Encountering the dreaded “Deadly impressive eleven (SIGSEGV) astatine 0x636f7d89 (codification=1)” clang successful your Android app tin beryllium a irritating education. This cryptic mistake communication basically signifies a segmentation responsibility, that means your exertion tried to entree representation it shouldn’t person. Monitoring behind the base origin tin awareness similar looking out for a needle successful a haystack, however with a systematic attack and the correct instruments, you tin pinpoint the perpetrator and hole the content. This station volition usher you done the procedure of debugging and resolving this communal Android clang.
Knowing Segmentation Faults (SIGSEGV)
A segmentation responsibility happens once a programme tries to publication oregon compose to a representation determination that it doesn’t person approval to entree. Successful Android improvement, this frequently stems from points with pointers, array indices, oregon representation direction. The hexadecimal code (0x636f7d89 successful our illustration) represents the circumstantial representation determination wherever the amerciable entree occurred, though this code tin change. Knowing the quality of SIGSEGV is the archetypal measure in direction of effectual debugging.
Communal causes see accessing a null pointer, utilizing a dangling pointer (pointing to representation that has been freed), penning past the bounds of an array, oregon stack overflow. These errors tin beryllium peculiarly hard to path behind arsenic they whitethorn not ever manifest instantly.
Utilizing Debugging Instruments for Investigation
Android Workplace offers almighty debugging instruments that are indispensable for figuring out the origin of SIGSEGV errors. The debugger permits you to measure done your codification formation by formation, examine adaptable values, and fit breakpoints to intermission execution astatine circumstantial factors. By strategically putting breakpoints and analyzing the government of your exertion, you tin frequently pinpoint the direct formation of codification inflicting the clang.
Different invaluable implement is the Android Debug Span (ADB). ADB gives a bid-formation interface to work together with your instrumentality oregon emulator. You tin usage ADB to seizure logs, analyze the instrumentality’s representation government, and equal unit circumstantial crashes for investigating functions. Studying to make the most of ADB efficaciously tin importantly better your debugging workflow.
See utilizing Code Sanitizer (ASan), a almighty representation mistake detector that tin drawback points similar buffer overflows and usage-last-escaped errors. Integrating ASan into your physique procedure tin aid place representation-associated bugs aboriginal successful the improvement rhythm.
Analyzing Autochthonal Libraries (NDK)
If your exertion makes use of autochthonal libraries done the Autochthonal Improvement Equipment (NDK), the SIGSEGV mistake mightiness originate from inside the autochthonal codification. Debugging autochthonal codification requires a somewhat antithetic attack, frequently involving instruments similar GDB oregon LLDB. These debuggers let you to examine the government of your C/C++ codification and place representation corruption points inside the autochthonal libraries.
Wage adjacent attraction to representation direction inside your autochthonal codification. Guarantee appropriate allocation and deallocation of representation, and beryllium cautious of possible buffer overflows oregon dangling pointers. Utilizing instruments similar Valgrind tin besides aid observe representation leaks and another representation-associated points inside your autochthonal libraries.
Communal Eventualities and Options
Respective communal situations tin pb to SIGSEGV errors successful Android apps. Accessing an array component retired of bounds, dereferencing a null pointer, and utilizing a dangling pointer are amongst the about predominant culprits. Fto’s research any examples and possible options.
- Null Pointer Dereference: Guarantee pointers are decently initialized earlier accessing them.
- Array Scale Retired of Bounds: Treble-cheque loop situations and array entree logic.
- Dangling Pointers: Guarantee representation is not being freed piece inactive being accessed.
For illustration, if your app crashes once accessing an component successful an array, analyze the loop circumstances and guarantee the scale adaptable stays inside the legitimate bounds of the array. Likewise, if the clang happens once utilizing a pointer, confirm that the pointer is not null earlier dereferencing it.
- Usage debugging instruments similar Android Workplace debugger and ADB.
- Instrumentality antiaircraft programming practices, specified arsenic null checks and bounds checking.
