1 files changed, 143 insertions, 0 deletions
diff --git a/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekoff.pass.cpp b/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekoff.pass.cpp
new file mode 100644
index 000000000000..6d20db13189a
--- /dev/null
+++ b/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekoff.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// pos_type seekoff(off_type off, ios_base::seekdir way,
+//                  ios_base::openmode which = ios_base::in | ios_base::out);
+
+#include <sstream>
+#include <cassert>
+
+int main()
+{
+    {
+        std::stringbuf sb("0123456789", std::ios_base::in);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
+        assert(sb.sgetc() == '6');
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
+        assert(sb.sgetc() == '7');
+    }
+    {
+        std::stringbuf sb("0123456789", std::ios_base::out);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3);
+        assert(sb.sputc('a') == 'a');
+        assert(sb.str() == "012a456789");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7);
+        assert(sb.sputc('b') == 'b');
+        assert(sb.str() == "012a456b89");
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7);
+        assert(sb.sputc('c') == 'c');
+        assert(sb.str() == "012a456c89");
+    }
+    {
+        std::stringbuf sb("0123456789");
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
+        assert(sb.sgetc() == '6');
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
+        assert(sb.sgetc() == '7');
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.sputc('a') == 'a');
+        assert(sb.str() == "012a456789");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == 7);
+        assert(sb.sgetc() == '7');
+        assert(sb.sputc('c') == 'c');
+        assert(sb.str() == "012a456c89");
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3);
+        assert(sb.sputc('3') == '3');
+        assert(sb.str() == "0123456c89");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7);
+        assert(sb.sputc('7') == '7');
+        assert(sb.str() == "0123456789");
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7);
+        assert(sb.sputc('c') == 'c');
+        assert(sb.str() == "0123456c89");
+    }
+    {
+        std::wstringbuf sb(L"0123456789", std::ios_base::in);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
+        assert(sb.sgetc() == L'6');
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
+        assert(sb.sgetc() == L'7');
+    }
+    {
+        std::wstringbuf sb(L"0123456789", std::ios_base::out);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3);
+        assert(sb.sputc(L'a') == L'a');
+        assert(sb.str() == L"012a456789");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7);
+        assert(sb.sputc(L'b') == L'b');
+        assert(sb.str() == L"012a456b89");
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7);
+        assert(sb.sputc(L'c') == L'c');
+        assert(sb.str() == L"012a456c89");
+    }
+    {
+        std::wstringbuf sb(L"0123456789");
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
+        assert(sb.sgetc() == L'6');
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
+        assert(sb.sgetc() == L'7');
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+        assert(sb.sputc(L'a') == L'a');
+        assert(sb.str() == L"012a456789");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == 7);
+        assert(sb.sgetc() == L'7');
+        assert(sb.sputc(L'c') == L'c');
+        assert(sb.str() == L"012a456c89");
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3);
+        assert(sb.sputc(L'3') == L'3');
+        assert(sb.str() == L"0123456c89");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7);
+        assert(sb.sputc(L'7') == L'7');
+        assert(sb.str() == L"0123456789");
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7);
+        assert(sb.sputc(L'c') == L'c');
+        assert(sb.str() == L"0123456c89");
+    }
+}