Boost C++ Libraries: Ticket #7379: Boost Format strings causing memory leaks

Fri, 19 Oct 2012 10:37:28 GMT

It looks like bad format string. Try to remove leading "1" (L"%$.1f").

Steven Watanabe — Fri, 19 Oct 2012 14:47:26 GMT

No, the format string is correct. The "%N$" syntax means to read the Nth argument instead of processing the arguments sequentially.

owner, status changed

James E. King, III — Thu, 12 Oct 2017 15:17:42 GMT

owner changed from Samuel Krempp to James E. King, III
status new → assigned

I am unable to reproduce this issue using valgrind by adding the following test to format_test_wstring.cpp:

diff --git a/test/format_test_wstring.cpp b/test/format_test_wstring.cpp
index c30f740..4f9a871 100644
--- a/test/format_test_wstring.cpp
+++ b/test/format_test_wstring.cpp
@@ -29,8 +29,16 @@ int test_main(int, char* [])
       BOOST_ERROR("Basic w-parsing Failed");
   if(str( wformat(L"%%##%#x ##%%1 %s00") % 20 % L"Escaped OK" ) != L"%##0x14 ##%1 Escaped OK00")
       BOOST_ERROR("Basic wp-parsing Failed") ;
-#endif // wformat tests
+  // testcase for https://svn.boost.org/trac10/ticket/7379 (for valgrind)
+  wformat wfmt(L"%1$.1f");
+  std::wstring ws = str(wfmt % 123.45f);
+  BOOST_CHECK_EQUAL(ws.compare(L"123.4"), 0);
+  wformat wfmt2(L"%1$.0f %%");
+  std::wstring ws2 = (wfmt2 % 123.45f).str();
+  BOOST_CHECK_EQUAL(ws2.compare(L"123 %"), 0);
+
+#endif // wformat tests
   return 0;
 }

The method in which memory leak detection was determined is missing from the original bug report.After building debug and then running valgrind on it, there were no leaks. As such I am resolving this as "worksforme".

status, milestone changed; resolution set

James E. King, III — Thu, 12 Oct 2017 15:18:16 GMT

status assigned → closed
resolution → invalid
milestone To Be Determined → Boost 1.66.0

status changed; resolution deleted

James E. King, III — Thu, 12 Oct 2017 15:18:36 GMT

status closed → reopened
resolution invalid

status changed; resolution set

James E. King, III — Thu, 12 Oct 2017 15:18:46 GMT

status reopened → closed
resolution → worksforme