similar to: Compiling program with dfsan at IR

Hi all, I was trying to compile dfsan with wget. (Just enabling the dfsan feature, without actually making changes to the source code) Without dfsan, I am able to compile and run wget 1.19.5 (available at https://ftp.gnu.org/gnu/wget/wget-1.19.5.tar.gz). But when compiled with dfsan, it encountered a null pointer dereference error. Following an old post:

On Tue, Oct 7, 2014 at 2:51 PM, Peter Collingbourne <peter at pcc.me.uk> wrote: > Looks good, thanks! > > Can you write the test case, please? You probably have more experience > writing debug info tests than I do. > Sure - though how would I get the pre-dfsan .ll file to produce this behavior? I've tried compiling to a .ll file without dfsan, then feeling that .ll

Hi! Thanks for providing great help in R-related statistics. Now, however I'm stuck. I'm not a statistics person but I was recommended to use R to perform a nmds plot and PerMANOVA of my dataset. Sample(treatment) in the columns and species (OTU) in the rows. I have 4 treatments (Ambient Temperature, Ambient temperature+Low pH, High temperature, High temperature+low pH), and I have 16

Here's a basic patch which would solve it in sort of the same way as the other optimizations I was fixing (just special case the debug info & fix it up). I can work up a test case for this as well, or you can, if you like/this seems reasonable. On Tue, Oct 7, 2014 at 2:30 PM, Peter Collingbourne <peter at pcc.me.uk> wrote: > On Tue, Oct 07, 2014 at 12:20:55PM -0700, David

Can anybody give me any pointer on how compiler-rt, especially the sanitizers work? Do they operate on IR as any other LLVM pass? Or are they integral part of the frontend itself? I couldn't spot any documentation on the internals of compiler-rt project? What happens (sequence of actions) when I pass -fsanitizer=dataflow to clang? Precisely, I intend to alter the behaviour of DFSan to suit my

On Tue, Oct 7, 2014 at 12:18 PM, David Blaikie <dblaikie at gmail.com> wrote: > > > On Tue, Oct 7, 2014 at 12:10 PM, David Blaikie <dblaikie at gmail.com> wrote: > >> >> >> On Tue, Oct 7, 2014 at 11:48 AM, Peter Collingbourne <peter at pcc.me.uk> >> wrote: >> >>> On Tue, Oct 07, 2014 at 10:04:30AM -0700, David Blaikie wrote:

Hi Peter, After discovering several bugs in ArgumentPromotion and DeadArgumentElimination where llvm::Functions were replaced with similar functions (with the same name) to transform their type in some way, I started looking at all calls to llvm::Function::takeName to see if there were any other debug info quality bugs in similar callers. One such caller is the DataFlowSanitizer, and I don't

On Tue, Oct 7, 2014 at 11:48 AM, Peter Collingbourne <peter at pcc.me.uk> wrote: > On Tue, Oct 07, 2014 at 10:04:30AM -0700, David Blaikie wrote: > > Hi Peter, > > > > After discovering several bugs in ArgumentPromotion and > > DeadArgumentElimination where llvm::Functions were replaced with similar > > functions (with the same name) to transform their type

Kostya, I took a quick stab at patching libFuzzer for Apple, but so far I'm thinking something else is incorrect. Patch is attached but when I went to reproduce the examples, the toy example went fine, but with PCRE and Heartbleed I noticed the coverage statistics were pretty poor, and didn't find anything. Admittedly I moved onto Heartbleed pretty quickly so PCRE probably isn't the

X32 support patch for compiler-rt. Applies against current trunk. --- projects/compiler-rt/make/platform/clang_linux.mk~ 2013-08-21 06:27:38.000000000 +0000 +++ projects/compiler-rt/make/platform/clang_linux.mk 2013-08-21 11:16:55.891621025 +0000 @@ -41,7 +41,18 @@ SupportedArches += x86_64 endif else - SupportedArches := x86_64 + # x86-64 arch has two ABIs 64 bit x86-64 and 32 bit

FWIW see also http://lists.cs.uiuc.edu/pipermail/cfe-dev/2015-June/043301.html As far as I understand DFSan functionality isn't required for libFuzzer to work, so it should be safe to disable DFSan support on Mac. On Wed, Jul 8, 2015 at 7:45 AM, Kostya Serebryany <kcc at google.com> wrote: > +pcc , glider > > On Mon, Jul 6, 2015 at 12:59 PM, Juan Ceasar <juan.d.ceasar at

Hi all, I have some questions about "DataFlowSanitizer" from "compiler-rt". I want to know how I can test the "DataFlowSanitizer"? Can I configure it to label only some values, i.e, the return values from specific functions? Also, how can I print these labels? Thanks, Dareen -------------- next part -------------- An HTML attachment was scrubbed... URL:

r247321 refactors the code so that it should build on Mac. I haven't actually tested it on Mac -- so please help me and send follow up patches if needed. check-fuzzer will still fail because some of the libFuzzer tests require dfsan. I'd use some help from someone with a Mac to modify lib/Fuzzer/test/CMakeLists.txt so that it does not run dfsan-dependent tests on Mac. Thanks, --kcc On

Hi everyone, (Sorry if I'm asking at the wrong mail listing, but compiler-rt page tells I'd better write on llvm-dev rather than cfe-dev/cfe-users.) I've just built LLVM/Clang+Compiler-rt (Compiler-rt is put inside llvm/projects folder) and tried the -fsanitize option. But strangely the link failed since it cannot find *libclang_rt.san-x86_64.a*. The error message is as

Dear Developers, I am a Master's student at the ECE department of the University of Florida, USA.​​ For my research project, supervised by Prof. Mark Tehranipoor<http://tehranipoor.ece.ufl.edu/> and Prof. Farimah Farahmandi<http://farimah.ece.ufl.edu/>, I need to use Clang LLVM DataflowSanitizer library in KLEE. However, I have faced some difficulties (explained below) while

While attempting to run DataFlowSanitizer for 32 bit target (-m32), I received the following error: unsupported option '-fsanitize=dataflow' for target 'i386-unknown-linux-gnu' Does it mean that DFSan doesn't support 32 bit memory model? -- Thanks & Regards, Dipanjan -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, I have sample data set that looks like: YEAR MONTH DAY CONTINUE SPL TIMEFISH TIMEUNIT AREA COUNTY DEPTH DEPUNIT GEAR TRIPID CONVUNIT 1992 1 26 1 SP0073928 8 H 7 25 4 NA 1000000 02163399054 161 1992 1 26 1 SP0073928 8 H 7 25 4 NA 1000000 02163399054 8 1992 1 26 2 SP0004228 8 H 7 25 4 NA 1000000 02163399054 161 1992 1 26 2 SP0004228 8 H 7 25 4 NA 1000000 02163399054 8 1992

sir, i am going to configure debian samba server i am getting problems. how can i configure samba as a pdc . plz. reply me back as soon as possible with complete steps. Thanking you. sumit kumar 09848097138 INDIA

This patch fixes the bug that "xm reboot <domid>" can not reboot vmx domain. In xm reboot process, control panel will wait until DomU notified it. Unlike DomU, vmx domain can not passively do that, since it runs unmodified OS. This patch adds the missing logic in control panel. Any comment? Signed-off-by: Xu Dan <dan.d.xu@intel.com > Yu Ke

Hi, I was looking at trying to get loop induction variable at IR level. LLVM documentation mentioned indvars pass and getCanonicalInductionVariable() to get them, I tried running the indvars pass and then a custom pass which iterates through loops and uses the function to obtain variable for a simple loop program. But the API returns null. I also read in similar posts that the indvars pass is not