|
Linux涓璯cc錛実++甯哥敤緙栬瘧閫夐」
-x language filename 璁懼畾鏂囦歡鎵浣跨敤鐨勮璦,浣垮悗緙鍚嶆棤鏁?瀵逛互鍚庣殑澶氫釜鏈夋晥.涔熷氨鏄牴鎹害瀹氾紝C璇█鐨勫悗緙鍚嶇О鏄?c鐨勶紝鑰孋++鐨勫悗緙鍚嶆槸.C鎴栬?cpp,濡傛灉浣犲緢涓? 鎬э紝鍐沖畾浣犵殑C浠ｇ爜鏂囦歡鐨勫悗緙鍚嶆槸.pig 鍝堝搱錛岄偅浣犲氨瑕佺敤榪欎釜鍙傛暟,榪欎釜鍙傛暟瀵逛粬鍚庨潰鐨勬枃浠跺悕閮借搗浣滅敤錛岄櫎闈炲埌浜嗕笅涓涓弬鏁扮殑浣跨敤銆傚彲浠ヤ嬌鐢ㄧ殑鍙傛暟鏈変笅闈㈢殑榪欎簺錛? 銆銆`c', `objective-c', `c-header', `c++', `cpp-output', `assembler', and `a ssembler-with-cpp'. 銆銆鐪嬪埌鑻辨枃錛屽簲璇ュ彲浠ョ悊瑙ｇ殑銆?br> 銆銆渚嬪瓙鐢ㄦ硶: cd.. 銆銆gcc -x c hello.pig -x none filename /* 娉ㄩ噴涓殑涓嶅父鐢?*************************************************** -fno-asm 銆銆 *娉ㄩ噴瀹屾垚*********************************************/銆銆 -include file |
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褰撲竴涓▼搴忓穿婧冩椂錛屽湪榪涚▼褰撳墠宸ヤ綔鐩綍鐨刢ore鏂囦歡涓鍒朵簡璇ヨ繘紼嬬殑瀛樺偍鍥懼儚銆?font face="Times New Roman">core鏂囦歡浠呬粎鏄竴涓唴瀛樻槧璞?font face="Times New Roman">(
鍚屾椂鍔犱笂璋冭瘯淇℃伅)錛屼富瑕佹槸鐢ㄦ潵璋冭瘯鐨勩?/font>褰撶▼搴忔帴鏀跺埌浠ヤ笅UNIX淇″彿浼?xì)漶旂敓core鏂囦歡錛?/font>
|
鍚嶅瓧 |
璇存槑 |
ANSI C POSIX.1 |
SVR4 4.3+BSD |
緙虹渷鍔ㄤ綔 |
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SIGABRT |
寮傚父緇堟(abort) |
. . |
. . |
緇堟w/core |
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SIGBUS |
紜歡鏁呴殰 |
. |
. . |
緇堟w/core |
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SIGEMT |
紜歡鏁呴殰 |
|
. . |
緇堟w/core |
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SIGFPE |
綆楁湳寮傚父 |
. . |
. . |
緇堟w/core |
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SIGILL |
闈炴硶紜歡鎸囦護(hù) |
. . |
. . |
緇堟w/core |