“Thorough investigating and proactive debugging are important for minimizing the contact of SIGSEGV errors connected your customers.” - Android Debugging Adept
Infographic Placeholder: Ocular cooperation of SIGSEGV debugging procedure.
- Employment static investigation instruments to drawback possible errors aboriginal successful the improvement procedure.
- See utilizing Code Sanitizer (ASan) for sturdy representation mistake detection.
Monitoring behind and resolving SIGSEGV errors requires endurance and a methodical attack. By leveraging the disposable debugging instruments, knowing communal mistake situations, and implementing sturdy mistake dealing with, you tin importantly better the stableness and reliability of your Android functions. Larn much astir precocious debugging strategies. Retrieve to trial your exertion totally last implementing fixes to guarantee the content is full resolved. See utilizing on-line boards similar Stack Overflow and authoritative Android documentation for additional aid. Cheque retired sources connected representation direction successful Android present and NDK debugging ideas. Research Code Sanitizer documentation for integrating it into your physique.
By systematically investigating the clang, leveraging debugging instruments, and making use of the insights shared present, you’ll beryllium fine-outfitted to sort out these challenges and make much strong Android functions. Dive deeper into representation direction champion practices and research precocious debugging strategies to additional heighten your expertise. This proactive attack volition not lone lick contiguous points however besides forestall early occurrences, contributing to a smoother person education.
FAQ
Q: What does “Deadly impressive eleven (SIGSEGV)” average?
A: It signifies a segmentation responsibility, which means your app tried to entree representation it shouldn’t person.
Question & Answer :
I’ve been speechmaking the another posts connected monitoring behind the causes for getting a SIGSEGV successful an Android app. I program to scour my app for imaginable NullPointers associated to Canvas usage, however my SIGSEGV barfs ahead a antithetic representation code all clip. Positive I’ve seen codification=1 and codification=2. If the representation code was 0x00000000, I’d person a hint it is a NullPointer.
The past 1 I obtained was a codification=2:
A/libc(4969): Deadly impressive eleven (SIGSEGV) astatine 0x42a637d9 (codification=2)
Immoderate solutions connected however to path this behind?
I person a fishy, however I’m not eager connected experimenting with it but. My app makes use of the OSMDroid API for offline mapping. The OverlayItem people represents markers/nodes connected the representation. I person a Work that collects information by way of the web to populate the OverlayItem which are past displayed connected the representation. Successful an attempt to simplify my plan, I prolonged OverlayItem into my ain NodeOverlayItem people, which contains any summation attributes I usage successful the UI Act and successful the Work. This gave maine a azygous component of Point accusation for the UI and Work. I utilized Intents to broadcast to the Act to refresh the UI representation once thing modified. The Act binds to the Work and location’s a Work methodology to acquire the database of NodeOverlayItem’s. I deliberation it mightiness beryllium the OSMDroid API’s usage of OverlayItem, and my Work updating node accusation astatine the aforesaid clip. (a concurrency content)
Arsenic I compose this I deliberation that’s truly the job. The headache isn’t splitting retired the Node and OverlayItem from NodeOverlayItem, it’s that the Act volition demand any information from the Node, that the Work holds. Positive once the Act is created (onResume, and so forth…) the OverlayItem objects volition demand to beryllium re-created from the Node information that the Work has been sustaining piece the Act was distant. e.g. You commencement the app, the Work collects information, the UI shows it, you spell to Location, past backmost to the app, the Act volition demand to propulsion and re-make the OverlayItem’s from the newest Work node information.
I cognize this isn’t a large oregon broad questions. It’s similar each my Truthful questions are area of interest oregon obscure. If anybody has a proposition connected however to construe these SIGSEGV errors, it would beryllium vastly appreciated!
Replace Present’s the newest clang captured throughout a debug conference. I person three of these units being utilized for investigating and they don’t each clang reliably once I’m processing and investigating. I included a spot other conscionable truthful the GC logging may beryllium famous. You tin seat the job is most likely not associated to representation exhaustion.
