Qt Mips Bus Error
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Bus Error C++
hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges bus error linux Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. bus error vs segmentation fault Join them; it only takes a minute: Sign up What is a bus error? up vote 156 down vote favorite 49 What does the "bus error" message mean, and how does it differ from a segfault? c unix
How To Fix Bus Error In Linux
segmentation-fault bus-error share|improve this question edited Oct 18 '15 at 10:44 Cool Guy 15.7k51952 asked Oct 17 '08 at 14:48 raldi 7,272216178 add a comment| 15 Answers 15 active oldest votes up vote 152 down vote accepted Bus errors are rare nowadays on x86 and occur when your processor cannot even attempt the memory access requested, typically: using a processor instruction with an address that does not satisfy its alignment requirements. Segmentation faults occur when accessing memory which
How To Debug Bus Error
does not belong to your process, they are very common and are typically the result of: using a pointer to something that was deallocated. using an uninitialized hence bogus pointer. using a null pointer. overflowing a buffer. PS: To be more precise this is not manipulating the pointer itself that will cause issues, it's accessing the memory it points to (dereferencing). share|improve this answer edited Oct 17 '08 at 15:18 answered Oct 17 '08 at 15:12 bltxd 5,75322336 52 They aren't rare; I'm just at Exercise 9 from How to Learn C the Hard Way and already encountered one... –11684 Mar 26 '13 at 20:12 6 Another cause of bus errors (on Linux anyway) is when the operating system can't back a virtual page with physical memory (e.g. low-memory conditions or out of huge pages when using huge page memory.) Typically mmap (and malloc) just reserve the virtual address space, and the kernel assigns the physical memory on demand (so called soft page faults.) Make a large enough malloc, and then write to enough of it and you'll get a bus error. –Eloff Jul 14 '15 at 0:09 add a comment| up vote 58 down vote A segfault is accessing memory that you're not allowed to access. It's read-only, you don't have permission, etc... A bus error is trying to access memory that can't possibly be there. You've used
platformAgile Board ExportXMLWordPrintable Details Type: Bug Status: Closed Priority: P2: Important Resolution: Invalid Affects Version/s: 4.7.1 Fix Version/s: 5.0.0 Component/s: QML Engine Labels: None Environment: Linux kernel version 2.6.32.26; gcc version 4.3.3 ;little endian bus error (core dumped) linux ;cpu (MIPS 34kc) Description In src/script/bridge/qscriptdeclarativeclass_p.h 75 line "dummy[8]" will cause qml "bus
Bus Error Python
error",When I modify it to "char dummy[8] _attribute_ ((aligned(8)))",it can work normally. First I use Qt in soft-float environment,so it performance bus error core dumped c good. If I change environment to hard-float,it would "bus error",when I run qml; I trace this problem ,i find error occur in "JSValue.h" .But it is called in "QScriptDeclarative::Value::Value(QScriptEngine *eng,float value)".So I think it's http://stackoverflow.com/questions/212466/what-is-a-bus-error a problem of align. I think in embed environment ,it need 8 byte align for use double type. OptionsIssue OnlyShow All ReviewsShow Open ReviewsShow All IssuesShow Open IssuesGerrit Reviews No reviews matched the request. Check your Options in the drop-down menu of this sections header. Activity Ascending order - Click to sort in descending order All Comments Work Log History Activity Transitions ocean_y created issue - 10/Feb/11 8:49 https://bugreports.qt.io/browse/QTBUG-17355?page=com.atlassian.jira.plugin.system.issuetabpanels:changehistory-tabpanel AM ocean_y made changes - 10/Feb/11 9:02 AM Field Original Value New Value Status Reported [ 10011 ] Reported [ 10011 ] Description In src/script/bridge/qscriptdeclarativeclass_p.h 75 line "dummy[8]" will cause qml "bus error",When I modify it to "char dummy[8] __attribute__ ((aligned(8)))",it can work. First I use Qt in soft-float environment,so it performance good. If I change environment to hard-float,it would "bus error",when I run qml; I think