Date: Sat, 6 Nov 2010 10:57:04 +0100 (CET) From: Barbara <barbara.xxx1975@libero.it> To: <freebsd-current@freebsd.org> Subject: libstc++ (?) problem on CURRENT? Message-ID: <19821003.923081289037424002.JavaMail.defaultUser@defaultHost>
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I had a problem running the IcedTea java plugin on CURRENT i386, while it works on 8_STABLE. But maybe it's not a problem related to the port. Just to be clear, I'm not looking for a solution about the port here, I'm just wondering why the same c++ code is working on 8_STABLE and it's segfaulting on CURRENT, considering also that AFAIK the gcc version in both the base systems is the same. In the part of the code causing the crash, a std::map is read with an iterator in a for loop, and if a condition is met, an entry is erased. The following is the bt I'm getting: #0 0x29e36247 in kill () from /lib/libc.so.7 #1 0x29e361a6 in raise () from /lib/libc.so.7 #2 0x282424f6 in XRE_LockProfileDirectory () from /usr/local/lib/firefox3/libxul.so #3 <signal handler called> #4 0x29c8f1b2 in std::_Rb_tree_increment () from /usr/lib/libstdc++.so.6 #5 0x2ef92402 in IcedTeaPluginUtilities::invalidateInstance () from /usr/local/openjdk6/jre/lib/IcedTeaPlugin.so ... I wrote a "patch" for the IcedTea plugin, replacing the for loop with a while and increasing the iterator before erasing from the map, and it seems working. Then I wrote a simple program that do something similar to IcedTea, so there is no need to build the whole java/openjdk6 port to do some testing. Running it on 8_STABLE it works, on CURRENT it crashes. You can find more details in this discussion on the freebsd-java ml: http://lists.freebsd.org/pipermail/freebsd-java/2010-November/008978.html You can find the patch and the sample code in the discussion above, anyway I'm reporting them here too: icedtea patch: http://pastebin.com/b2KKFNSG test case: http://pastebin.com/Amk4UJ0g I hope that the crash is not caused by a bad environment, can anyone else test it? Thanks Barbara
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