03-03 02:02:38.328: I/CommService(7477): Acquired packet from: 192.168.1.102 03-03 02:02:38.328: I/CommService(7477): Already processed this packet. It's a re-broadcast from different node, oregon from myself. It's not a repetition broadcast although. 03-03 02:02:38.406: D/CommService(7477): Checking OLSRd information... 03-03 02:02:38.460: D/CommService(7477): Monitoring nodes... 03-03 02:02:38.515: D/dalvikvm(7477): GC_CONCURRENT freed 2050K, sixteen% escaped 17151K/20359K, paused 3ms+6ms 03-03 02:02:38.515: I/CommService(7477): Acquired packet from: 192.168.1.102 03-03 02:02:38.515: D/CommService(7477): Forwarding packet (4f68802cf10684a83ac4936ebb3c934d) on to another nodes. 03-03 02:02:38.609: I/CommService(7477): Obtained packet from: 192.168.1.one hundred 03-03 02:02:38.609: D/CommService(7477): Forwarding packet (e4bc81e91ec92d06f83e03068f52ab4) on to another nodes. 03-03 02:02:38.609: D/CommService(7477): Already processed this packet: 4204a5b27745ffe5e4f8458e227044bf 03-03 02:02:38.609: A/libc(7477): Deadly impressive eleven (SIGSEGV) astatine 0x68f52abc (codification=1) 03-03 02:02:38.914: I/DEBUG(4008): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 03-03 02:02:38.914: I/DEBUG(4008): Physique fingerprint: 'Lenovo/IdeaTab_A1107/A1107:four.zero.four/MR1/eng.person.20120719.150703:person/merchandise-keys' 03-03 02:02:38.914: I/DEBUG(4008): pid: 7477, tid: 7712 >>> com.trial.testm <<< 03-03 02:02:38.914: I/DEBUG(4008): impressive eleven (SIGSEGV), codification 1 (SEGV_MAPERR), responsibility addr 68f52abc 03-03 02:02:38.914: I/DEBUG(4008): r0 68f52ab4 r1 412ef268 r2 4d9c3bf4 r3 412ef268 03-03 02:02:38.914: I/DEBUG(4008): r4 001ad8f8 r5 4d9c3bf4 r6 412ef268 r7 4c479df8 03-03 02:02:38.914: I/DEBUG(4008): r8 4d9c3c0c r9 4c479dec 10 46cf260a fp 4d9c3c24 03-03 02:02:38.914: I/DEBUG(4008): ip 40262a04 sp 4d9c3bc8 lr 402d01dd microcomputer 402d0182 cpsr 00000030 03-03 02:02:38.914: I/DEBUG(4008): d0 00000001000c0102 d1 3a22364574614c7d 03-03 02:02:38.914: I/DEBUG(4008): d2 403fc0000000007d d3 363737343433350a 03-03 02:02:38.914: I/DEBUG(4008): d4 49544341223a2273 d5 6f6567222c224556 03-03 02:02:38.914: I/DEBUG(4008): d6 3a223645676e6f4c d7 000000013835372d 03-03 02:02:38.914: I/DEBUG(4008): d8 0000000000000000 d9 4040000000000000 03-03 02:02:38.914: I/DEBUG(4008): d10 0000000000000000 d11 4040000000000000 03-03 02:02:38.914: I/DEBUG(4008): d12 4040000000000000 d13 0000000000000021 03-03 02:02:38.914: I/DEBUG(4008): d14 0000000000000000 d15 0000000000000000 03-03 02:02:38.914: I/DEBUG(4008): d16 3fe62e42fefa39ef d17 3ff0000000000000 03-03 02:02:38.914: I/DEBUG(4008): d18 3fe62e42fee00000 d19 0000000000000000 03-03 02:02:38.914: I/DEBUG(4008): d20 0000000000000000 d21 3ff0000000000000 03-03 02:02:38.914: I/DEBUG(4008): d22 4028000000000000 d23 3ff0000000000000 03-03 02:02:38.914: I/DEBUG(4008): d24 0000000000000000 d25 3ff0000000000000 03-03 02:02:38.914: I/DEBUG(4008): d26 0000000000000000 d27 c028000000000000 03-03 02:02:38.914: I/DEBUG(4008): d28 0000000000000000 d29 3ff0000000000000 03-03 02:02:38.914: I/DEBUG(4008): d30 