digitalmars.D.learn - [FreeBSD] 0x000000000061d8cd in rt.aaA.Impl.findSlotLookup(ulong,
- Mengu (159/159) Sep 23 2017 hello everyone
- Nicholas Wilson (12/31) Sep 23 2017 So it fails:
- Nicholas Wilson (4/6) Sep 23 2017 You might also try LDC's -fsanitize=address option for catching
- Mengu (7/20) Sep 23 2017 hi nicholas
hello everyone i have a small program that parses an xml file, holding a list with 13610 elements. after making the list, it iterates over the list (paralele), goes to a web site and grabs the related data for that element. it works perfect for the first 1K element in the list. after that i get a very annoying segmentation fault. no exceptions, nothing. it just dumps a core file. below is the full stack trace. (also available at https://pastebin.com/PT1R5D7S) i appreciate any help. my dmd info: DMD64 D Compiler v2.076.0-dirty Copyright (c) 1999-2017 by Digital Mars written by Walter Bright my os info: r321309: Fri Jul 21 02:08:28 UTC 2017 root releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64 (gdb) bt full const(void*), const(TypeInfo)) inout () No symbol table info available. No symbol table info available. std.regex.internal.ir.getMatcher(std.uni.InversionList!(std.uni.GcPo icy).InversionList) () No symbol table info available. std.regex.internal.parser.CodeGen.charsetToIr(std.uni.InversionList!(std.uni.GcPo icy).InversionList) () No symbol table info available. std.regex.internal.parser.Parser!(immutable(char)[], std.regex.internal.parser.CodeGen).Parser.parseEscape() () No symbol table info available. std.regex.internal.parser.Parser!(immutable(char)[], std.regex.internal.parser.CodeGen).Parser.parseAtom() () No symbol table info available. std.regex.internal.parser.Parser!(immutable(char)[], std.regex.internal.parser.CodeGen).Parser.parseRegex() () No symbol table info available. std.regex.internal.parser.Parser!(immutable(char)[], std.regex.internal.parser.CodeGen).Parser.this!(const(char)[]).thi (immutable(char)[], const(char)[]) () No symbol table info available. std.regex.regexImpl!(immutable(char)[]).regexImpl(immutable(char)[], const(char)[]) () No symbol table info available. std.functional.memoize!(std.regex.regexImpl!(immutable(char)[]).regexImp (immutable(char)[], const(char)[]), 8).memoize(immutable(char)[], const(char)[]) () No symbol table info available. std.regex.regex!(immutable(char)[]).regex(immutable(char)[][], const(char)[]) () No symbol table info available. std.regex.regex!(immutable(char)[]).regex(immutable(char)[], const(char)[]) () No symbol table info available. std.net.curl.HTTP.Impl.onReceiveHeader(void(const(char[]), const(char[])) delegate).__lambda2(const(char[])) () No symbol table info available. std.net.curl.Curl.onReceiveHeader(void(const(char[])) delegate).__lambda2(const(char[])) () No symbol table info available. std.net.curl.Curl._receiveHeaderCallback(const(char*), ulong, ulong, void*) () No symbol table info available. No symbol table info available. No symbol table info available. No symbol table info available. No symbol table info available. ---Type <return> to continue, or q <return> to quit--- /usr/local/lib/libcurl.so No symbol table info available. /usr/local/lib/libcurl.so No symbol table info available. std.net.curl.Curl.perform(std.typecons.Flag!("throwOnError").Flag) () No symbol table info available. std.net.curl.HTTP.perform(std.typecons.Flag!("throwOnError").Flag) () No symbol table info available. provider.SunHotels.getHotels(destination.Destination) (this=0x80097e000, destination=...) at source/provider.d:226 __closptr = 0x800980800 filePath = "/usr/home/search-master/search-api/ext/data/hotels/6593.xml" __dollar = 7 hotelsPath = "http://some-domain.com" data = {ptr = 0x80097f240} http = {p = {_refCounted = {_store = 0x805a14000}}} postData = "some=postData" __flag = 2 __EAX = 0x8002901170 __exception_object = 0x0 __EAX = 0x8002901170 __EDX = -851895465 __handler = 0 __exception_object = 0x801f12540 app.getDestinations().