the regex in case of failure. Fixes PR#22213

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@225799 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-13 16:49:52 +00:00
parent fe079256b2
commit 083e011d6c
2 changed files with 10 additions and 3 deletions
--- a/test/std/re/re.regex/re.regex.assign/assign.pass.cpp
+++ b/test/std/re/re.regex/re.regex.assign/assign.pass.cpp
@@ -23,4 +23,13 @@ int main()
    r2.assign(r1);
    assert(r2.flags() == std::regex::ECMAScript);
    assert(r2.mark_count() == 2);
+    assert(std::regex_search("ab", r2));
+    
+    bool caught = false;
+    try { r2.assign("(def", std::regex::extended); }
+    catch(std::regex_error &) { caught = true; }
+    assert(caught);
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+    assert(std::regex_search("ab", r2));
 }