3ff0000000000000 d31 3fecccccb5c28f6e 03-03 02:02:38.914: I/DEBUG(4008): scr 60000013 03-03 02:02:39.046: I/DEBUG(4008): #00 microcomputer 0006b182 /scheme/lib/libcrypto.truthful (EVP_DigestFinal_ex) 03-03 02:02:39.046: I/DEBUG(4008): #01 microcomputer 0006b1d8 /scheme/lib/libcrypto.truthful (EVP_DigestFinal) 03-03 02:02:39.054: I/DEBUG(4008): #02 microcomputer 0001f814 /scheme/lib/libnativehelper.truthful 03-03 02:02:39.054: I/DEBUG(4008): #03 microcomputer 0001ec30 /scheme/lib/libdvm.truthful (dvmPlatformInvoke) 03-03 02:02:39.054: I/DEBUG(4008): #04 microcomputer 00058c70 /scheme/lib/libdvm.truthful (_Z16dvmCallJNIMethodPKjP6JValuePK6MethodP6Thread) 03-03 02:02:39.054: I/DEBUG(4008): codification about microcomputer: 03-03 02:02:39.054: I/DEBUG(4008): 402d0160 0003151e 4604b570 f7ff460d 4620ff81 ....p..F.F.... F 03-03 02:02:39.054: I/DEBUG(4008): 402d0170 f7ff4629 bd70ff93 4604b570 460e6800 )F....p.p..F.h.F 03-03 02:02:39.054: I/DEBUG(4008): 402d0180 68834615 dd062b40 21fa4810 44784a10 .F.h@+...H.!.JxD 03-03 02:02:39.054: I/DEBUG(4008): 402d0190 f7c8447a 6821f80f 698a4620 47904631 zD....!h F.i1F.G 03-03 02:02:39.054: I/DEBUG(4008): 402d01a0 b1154606 68836820 6822602b b12b6a13 .F.. h.h+`"h.j+. 03-03 02:02:39.054: I/DEBUG(4008): codification about lr: 03-03 02:02:39.054: I/DEBUG(4008): 402d01bc 68e06821 21006c4a ea0af7c4 bd704630 !h.hJl.!....0Fp. 03-03 02:02:39.054: I/DEBUG(4008): 402d01cc 00031492 000314b5 4604b570 ffcef7ff ........p..F.... 03-03 02:02:39.054: I/DEBUG(4008): 402d01dc 46204605 ff12f7ff bd704628 4604b573 .F F....(Fp.s..F 03-03 02:02:39.054: I/DEBUG(4008): 402d01ec 2102460d fb36f002 42ab6823 b123d020 .F.!..6.#h.B .#. 03-03 02:02:39.054: I/DEBUG(4008): 402d01fc b1136c5b f7c868e0 68a0fccf 05c26025 [l...h.....h%`.. 03-03 02:02:39.054: I/DEBUG(4008): representation representation about addr 68f52abc: 03-03 02:02:39.054: I/DEBUG(4008): 4d8c5000-4d9c4000 03-03 02:02:39.054: I/DEBUG(4008): (nary representation for code) 03-03 02:02:39.054: I/DEBUG(4008): b0001000-b0009000 /scheme/bin/linker 03-03 02:02:39.054: I/DEBUG(4008): stack: 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3b88 408d1f90 /scheme/lib/libdvm.truthful 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3b8c 412ef258 /dev/ashmem/dalvik-heap (deleted) 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3b90 00000001 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3b94 408d6c58 /scheme/lib/libdvm.truthful 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3b98 408d6fa8 /scheme/lib/libdvm.truthful 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3b9c 4c479dec 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3ba0 46cf260a /scheme/model/center.odex 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3ba4 408735e7 /scheme/lib/libdvm.truthful 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3ba8 412ef258 /dev/ashmem/dalvik-heap (deleted) 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bac 002bf070 [heap] 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bb0 412ef258 /dev/ashmem/dalvik-heap (deleted) 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bb4 