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SIGIOT |
紜歡鏁呴殰 |
|
. . |
緇堟w/core |
|
SIGQUIT |
緇堢閫鍑虹 |
. |
. . |
緇堟w/core |
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SIGSEGV |
鏃犳晥瀛樺偍璁塊棶 |
. . |
. . |
緇堟w/core |
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SIGSYS |
鏃犳晥緋葷粺璋冪敤 |
|
. . |
緇堟w/core |
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SIGTRAP |
紜歡鏁呴殰 |
|
. . |
緇堟w/core |
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SIGXCPU |
瓚呰繃CPU闄愬埗(setrlimit) |
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. . |
緇堟w/core |
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SIGXFSZ |
瓚呰繃鏂囦歡闀垮害闄愬埗(setrlimit) |
|
. . |
緇堟w/core |
鍦ㄧ郴緇熼粯璁ゅ姩浣滃垪錛?#8220;緇堟w/core”琛ㄧず鍦ㄨ繘紼嬪綋鍓嶅伐浣滅洰褰曠殑core鏂囦歡涓鍒朵簡璇ヨ繘紼嬬殑瀛樺偍鍥懼儚錛堣鏂囦歡鍚嶄負(fù)core錛岀敱姝ゅ彲浠ョ湅鍑鴻繖縐嶅姛鑳藉緢涔呬箣鍓嶅氨鏄疷NIX鍔熻兘鐨勪竴閮ㄥ垎錛夈傚ぇ澶氭暟UNIX璋冭瘯紼嬪簭閮戒嬌鐢╟ore鏂囦歡浠ユ鏌ヨ繘紼嬪湪緇堟鏃剁殑鐘舵併?/font>
core鏂囦歡鐨勪駭鐢熶笉鏄疨OSIX.1鎵灞為儴鍒?鑰屾槸寰堝UNIX鐗堟湰鐨勫疄鐜扮壒寰併俇NIX絎?鐗堟病鏈夋鏌ユ潯浠? (a)鍜?b)錛屽茍涓斿叾婧愪唬鐮佷腑鍖呭惈濡備笅璇存槑錛?#8220;濡傛灉浣犳鍦ㄦ壘瀵諱繚鎶や俊鍙鳳紝閭ｄ箞褰撹緗?鐢ㄦ埛-ID鍛戒護(hù)鎵ц鏃訛紝灝嗗彲鑳戒駭鐢熷ぇ閲忕殑榪欑淇″彿”銆?.3 + BSD浜х敓鍚嶄負(fù)core.prog鐨勬枃浠訛紝鍏朵腑prog鏄鎵ц鐨勭▼搴忓悕鐨勫墠1 6涓瓧絎︺傚畠瀵筩ore鏂囦歡緇欎簣浜嗘煇縐嶆爣璇嗭紝鎵浠ユ槸涓縐嶆敼榪涚壒寰併?/font>
琛ㄤ腑“紜歡鏁呴殰”瀵瑰簲浜庡疄鐜板畾涔夌殑紜歡鏁呴殰銆傝繖浜涘悕瀛椾腑鏈夊緢澶氬彇鑷猆NIX鏃╁厛鍦―P-11涓婄殑瀹炵幇銆傝鏌ョ湅浣犳墍浣跨敤鐨勭郴緇熺殑鎵嬪唽錛屼互紜垏鍦扮‘瀹氳繖浜涗俊鍙峰搴斾簬鍝簺閿欒綾誨瀷銆?/font>
涓嬮潰姣旇緝璇︾粏鍦拌鏄庤繖浜涗俊鍙楓?/font>
• SIGABRT 璋冪敤abort鍑芥暟鏃朵駭鐢熸淇″彿銆傝繘紼嬪紓甯哥粓姝€?/font>
• SIGBUS 鎸囩ず涓涓疄鐜板畾涔夌殑紜歡鏁呴殰銆?/font>
