similar to: [LLVMdev] Building LLVM as a shared library on MinGw (Makefiles)

The shared library works fine here. I only made one modification to the 'tools/llvm-shlib/Makefile', because otherwise, two shared libraries would be created. I've commented out the line 'SHARED_ALIAS := 1' from the Makefile. Here is the command line i used to build LLVM/Clang: ../../configure --build=i686-w64-mingw32 --disable-assertions --enable-keep-symbols

2014-08-01 16:51 GMT-03:00 Keno Fischer <kfischer at college.harvard.edu>: > Hmm, that's intersting. I guess the difference might be that you're > targetting 32bit and I'm targetting 64bit. Does it still work if you > replace > "s/^.* T _\([^.][^.]*\)$$/\1/p" > by > "s/^.* T \([^.][^.]*\)$$/\1/p" > in > tools/llvm-shlib (and similarly

Yes, it would be great to get that fixed. On Wed, Feb 5, 2014 at 4:09 PM, Evgeniy Stepanov <eugeni.stepanov at gmail.com>wrote: > On Thu, Feb 6, 2014 at 12:21 AM, Keno Fischer > <kfischer at college.harvard.edu> wrote: > > Looks like when you materialize the stores, you should check the size of > the > > the store and emit an appropriate amount of stores to the

Looks like when you materialize the stores, you should check the size of the the store and emit an appropriate amount of stores to the origin shadow (or just a memset intrinsic?). On Wed, Feb 5, 2014 at 2:13 PM, Keno Fischer <kfischer at college.harvard.edu>wrote: > The @entry stuff is just a gdb artifact. I've been tracking this back a > little further, and it seems there's

How is ccall() implemented? If it manually sets up a stack frame, then it also needs to store argument shadow values in paramtls. I don't think there is an overflow, unless you have a _lot_ of arguments in a function call. On Sun, Feb 2, 2014 at 9:26 AM, Keno Fischer <kfischer at college.harvard.edu> wrote: > Also, I was looking at the instrumented LLVM code and I noticed that the

Ok. That you for clarifying the point for me. I was primed for a regression because this behavior changed over llvm versions and was causing my tests to fail ;). I'm now doing bitcasting to int, xoring with the signbit and bitcasting back. On Thu, Aug 7, 2014 at 2:59 AM, Owen Anderson <resistor at mac.com> wrote: > Subtraction is also not a correct implementation of negation, for

The code for ccall looks right. Sounds like you have a very small range of instructions where an uninitialized value appear. You could try debugging at asm level. Shadow for b should be passed at offset 0 in __msan_param_tls. MSan could propagate shadow through arithmetic and even some logic operations (like select). It could be that b is clean on function entry, but then something uninitialized

Ok, I had forgotten about sNaNs. Doesn't the same caveat apply to 0-sNaN then though or does that not signal? Does that mean we need a separate way to handle negate in the IR? Funnily enough, historically I believe we were using the multiplication by -1.0 because it was a more reliable negation that 0-x (from 3.0 until 3.3 at least). Is there a good reason why multiplication by NaN should kill

Oh, I see. Sorry I misunderstood. I'll try to come up with some minimal IR. The assertion stems from the fact that getCompileUnitDIE() returns null and then crashes at DWARFUnit.cpp:301. I admit I don't know if this problem is on the parsing or the generation side. While I come up with the IR, basically what I was doing was using a DebugLoc with scope being a DIFile rather than a

Hi Dale, I don't think that Keno's rewrite is applicable for a bug fix release. We have, in the last year, moved to having some dot releases for our older releases, but these are definitely bug fix only and low risk as we don't want to break anything new. The release documentation is located here: http://llvm.org/docs/HowToReleaseLLVM.html for future reference. There's no

Thanks! I'll try that. In order to avoid starting a new thread, let me ask you the next question. One of the shared libraries I load calls strtol and msan fails to intercept it. Why would this be? The library seems to be otherwise implemented. One of the potential culprits I saw is that strtol is marked as strong in libc. Is there any workaround? Keno On Thu, Apr 9, 2015 at 3:00 PM, Evgeniy

I have verified that both TLS implementations indeed find the same area of memory. Anything else I could look for? On Tue, Jan 28, 2014 at 4:28 PM, Keno Fischer <kfischer at college.harvard.edu>wrote: > Yes, both JIT code and the native runtime are instrumented. I am under the > impressions that the the C library should guarantee that from the way the > relocations are

Actually it only link the shlib fine. Linking any executable against it fails: llvm[2]: Linking Release+Asserts executable llvm-lto (without symbols) /home/kfischer/julia/deps/llvm-svn/build_Release+Asserts/Release+Asserts/bin/clang++ -fsanitize=address -O3 -Wl,-R -Wl,'$ORIGIN/../lib' -L/home/kfischer/julia/deps/llvm-svn/build_Release+Asserts+Sanitize/Release+Asserts/lib

On Fri, May 22, 2015 at 4:14 PM, Keno Fischer <kfischer at college.harvard.edu> wrote: > This might be related to GOT relocations. I rewrote that part of > RuntimeDyldELFbecause I was seeing this issue. Have you tried trunk? > I didn't notice that you were running 3.5 the first time I read this. Keno's diagnosis is very likely to be correct. You should try trunk if

Indeed, removing that flag works fine, the only question is why this is added in tools/llvm-shlib/Makefile in the first place then and what to do about it: ifeq ($(HOST_OS), $(filter $(HOST_OS), Linux GNU GNU/kFreeBSD)) # Don't allow unresolved symbols. LLVMLibsOptions += -Wl,--no-undefined endif On Thu, Nov 21, 2013 at 11:53 AM, Alexander Potapenko <glider at

On Thu, Nov 21, 2013 at 6:18 AM, Keno Fischer <kfischer at csail.mit.edu> wrote: > Hello everybody, > > after moving from OS X to Linux build llvm with asan enabled Sorry, I failed to parse this. You're compiling Clang on Linux, and OSX is unrelated, right? > (I also updated > to trunk, but not sure if that's related). However, it's totally possible > that I

Sorry, I didn't have a small IR example and I was sure I was just doing something stupid. Thanks for the help, I'll try it out and report back. Maybe it would be good to add an assertion or something that tells people what's wrong in this case, since the generated DWARF seems to be invalid? On Wed, Aug 13, 2014 at 5:53 PM, David Blaikie <dblaikie at gmail.com> wrote: > Use

We don't currently apply any relocations (that I know of) for debug info in LLDB. > On Jun 2, 2014, at 12:35 PM, Keno Fischer <kfischer at college.harvard.edu> wrote: > > I think I'm getting closer. The debug_info section is being relocated correctly (I think): > > 0x00000000: Compile Unit: length = 0x00000045 version = 0x0003 abbr_offset = 0x00000000 addr_size =

Hello everybody, after moving from OS X to Linux build llvm with asan enabled (I also updated to trunk, but not sure if that's related). However, it's totally possible that I missed a step that I took back when I set this up for me, so I might be doing something very stupid. Anyway, I'm configuring LLVM with ../configure --prefix=/home/kfischer/julia/usr --build=x86_64-pc-linux-gnu

What I meant to say was that it worked for me on OS X on a slightly older version of LLVM. Anyway, here's the ld line: "/usr/bin/ld" -export-dynamic -z relro --hash-style=gnu --build-id --eh-frame-hdr -m elf_x86_64 -shared -o /home/kfischer/julia/deps/llvm-svn/build_Release+Asserts+Sanitize/Release+Asserts/lib/