00000000 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bb8 412ef268 /dev/ashmem/dalvik-heap (deleted) 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bbc 00000000 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bc0 df0027ad 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bc4 00000000 03-03 02:02:39.054: I/DEBUG(4008): #00 4d9c3bc8 001ad8f8 [heap] 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bcc 002ae0b8 [heap] 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bd0 00000004 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bd4 402d01dd /scheme/lib/libcrypto.truthful 03-03 02:02:39.054: I/DEBUG(4008): #01 4d9c3bd8 001ad8f8 [heap] 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3bdc 002ae0b8 [heap] 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3be0 00000004 03-03 02:02:39.054: I/DEBUG(4008): 4d9c3be4 4024e817 /scheme/lib/libnativehelper.truthful 03-03 02:02:39.406: D/CommService(7477): Checking OLSRd data... 03-03 02:02:39.500: D/CommService(7477): Monitoring nodes... 03-03 02:02:39.500: D/dalvikvm(7477): GC_FOR_ALLOC freed 2073K, sixteen% escaped 17118K/20359K, paused 51ms 03-03 02:02:39.632: D/dalvikvm(7477): GC_CONCURRENT freed 1998K, sixteen% escaped 17162K/20359K, paused 2ms+4ms 03-03 02:02:forty.406: D/CommService(7477): Checking OLSRd data... 03-03 02:02:forty.445: D/CommService(7477): Monitoring nodes... 03-03 02:02:forty.562: D/dalvikvm(7477): GC_CONCURRENT freed 2045K, sixteen% escaped 17158K/20359K, paused 3ms+4ms 03-03 02:02:forty one.406: D/CommService(7477): Checking OLSRd data... 03-03 02:02:forty one.445: D/CommService(7477): Monitoring nodes... 03-03 02:02:forty one.531: D/dalvikvm(7477): GC_CONCURRENT freed 2045K, sixteen% escaped 17154K/20359K, paused 3ms+12ms 03-03 02:02:forty two.406: D/CommService(7477): Checking OLSRd data... 03-03 02:02:forty two.445: D/CommService(7477): Monitoring nodes... 03-03 02:02:forty two.507: D/dalvikvm(7477): GC_CONCURRENT freed 2068K, sixteen% escaped 17128K/20359K, paused 3ms+4ms 03-03 02:02:forty two.679: D/dalvikvm(7477): GC_CONCURRENT freed 2006K, sixteen% escaped 17161K/20359K, paused 2ms+12ms 03-03 02:02:forty three.one hundred forty: I/BootReceiver(1236): Copying /information/tombstones/tombstone_05 to DropBox (SYSTEM_TOMBSTONE) 03-03 02:02:forty three.210: D/dalvikvm(1236): GC_FOR_ALLOC freed 912K, 17% escaped 10207K/12295K, paused 62ms 03-03 02:02:forty three.265: D/dalvikvm(1236): GC_FOR_ALLOC freed 243K, sixteen% escaped 10374K/12295K, paused 49ms 03-03 02:02:forty three.265: I/dalvikvm-heap(1236): Turn heap (frag lawsuit) to 10.507MB for 196628-byte allocation
Archetypal, acquire your tombstone stack hint, it volition beryllium printed all clip your app crashes. Thing similar this:
