search for: overflow

...t 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] lib/util_str.c:string_sub(1219) ERROR: string overflow by 4 in string_sub(%u, 7) [2002/10/28 22:03:22, 0] lib/util_str.c:string_sub(1219) ERROR: string overflow by 4 in string_sub(%u, 7) [2002/10/28 22:03:22, 0] lib/util_str.c:string_sub(1219)...

# 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...

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 that recurse infinitly. Also, a function t...

On Aug 22, 2008, at 9:34 AM, Chris Lattner wrote: > C has a way to express this: signed integers are defined to never > overflow, unsigned integers are defined to wrap gracefully on > overflow. And gcc has yet more fun in it: -fstrict-overflow Allow the compiler to assume strict signed overflow rules, depending on the language being compiled. For C (and C++) this means that overflow...

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 |binary test/trace/crash-0.5.4-13491-stack-overflow-6.swf.trace | 1 + test/trace/crash-0.5.4-13491-stack-overflow-7.swf |binary test/trace/crash...

...nsform define void @test1(i64 %a, i64 %b, i64* %res_i64, i1* %res_i1) { entry: %add = add i64 %b, %a %cmp = icmp ult i64 %add, %a store i1 %cmp, i1* %res_i1 store i64 %add, i64* %res_i64 ret void } to define void @test1(i64 %a, i64 %b, i64* %res_i64, i1* %res_i1) { entry: %uadd.overflow = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %b, i64 %a) %uadd = extractvalue { i64, i1 } %uadd.overflow, 0 %overflow = extractvalue { i64, i1 } %uadd.overflow, 1 store i1 %overflow, i1* %res_i1 store i64 %uadd, i64* %res_i64 ret void } Now if we _know_ that the arithmetic r...

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 be...

..." messages are not gone in 3.0.6 - The biggest issue is however CUPS; while my smb.conf file wasn't changed (of course verified with testparm), but since the upgrade the log files are flooded with these messages: [2004/09/01 16:16:10, 0] lib/util_str.c:safe_strcpy_fn(600) ERROR: string overflow by 1 (32 - 31) in safe_strcpy [\\192.168.100.151\DUSSEL_LASER01] My XP clients (sp1), that get their printers installed via the ADS logon script (e.g. \\DUSSEL.XXX.COM\DUSSEL_LASER01 ) now get 2 printers installed: "DUSSEL_LASER01 on dussel" and "DUSSEL_LASER01 on 192.168.100.151&qu...

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 th...

...nalize them > for this corner case. In such a situation, I think you just have to > support both choices, but choose the default as sensibly as possible. > I discussed this with Matthieu and this is what we came up with: C has a way to express this: signed integers are defined to never overflow, unsigned integers are defined to wrap gracefully on overflow. Other languages that target this may want some sort of command line option to control the behavior or the language may define it one way or the other. We don't model this in LLVM IR, but this is a desired feature if anyone...

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 ov...

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 machine code, makes use of the INTO instruction, and the...

..., 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 safe_strcpy [^?AA<96>AAA^PèAAAAAAAAAAAAAAª]AAAAAA¡ÅAA#AAA5^AAAAAA^PèA] [2005/01/13 09:33:29, 0] lib/util_str.c:safe_strcpy(877) ERROR: string overflow by 165 in safe_strcpy [^]tAAA6A<82>^?GAnA<81>^]tA6A6A^NnLAnA^R^]tAAA6AðnLA¨AAA*6AA*6A] [2005/01/13 09:33:29, 0] lib/ut...

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/

...+= len - inc; inc = 0-inc; } while (len > 16) { // process blocks ptr += inc; len -= 16; } Clang 5.0 and UBsan is producing findings (https://travis-ci.org/noloader/cryptopp/jobs/317442299#L967): adv-simd.h:1138:26: runtime error: addition of unsigned offset to 0x000003f78cf0 overflowed to 0x000003f78ce0 adv-simd.h:1140:26: runtime error: addition of unsigned offset to 0x000003f78ce0 overflowed to 0x000003f78cd0 adv-simd.h:1142:26: runtime error: addition of unsigned offset to 0x000003f78cd0 overflowed to 0x000003f78cc0 ... Lines 1138, 1140, 1142 (and friends) are the increment...

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: > >> Several instruction set architectures include arithmetic operations that can trap on...

...to fully support all of these capabilities (if that is the right thing to do, which isn't clear). OTOH, it looks like a lot of real-world software that is using LLVM already doesn't seem to be affected by the lack of them. Does anyone know of any C/C++ programs that require integer overflow on signed arithmetic (even though it is not strictly allowed by the standard)? Also, does anyone know how -ftrapv is implemented on processors that don't have hardware detection of integer overflow? It sounds very expensive to do entirely in software. Thanks, --Vikram Associate Prof...

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 > beha...