search for: overflows

Hello, I've got samba 2.2.6 running on my internal network. I'm trying to connect to my home directory via a win2ksp3 client, and i'm getting the below error message in my satellite.log file which is the log file created when i tried to connect. Any suggestions appreciated. Thanks. Dave. ERROR: string overflow by 4 in string_sub(%u, 7) [2002/10/28 22:03:22, 0]

# Hi, # This plot has two colors. overflow <- read.csv('http://chainsaw.thomaslevine.com/overflow.csv', stringsAsFactors = F) png('original.png') stripchart(overflow$precipi ~ overflow$after.9.am, method='stack', pch = 22, bg = overflow$overflow + 1, vertical = T, col = 0) dev.off() # I wanted continuous bands of color, so I sorted the data frame. # But after

During the review of https://reviews.llvm.org/D59978 we got to the question whether we can optimize based on the assumption that stack overflow is undefined behavior. While I think it is according to the C++ standard, Windows Structured Exception Handling and signal handlers might allow programs to recover/exit gracefully. Concretely, the patch D59978 wants add the noreturn attribute to functions

...izations. For example, the compiler will assume that an expression like "i + 10 > i" will always be true for signed "i". This assumption is only valid if signed overflow is undefined, as the expression is false if "i + 10" overflows when using twos complement arithmetic. When this option is in effect any attempt to determine whether an operation on signed numbers will overflow must be written carefully to not actually involve overflow. See also the -fwrapv option. Using -fwrapv means...

libswfdec/swfdec_as_context.c | 2 +- libswfdec/swfdec_movie.c | 2 +- test/trace/Makefile.am | 15 +++++++++++++++ test/trace/crash-0.5.4-13491-stack-overflow-5.swf |binary test/trace/crash-0.5.4-13491-stack-overflow-5.swf.trace | 1 + test/trace/crash-0.5.4-13491-stack-overflow-6.swf

...rn >> { poison, true } instead of giving a useful result in the first element of the struct. > > Any argument against that? I guess that would be the most natural definition given the motivation to have these > intrinsics (e.g., check if the 'nmemb * size' operation of calloc overflows; if so return null). > > InstCombine will remove these instrinsics if the overflow bit is unused, for example. AFAICT, InstCombine never adds > nsw/nuw to the replacements. I didn't check GVN. But I think they should unless there's some reason not to. > > Nuno > __________...

Hi Michael, Please keep in mind non-C/C++ frontends. For example, in Rust, we promise to avoid all undefined behavior in safe code. There is no reasonable compositional analysis that can statically detect stack overflows (I know safety-critical systems are subjected such analyses, but those could not reasonably be enforced on all Rust code -- most of them just forbid recursion, for example), so we defer to a dynamic check instead: we have a guard page for every thread, and we make sure that for big stack frames bei...

Hello, I run samba 3.0.4 on a RHL9 server. Samba is a domain member of a W2k3 ADS and I use CUPS as printing mechanism; therefore Samba is compiled with Kerberos 1.3.1-7 and cups-devel. 3.0.4 runs pretty good, printing via CUPS runs well too, only the following messages I see constantly (this flooding my logs) while using 3.0.4: winbindd.log ========= [2004/07/27 16:07:04, 1]

Several instruction set architectures include arithmetic operations that can trap on overflow, or support this feature with a separate trap-on-overflow-flag instruction (such as the x86 INTO instruction). I am adding a back-end to the Open Dylan compiler to generate LLVM IR. The original back-end, which generates x86 machine code, makes use of the INTO instruction, and the runtime turns the

On Aug 22, 2008, at 9:30 AM, Vikram S. Adve wrote: > In the general case, I think you have to be conservative about this > because programmers may deliberately want this kind of "wraparound" > behavior, e.g., with periodic boundary conditions. But 99.9% of > programs probably don't need that so it would be bad to penalize them > for this corner case. In such a

In the latest 3.1 I get this in our backup: filename overflows max-path len by 1: <path> filename overflows max-path len by 1: <path> filename overflows max-path len by 9: <path> filename overflows max-path len by 7: <path> filename overflows max-path len by 4: <path> filename overflows max-path len by 5: <path> filename ove...

On Aug 9, 2010, at 10:44 AM, Peter S. Housel wrote: > Several instruction set architectures include arithmetic operations that can trap on overflow, or support this feature with a separate trap-on-overflow-flag instruction (such as the x86 INTO instruction). > > > I am adding a back-end to the Open Dylan compiler to generate LLVM IR. The original back-end, which generates x86

Hi, I've got a problem with a 2.2.2 samba server. It has, a number of times, recorded the following lines for a short period of time of 10 seconds, and then not again for days. Has anyone seen these before? It all appears to be random characters. It has only happened from 2 machines out of 30 or so. [2005/01/13 09:33:29, 0] lib/util_str.c:safe_strcpy(877) ERROR: string overflow by 363 in

Hi Pete, > Or do you mean that the result of an add may not even be defined? In that case would reading it be considered UB in the case where the overflow bit was set? Yeah, this is the case I'm worried about: that for example sadd.with.overflow(INT_MAX, 1) might be designed to return { poison, true } instead of giving a useful result in the first element of the struct. John

What is the cause for such a message while running kernel 2.6.1 on RH9 ? Neighbour table overflow. NET: 282 messages suppressed. Neighbour table overflow. Alex Iruc _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

We have code that processes a buffer in the forward or backwards direction. It looks similar to the following (https://github.com/weidai11/cryptopp/blob/master/adv-simd.h#L1138): uint8_t * ptr = ... size_t len = ... size_t inc = 16; if (flags & REVERSE_DIRECTION) { ptr += len - inc; inc = 0-inc; } while (len > 16) { // process blocks ptr += inc; len -= 16; } Clang

After chatting on IRC, Peter wants a very specific interrupt (int4 on x86). I suggested he add a new llvm.x86.int(i32) intrinsic, and use the existing branch on llvm.sadd.with.overflow intrinsic. The x86 backend can then turn jo+int4 into into when reasonable. -Chris On Aug 9, 2010, at 5:45 PM, Chris Lattner wrote: > > On Aug 9, 2010, at 10:44 AM, Peter S. Housel wrote: > >>

...xample, the compiler will > assume that an expression like "i + 10 > i" will always be > true for signed "i". This > assumption is only valid if signed overflow is undefined, > as the expression is false > if "i + 10" overflows when using twos complement > arithmetic. When this option is in > effect any attempt to determine whether an operation on > signed numbers will overflow > must be written carefully to not actually involve overflow. > > See also the -fwrapv option....

Do we have a .ll test cases for arithmetic overflow intrinsics that lli can execute and report any overflow occured? - sanjiv -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20110505/3a62c745/attachment.html>

Chris Lattner wrote: > On Feb 8, 2009, at 5:54 PM, Paul Schlie wrote: >> Are overflow behavior tags meant to enable the specification of a >> particular instruction's required or presumed overflow behavior? > > I'm not sure what you mean. The overflow tags specify what happens if > overflow happens (defined wrapping, defined saturating, or undefined > behavior),