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** Physique fingerprint: 'XXXXXXXXX' pid: 1658, tid: 13086 >>> system_server <<< impressive eleven (SIGSEGV), codification 1 (SEGV_MAPERR), responsibility addr 64696f7e r0 00000000 r1 00000001 r2 ad12d1e8 r3 7373654d r4 64696f72 r5 00000406 r6 00974130 r7 40d14008 r8 4b857b88 r9 4685adb4 10 00974130 fp 4b857ed8 ip 00000000 sp 4b857b50 lr afd11108 microcomputer ad115ebc cpsr 20000030 d0 4040000040000000 d1 0000004200000003 d2 4e72cd924285e370 d3 00e81fe04b1b64d8 d4 3fbc71c7009b64d8 d5 3fe999999999999a d6 4010000000000000 d7 4000000000000000 d8 4000000000000000 d9 0000000000000000 d10 0000000000000000 d11 0000000000000000 d12 0000000000000000 d13 0000000000000000 d14 0000000000000000 d15 0000000000000000 scr 80000012 #00 microcomputer 000108d8 /scheme/lib/libc.truthful #01 microcomputer 0003724c /scheme/lib/libxvi020.truthful #02 microcomputer 0000ce02 /scheme/lib/libxvi020.truthful #03 microcomputer 0000d672 /scheme/lib/libxvi020.truthful #04 microcomputer 00010cce /scheme/lib/libxvi020.truthful #05 microcomputer 00004432 /scheme/lib/libwimax_jni.truthful #06 microcomputer 00011e74 /scheme/lib/libdvm.truthful #07 microcomputer 0004354a /scheme/lib/libdvm.truthful #08 microcomputer 00017088 /scheme/lib/libdvm.truthful #09 microcomputer 0001c210 /scheme/lib/libdvm.truthful #10 microcomputer 0001b0f8 /scheme/lib/libdvm.truthful #eleven microcomputer 00059c24 /scheme/lib/libdvm.truthful #12 microcomputer 00059e3c /scheme/lib/libdvm.truthful #thirteen microcomputer 0004e19e /scheme/lib/libdvm.truthful #14 microcomputer 00011b94 /scheme/lib/libc.truthful #15 microcomputer 0001173c /scheme/lib/libc.truthful codification about microcomputer: ad115e9c 4620eddc bf00bd70 0001736e 0001734e ad115eac 4605b570 447c4c0a f7f44620 e006edc8 ad115ebc 42ab68e3 68a0d103 f7f42122 6864edd2 ad115ecc d1f52c00 44784803 edbef7f4 bf00bd70 ad115edc 00017332 00017312 2100b51f 46682210 codification about lr: afd110e8 e2166903 1a000018 e5945000 e1a02004 afd110f8 e2055a02 e1a00005 e3851001 ebffed92 afd11108 e3500000 13856002 1a000001 ea000009 afd11118 ebfffe50 e1a01004 e1a00006 ebffed92 afd11128 e1a01005 e1550000 e1a02006 e3a03000 stack: 4b857b10 40e43be8 4b857b14 00857280 4b857b18 00000000 4b857b1c 034e8968 4b857b20 ad118ce9 /scheme/lib/libnativehelper.truthful 4b857b24 00000002 4b857b28 00000406
Past, usage the addr2line inferior (discovery it successful your NDK implement-concatenation) to discovery the relation that crashes. Successful this example, you bash
addr2line -e -f libc.truthful 0001173c
And you volition seat wherever you received the job. Of class this wont aid you since it is successful libc.
Truthful you mightiness harvester the utilities of limb-eabi-objdump to discovery the last mark.
Accept maine, it is a pugnacious project.
Conscionable for an replace. I deliberation I was doing Android autochthonal physique from the entire-origin-actor for rather a agelong clip, till present I person myself cautiously publication the NDK paperwork. Always since the merchandise NDK-r6, it has supplied a inferior known as ndk-stack.
Pursuing is the contented from authoritative NDK paperwork with the NDK-r9 tar shot.
Overview:
ndk-stack is a elemental implement that permits you to filter stack traces arsenic they look successful the output of ‘adb logcat’ and regenerate immoderate code wrong a shared room with the corresponding : values.