__foreachbody1(ref destination.Destination) (this=0x7fffffffe850, __applyArg0=...) at source/app.d:164 destination = {destinationId = 6593, destinationCode = "GRR", destinationCode_1 = 0x0, destinationCode_2 = 0x0, destinationCode_3 = 0x0, destinationCode_4 = 0x0, destinationName = "Cedar (MI)", countryId = 43, countryName = "USA", countryCode = "US", timeZone = "-05:00"} std.parallelism.ParallelForeach!(destination.Destination[]).ParallelF reach.opApply(scope int(ref destination.Destination) delegate).doIt() (this=0x7fffffffe7d0) at /home/search-master/dmd2/freebsd/bin64/../../src/phobos/std/parallelism.d-mixin-3824:3870 myUnitIndex = 5 start = 2130 end = 2556 __key3499 = 2306 __limit3500 = 2556 i = 2306 __EAX = 0x8002901170 __EDX = -851895465 __handler = 0 __exception_object = 0x802016500 delegate).run(void() delegate) () ---Type <return> to continue, or q <return> to quit--- No symbol table info available. std.parallelism.Task!(std.parallelism.run, void() delegate).Task.impl(void*) () No symbol table info available. No symbol table info available. std.parallelism.TaskPool.doJob(std.parallelism.AbstractTask*) () No symbol table info available. std.parallelism.TaskPool.executeWorkLoop() () No symbol table info available. std.parallelism.TaskPool.startWorkLoop() () No symbol table info available. No symbol table info available. No symbol table info available. No symbol table info available. No symbol table info available. Backtrace stopped: Cannot access memory at address 0x7fffdfffe000
Sep 23 2017
On Saturday, 23 September 2017 at 08:45:00 UTC, Mengu wrote:hello everyone i have a small program that parses an xml file, holding a list with 13610 elements. after making the list, it iterates over the list (paralele), goes to a web site and grabs the related data for that element. it works perfect for the first 1K element in the list. after that i get a very annoying segmentation fault. no exceptions, nothing. it just dumps a core file. below is the full stack trace. (also available at https://pastebin.com/PT1R5D7S) i appreciate any help. my dmd info: DMD64 D Compiler v2.076.0-dirty Copyright (c) 1999-2017 by Digital Mars written by Walter Bright my os info: r321309: Fri Jul 21 02:08:28 UTC 2017 root releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64 (gdb) bt full [...]So it fails: trying to find if an element exists in an AA in a regex invoked as a callback from curl inside a parallel foreach. Interesting that it just straight up core dumps, usually you'll get an exception. see https://forum.dlang.org/thread/rrpmgzqqtkqgeicjdgps forum.dlang.org for a recent discussion. What it the stack limit? 35 frames is a fair bit, could be a stack overflow. What is the return code? this will probably give you some info as to what happened. Only other thing I can suggest is try linking against a debug phobos to see if you can get some more diagnostics.
Sep 23 2017
Nicholas Wilson <iamthewilsonator hotmail.com> On Saturday, 23 September 2017 at 11:23:26 UTC, Nicholas Wilson wrote:Only other thing I can suggest is try linking against a debug phobos to see if you can get some more diagnostics.You might also try LDC's -fsanitize=address option for catching memory bugs.
Sep 23 2017
On Saturday, 23 September 2017 at 11:23:26 UTC, Nicholas Wilson wrote:On Saturday, 23 September 2017 at 08:45:00 UTC, Mengu wrote:hi nicholas the latter is what i did. i re-compiled phobos master and used it. this time everything worked as expected. btw, regex match happens in HTTP.Impl.onReceiveHeader. i think it no longer had access to that header to parse.[...]So it fails: trying to find if an element exists in an AA in a regex invoked as a callback from curl inside a parallel foreach. Interesting that it just straight up core dumps, usually you'll get an exception. see https://forum.dlang.org/thread/rrpmgzqqtkqgeicjdgps forum.dlang.org for a recent discussion. What it the stack limit? 35 frames is a fair bit, could be a stack overflow. What is the return code? this will probably give you some info as to what happened. Only other thing I can suggest is try linking against a debug phobos to see if you can get some more diagnostics.
Sep 23 2017