in embed environment ,it need 8 byte align. In src/script/bridge/qscriptdeclarativeclass_p.h 75 line "dummy[8]" will cause qml "bus error",When I modify it to "char dummy[8] __attribute__ ((aligned(8)))",it can work. First I use Qt in soft-float environment,so it performance good. If I change environment to hard-float,it would "bus error",when I run qml; I trace this problem ,i find it occur in "JSValue.h" .But data is send by the "QScriptDelarative::Value::Value". I think in embed environment ,it need 8 byte align. ocean_y made changes - 10/Feb/11 9:08 AM Status Reported [ 10011 ] Reported [ 10011 ] Description In src/script/bridge/qscriptdeclarativeclass_p.h 75 line "dummy[8]" will cause qml "bus error",When I modify it to "char dummy[8] __attribute__ ((aligned(8)))",it can work. First I use Qt in soft-float environment,so it performance good. If I change environment to hard-float,it would "bus error",when I r
Sign in Pricing Blog Support Search GitHub This repository Watch 1,237 Star 10,225 Fork 6,769 bitcoin/bitcoin Code Issues 396 Pull requests 122 Projects 6 Pulse Graphs New issue bitcoind https://github.com/bitcoin/bitcoin/issues/6091 bus error on MIPS ci20 running debian #6091 Closed auryn-macmillan opened this Issue May 1, 2015 · 5 comments Projects None yet Labels Bug Milestone No milestone Assignees No one http://lists.busybox.net/pipermail/buildroot/2014-June/099109.html assigned 3 participants auryn-macmillan commented May 1, 2015 Trying to set up a full node using a MIPS ci20 running debian. Compiled and installed with no isses, however I'm getting a "Bus error" bus error when trying to run bitcoind or bitcoin-qt. Any help would be greatly appreciated. Below is debug.log. 2015-05-01 05:18:38 Bitcoin version v0.10.99.0-9c25397 (2015-04-29 19:08:33 +0200) 2015-05-01 05:18:38 Using OpenSSL version OpenSSL 1.0.1e 11 Feb 2013 2015-05-01 05:18:38 Using BerkeleyDB version Berkeley DB 4.8.30: (April 9, 2010) 2015-05-01 05:18:38 Default data directory /home/ci20/.bitcoin 2015-05-01 05:18:38 Using data directory /home/ci20/.bitcoin 2015-05-01 05:18:38 Using config file /home/ci20/.bitcoin/bitcoin.conf 2015-05-01 05:18:38 qt mips bus Using at most 125 connections (1024 file descriptors available) 2015-05-01 05:18:38 Using 2 threads for script verification 2015-05-01 05:18:38 Binding RPC on address ::1 port 8332 (IPv4+IPv6 bind any: 0) 2015-05-01 05:18:38 Binding RPC on address 127.0.0.1 port 8332 (IPv4+IPv6 bind any: 0) 2015-05-01 05:18:38 Using wallet wallet.dat 2015-05-01 05:18:38 init message: Verifying wallet... 2015-05-01 05:18:38 CDBEnv::Open: LogDir=/home/ci20/.bitcoin/database ErrorFile=/home/ci20/.bitcoin/db.log 2015-05-01 05:18:38 Bound to [::]:8333 2015-05-01 05:18:38 Bound to 0.0.0.0:8333 2015-05-01 05:18:38 init message: Loading block index... 2015-05-01 05:18:38 Opening LevelDB in /home/ci20/.bitcoin/blocks/index auryn-macmillan commented May 1, 2015 output from memtester indicates the memory is ok. All loops reported the same. Loop 10/10: Stuck Address : ok Random Value : ok Compare XOR : ok Compare SUB : ok Compare MUL : ok Compare DIV : ok Compare OR : ok Compare AND : ok Sequential Increment: ok Solid Bits : ok Block Sequential : ok Checkerboard : ok Bit Spread : ok Bit Flip : ok Walking Ones : ok Walking Zeroes : ok 8-bit Writes : ok 16-bit Writes : ok auryn-macmillan commented May 1, 2015 output from gdb: ci20@ci20-3168:~/.bitcoin$ gdb bitcoind GNU gdb (GDB) 7.4.1-debian Copyright (C) 2012 Free Software Foundation, Inc. Licens
date ] [ thread ] [ subject ] [ author ] Hi again. Just a quick update on this. I tried a lot of flags/configurations and none worked. Unfortunately I haven't been able to obtain a proper core file to debug what's really going on with ICU. I tried to build versions 52.1 and 53.1 and got the same bus error result. So I went back in the past and tried version 4.8.1.1 (taken from Buildroot 2013-08) ... and it works ! I might try versions 49 and 50, at least to identify the version that started to cause the issue I'm having. For now, since ICU is not vital for what I have to do (QtWebKit), I'm happy I've found one version working. Regards, Massimo >________________________________ > Da: Thomas Petazzoni