• SIGEMT 鎸囩ず涓涓疄鐜板畾涔夌殑紜歡鏁呴殰銆?/font>
EMT榪欎竴鍚嶅瓧鏉ヨ嚜PDP-11鐨別mulator trap 鎸囦護(hù)銆?/font>
• SIGFPE 姝や俊鍙瘋〃紺轟竴涓畻鏈繍綆楀紓甯革紝渚嬪闄や互0錛屾誕鐐規(guī)孩鍑虹瓑銆?/font>
• SIGILL 姝や俊鍙鋒寚紺鴻繘紼嬪凡鎵ц涓鏉￠潪娉曠‖浠舵寚浠ゃ?/font>
4.3BSD鐢盿bort鍑芥暟浜х敓姝や俊鍙楓係IGABRT鐜板湪琚敤浜庢銆?/font>
• SIGIOT 榪欐寚紺轟竴涓疄鐜板畾涔夌殑紜歡鏁呴殰銆?/font>
IOT榪欎釜鍚嶅瓧鏉ヨ嚜浜嶱DP-11瀵逛簬杈撳叆錛忚緭鍑篢RAP(input/output TRAP)鎸囦護(hù)鐨勭緝鍐欍傜郴緇烿鐨勬棭鏈熺増鏈紝鐢盿bort鍑芥暟浜х敓姝や俊鍙楓係IGABRT鐜板湪琚敤浜庢銆?/font>
• SIGQUIT 褰撶敤鎴峰湪緇堢涓婃寜閫鍑洪敭錛堜竴鑸噰鐢–trl-\錛夋椂錛屼駭鐢熸淇″彿錛屽茍閫佽嚦鍓嶅彴榪?/font>
紼嬬粍涓殑鎵鏈夎繘紼嬨傛淇″彿涓嶄粎緇堟鍓嶅彴榪涚▼緇勶紙濡係IGINT鎵鍋氱殑閭ｆ牱錛夛紝鍚屾椂浜х敓涓涓猚ore鏂囦歡銆?/font>
• SIGSEGV 鎸囩ず榪涚▼榪涜浜嗕竴嬈℃棤鏁堢殑瀛樺偍璁塊棶銆?/font>
鍚嶅瓧SEGV琛ㄧず“孌佃繚渚嬶紙segmentation violation錛?#8221;銆?/font>
• SIGSYS 鎸囩ず涓涓棤鏁堢殑緋葷粺璋冪敤銆傜敱浜庢煇縐嶆湭鐭ュ師鍥狅紝榪涚▼鎵ц浜嗕竴鏉＄郴緇熻皟鐢ㄦ寚浠わ紝
浣嗗叾鎸囩ず緋葷粺璋冪敤綾誨瀷鐨勫弬鏁板嵈鏄棤鏁堢殑銆?/font>
• SIGTRAP 鎸囩ず涓涓疄鐜板畾涔夌殑紜歡鏁呴殰銆?/font>
姝や俊鍙峰悕鏉ヨ嚜浜嶱DP-11鐨凾RAP鎸囦護(hù)銆?/font>
• SIGXCPU SVR4鍜?.3+BSD鏀寔璧勬簮闄愬埗鐨勬蹇點(diǎn)傚鏋滆繘紼嬭秴榪囦簡鍏惰蔣C P U鏃墮棿闄愬埗錛屽垯浜х敓姝や俊鍙楓?/font>
• SIGXFSZ 濡傛灉榪涚▼瓚呰繃浜嗗叾杞枃浠墮暱搴﹂檺鍒訛紝鍒橲VR4鍜?.3+BSD浜х敓姝や俊鍙楓?/font>
鎽樿嚜銆奤NIX鐜楂樼駭緙栫▼銆嬬10绔?淇″彿銆?/font>
浣跨敤core鏂囦歡璋冭瘯紼嬪簭
鐪嬩笅闈㈢殑渚嬪瓙錛?/font>
/*core_dump_test.c*/
#include <stdio.h>
const char *str = "test";
void core_test(){
str[1] = 'T';
}
int main(){
core_test();
return 0;
}
緙栬瘧錛?br>gcc –g core_dump_test.c -o core_dump_test
濡傛灉闇瑕佽皟璇曠▼搴忕殑璇濓紝浣跨敤gcc緙栬瘧鏃跺姞涓?font face="Times New Roman">-g閫夐」錛岃繖鏍瘋皟璇?font face="Times New Roman">core鏂囦歡鐨勬椂鍊欐瘮杈冨鏄撴壘鍒伴敊璇殑鍦版柟銆?/font>
鎵ц錛?br> ./core_dump_test
孌甸敊璇?/font>