Successful a nutshell, it volition interpret thing similar:
I/DEBUG ( 31): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** I/DEBUG ( 31): Physique fingerprint: 'generic/google_sdk/generic/:2.2/FRF91/43546:eng/trial-keys' I/DEBUG ( 31): pid: 351, tid: 351 %gt;%gt;%gt; /information/section/ndk-assessments/crasher <<< I/DEBUG ( 31): impressive eleven (SIGSEGV), responsibility addr 0d9f00d8 I/DEBUG ( 31): r0 0000af88 r1 0000a008 r2 baadf00d r3 0d9f00d8 I/DEBUG ( 31): r4 00000004 r5 0000a008 r6 0000af88 r7 00013c44 I/DEBUG ( 31): r8 00000000 r9 00000000 10 00000000 fp 00000000 I/DEBUG ( 31): ip 0000959c sp be956cc8 lr 00008403 microcomputer 0000841e cpsr 60000030 I/DEBUG ( 31): #00 microcomputer 0000841e /information/section/ndk-exams/crasher I/DEBUG ( 31): #01 microcomputer 000083fe /information/section/ndk-checks/crasher I/DEBUG ( 31): #02 microcomputer 000083f6 /information/section/ndk-exams/crasher I/DEBUG ( 31): #03 microcomputer 000191ac /scheme/lib/libc.truthful I/DEBUG ( 31): #04 microcomputer 000083ea /information/section/ndk-checks/crasher I/DEBUG ( 31): #05 microcomputer 00008458 /information/section/ndk-assessments/crasher I/DEBUG ( 31): #06 microcomputer 0000d362 /scheme/lib/libc.truthful I/DEBUG ( 31):
Into the much readable output:
********** Clang dump: ********** Physique fingerprint: 'generic/google_sdk/generic/:2.2/FRF91/43546:eng/trial-keys' pid: 351, tid: 351 >>> /information/section/ndk-exams/crasher <<< impressive eleven (SIGSEGV), responsibility addr 0d9f00d8 Stack framework #00 microcomputer 0000841e /information/section/ndk-assessments/crasher : Regular zoo successful /tmp/foo/crasher/jni/zoo.c:thirteen Stack framework #01 microcomputer 000083fe /information/section/ndk-exams/crasher : Regular barroom successful /tmp/foo/crasher/jni/barroom.c:5 Stack framework #02 microcomputer 000083f6 /information/section/ndk-checks/crasher : Regular my_comparison successful /tmp/foo/crasher/jni/foo.c:9 Stack framework #03 microcomputer 000191ac /scheme/lib/libc.truthful Stack framework #04 microcomputer 000083ea /information/section/ndk-exams/crasher : Regular foo successful /tmp/foo/crasher/jni/foo.c:14 Stack framework #05 microcomputer 00008458 /information/section/ndk-checks/crasher : Regular chief successful /tmp/foo/crasher/jni/chief.c:19 Stack framework #06 microcomputer 0000d362 /scheme/lib/libc.truthful
Utilization:
To bash this, you volition archetypal demand a listing containing symbolic variations of your exertion’s shared libraries. If you usage the NDK physique scheme (i.e. ndk-physique), past these are ever positioned nether $PROJECT_PATH/obj/section/, wherever stands for your instrumentality’s ABI (i.e. armeabi by default).
You tin provender the logcat matter both arsenic nonstop enter to the programme, e.g.:
adb logcat | $NDK/ndk-stack -sym $PROJECT_PATH/obj/section/armeabi
Oregon you tin usage the -dump action to specify the logcat arsenic an enter record, e.g.:
adb logcat > /tmp/foo.txt $NDK/ndk-stack -sym $PROJECT_PATH/obj/section/armeabi -dump foo.txt
Crucial :
The implement seems for the first formation containing begins successful the logcat output, i.e. thing that appears to be like similar:
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Once transcript/pasting traces, don’t bury this formation from the traces, oregon ndk-stack gained’t activity accurately.
TODO:
A early interpretation of ndk-stack volition attempt to motorboat adb logcat and choice the room way mechanically. For present, you’ll person to bash these steps manually.
Arsenic of present, ndk-stack doesn’t grip libraries that don’t person debug accusation successful them. It whitethorn beryllium utile to attempt to observe the nearest relation introduction component to a fixed Microcomputer code (e.g. arsenic successful the libc.truthful illustration supra).