榪愯core_dump_test紼嬪簭鍑虹幇浜?#8220;孌甸敊璇?#8221;錛屼絾娌℃湁浜х敓core鏂囦歡銆傝繖鏄洜涓虹郴緇熼粯璁?font face="Times New Roman">core鏂囦歡鐨勫ぇ灝忎負(fù)0錛屾墍浠ユ病鏈夊垱寤恒傚彲浠ョ敤ulimit鍛戒護(hù)鏌ョ湅鍜屼慨鏀?font face="Times New Roman">core鏂囦歡鐨勫ぇ灝忋?br>ulimit -c 0
ulimit -c 1000
ulimit -c 1000
-c 鎸囧畾淇敼core鏂囦歡鐨勫ぇ灝忥紝1000鎸囧畾浜?font face="Times New Roman">core鏂囦歡澶у皬銆備篃鍙互瀵?font face="Times New Roman">core鏂囦歡鐨勫ぇ灝忎笉鍋氶檺鍒訛紝濡傦細(xì)
ulimit -c unlimited
ulimit -c unlimited
濡傛灉鎯寵淇敼姘鎬箙鐢熸晥錛屽垯闇瑕佷慨鏀歸厤緗枃浠訛紝濡?font face="Times New Roman"> .bash_profile銆?font face="Times New Roman">/etc/profile鎴?font face="Times New Roman">/etc/security/limits.conf銆?/font>
鍐嶆鎵ц錛?br>./core_dump_test
孌甸敊璇?/font> (core dumped)
ls core.*
core.6133
鍙互鐪嬪埌宸茬粡鍒涘緩浜嗕竴涓?font face="Times New Roman">core.6133鐨勬枃浠?font face="Times New Roman">.6133鏄?font face="Times New Roman">core_dump_test紼嬪簭榪愯鐨勮繘紼?font face="Times New Roman">ID銆?/font>
璋冨紡core鏂囦歡
core鏂囦歡鏄釜浜岃繘鍒舵枃浠訛紝闇瑕佺敤鐩稿簲鐨勫伐鍏鋒潵鍒嗘瀽紼嬪簭宕╂簝鏃剁殑鍐呭瓨鏄犲儚銆?/font>
file core.6133
core.6133: ELF 32-bit LSB core file Intel 80386, version 1 (SYSV), SVR4-style, from 'core_dump_test'
鍦?font face="Times New Roman">Linux涓嬪彲浠ョ敤GDB鏉ヨ皟璇?font face="Times New Roman">core鏂囦歡銆?/font>
gdb core_dump_test core.6133
GNU gdb Red Hat Linux (5.3post-0.20021129.18rh)
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux-gnu"...
Core was generated by `./core_dump_test'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/tls/libc.so.6...done.
Loaded symbols for /lib/tls/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
#0 0x080482fd in core_test () at core_dump_test.c:7
7 str[1] = 'T';
(gdb) where
#0 0x080482fd in core_test () at core_dump_test.c:7
#1 0x08048317 in main () at core_dump_test.c:12
#2 0x42015574 in __libc_start_main () from /lib/tls/libc.so.6
GDB涓敭鍏?font face="Times New Roman">where錛屽氨浼?xì)鐪嬪埌绋嬪簭宕╂簝鏃跺爢鏍堜俊鎭Q堝綋鍓嶅嚱鏁頒箣鍓嶇殑鎵鏈夊凡璋冪敤鍑芥暟鐨勫垪琛紙鍖呮嫭褰撳墠鍑芥暟錛夛紝gdb鍙樉紺烘渶榪戝嚑涓級錛屾垜浠緢瀹規(guī)槗鎵懼埌鎴戜滑鐨勭▼搴忓湪鏈鍚庡穿婧冪殑鏃跺欒皟鐢ㄤ簡core_dump_test.c 絎?font face="Times New Roman">7琛岀殑浠ｇ爜錛屽鑷寸▼搴忓穿婧冦傛敞鎰忥細(xì)鍦ㄧ紪璇戠▼搴忕殑鏃跺欒鍔犲叆閫夐」-g銆傛?zhèn)ㄤ篃鍙互璇曡瘯鍏朵粬鍛戒护锛屻濡傘fram銆?font face="Times New Roman">list絳夈傛洿璇︾粏鐨勭敤娉曪紝璇鋒煡闃?font face="Times New Roman">GDB鏂囨。銆?/font>
core鏂囦歡鍒涘緩鍦ㄤ粈涔堜綅緗?/strong>
鍦ㄨ繘紼嬪綋鍓嶅伐浣滅洰褰曠殑涓嬪垱寤恒傞氬父涓庣▼搴忓湪鐩稿悓鐨勮礬寰勪笅銆備絾濡傛灉紼嬪簭涓皟鐢ㄤ簡chdir鍑芥暟錛屽垯鏈夊彲鑳芥敼鍙樹簡褰撳墠宸? 浣滅洰褰曘傝繖鏃禼ore鏂囦歡鍒涘緩鍦╟hdir鎸囧畾鐨勮礬寰勪笅銆傛湁濂藉紼嬪簭宕╂簝浜嗭紝鎴戜滑鍗存壘涓嶅埌core鏂囦歡鏀懼湪浠涔堜綅緗傚拰chdir鍑芥暟灝辨湁鍏崇郴銆傚綋鐒剁▼搴? 宕╂簝浜嗕笉涓瀹氶兘浜х敓core鏂囦歡銆?/font>
鍦ㄤ笅鍒楁潯浠朵笅涓嶄駭鐢焎ore鏂囦歡錛?br>( a )榪涚▼鏄緗?鐢ㄦ埛-ID錛岃屼笖褰撳墠鐢ㄦ埛騫墮潪紼嬪簭鏂囦歡鐨勬墍鏈夎咃紱
( b )榪涚▼鏄緗?緇?ID錛岃屼笖褰撳墠鐢ㄦ埛騫墮潪璇ョ▼搴忔枃浠剁殑緇勬墍鏈夎咃紱
( c )鐢ㄦ埛娌℃湁鍐欏綋鍓嶅伐浣滅洰褰曠殑璁稿彲鏉冿紱
( d )鏂囦歡澶ぇ銆俢ore鏂囦歡鐨勮鍙潈(鍋囧畾璇ユ枃浠跺湪姝や箣鍓嶅茍涓嶅瓨鍦?閫氬父鏄敤鎴瘋/鍐欙紝緇勮鍜屽叾浠栬銆?/font>
鍒╃敤GDB璋冭瘯core鏂囦歡錛屽綋閬囧埌紼嬪簭宕╂簝鏃舵垜浠笉鍐嶆潫鎵嬫棤絳栥?/font>
]]>
]]>
褰撶▼搴忚鍋滀綇浜嗭紝浣犻渶瑕佸仛鐨勭涓浠朵簨灝辨槸鏌ョ湅紼嬪簭鏄湪鍝噷鍋滀綇鐨勩傚綋浣犵殑紼嬪簭璋冪敤浜嗕竴涓嚱鏁幫紝鍑芥暟鐨勫湴鍧錛屽嚱鏁板弬鏁幫紝鍑芥暟鍐呯殑灞閮ㄥ彉閲忛兘浼?xì)琚帇鍏?#8220;鏍?#8221;錛?/font>Stack錛変腑銆備綘鍙互鐢?/font>GDB鍛戒護(hù)鏉ユ煡鐪嬪綋鍓嶇殑鏍堜腑鐨勪俊鎭?/font>
涓嬮潰鏄竴浜涙煡鐪嬪嚱鏁拌皟鐢ㄦ爤淇℃伅鐨?/font>GDB鍛戒護(hù)錛?/font>
Backtrace錛?/font>bt 鎵撳嵃褰撳墠鐨勫嚱鏁拌皟鐢ㄦ爤鐨勬墍鏈変俊鎭?/font>濡傦細(xì)
(gdb) bt
#0 func (n=250) at tst.c:6
#1 0x08048524 in main (argc=1, argv=0xbffff674) at tst.c:30
#2 0x400409ed in __libc_start_main () from /lib/libc.so.6
浠庝笂鍙互鐪嬪嚭鍑芥暟鐨勮皟鐢ㄦ爤淇℃伅錛?/font>__libc_start_main --> main() --> func()
backtrace <n>錛?bt <n> n鏄竴涓鏁存暟錛岃〃紺哄彧鎵撳嵃鏍堥《涓?/font>n灞傜殑鏍堜俊鎭?/font>
backtrace <-n> 錛?/font>bt <-n> -n琛ㄤ竴涓礋鏁存暟錛岃〃紺哄彧鎵撳嵃鏍堝簳涓?/font>n灞傜殑鏍堜俊鎭?nbsp;
濡傛灉浣犺鏌ョ湅鏌愪竴灞傜殑淇℃伅錛屼綘闇瑕佸湪鍒囨崲褰撳墠鐨勬爤錛屼竴鑸潵璇達(dá)紝紼嬪簭鍋滄鏃訛紝鏈欏跺眰鐨勬爤灝辨槸褰撳墠鏍堬紝濡傛灉浣犺鏌ョ湅鏍堜笅闈㈠眰鐨勮緇嗕俊鎭紝棣栧厛瑕佸仛鐨勬槸鍒囨崲褰撳墠鏍堛?/font>
frame <n>錛?/font>f <n> n鏄竴涓粠0寮濮嬬殑鏁存暟錛屾槸鏍堜腑鐨勫眰緙栧彿銆傛瘮濡傦細(xì)frame 0錛岃〃紺烘爤欏訛紝frame 1錛岃〃紺烘爤鐨勭浜屽眰銆?/font>
up <n> 琛ㄧず鍚戞爤鐨勪笂闈㈢Щ鍔?/font>n灞傦紝鍙互涓嶆墦n錛岃〃紺哄悜涓婄Щ鍔ㄤ竴灞傘?/font>
down <n> 琛ㄧず鍚戞爤鐨勪笅闈㈢Щ鍔?/font>n灞傦紝鍙互涓嶆墦n錛岃〃紺哄悜涓嬬Щ鍔ㄤ竴灞傘?
涓婇潰鐨勫懡浠わ紝閮戒細(xì)鎵撳嵃鍑虹Щ鍔ㄥ埌鐨勬爤灞傜殑淇℃伅銆傚鏋滀綘涓嶆兂璁╁叾鎵撳嚭淇℃伅銆備綘鍙互浣跨敤榪欎笁涓懡浠わ細(xì)
select-frame <n> 瀵瑰簲浜?frame 鍛戒護(hù)銆?/font>
up-silently <n> 瀵瑰簲浜?up 鍛戒護(hù)銆?/font>
down-silently <n> 瀵瑰簲浜?down 鍛戒護(hù)銆?/font>
鏌ョ湅褰撳墠鏍堝眰鐨勪俊鎭紝浣犲彲浠ョ敤浠ヤ笅GDB鍛戒護(hù)錛?/font>
frame 鎴?f 浼?xì)鎵撳嵃鍑簶q欎簺淇℃伅錛氭爤鐨勫眰緙栧彿錛屽綋鍓嶇殑鍑芥暟鍚嶏紝鍑芥暟鍙傛暟鍊鹼紝鍑芥暟鎵鍦ㄦ枃浠跺強(qiáng)琛屽彿錛屽嚱鏁版墽琛屽埌鐨勮鍙ャ?/font>
info frame錛?/font>info f 榪欎釜鍛戒護(hù)浼?xì)鎵撳嵃鍑烘洿湄?fù)璇︾粏鐨勫綋鍓嶆爤灞傜殑淇℃伅錛屽彧涓嶈繃錛屽ぇ澶氭暟閮芥槸榪愯鏃剁殑鍐呭唴鍦板潃銆傛瘮濡傦細(xì)鍑芥暟鍦板潃錛岃皟鐢ㄥ嚱鏁扮殑鍦板潃錛岃璋冪敤鍑芥暟鐨勫湴鍧錛岀洰鍓嶇殑鍑芥暟鏄敱浠涔堟牱鐨勭▼搴忚璦鍐欐垚鐨勩佸嚱鏁板弬鏁板湴鍧鍙?qiáng)鍊箋佸眬閮ㄥ彉閲忕殑鍦板潃絳夌瓑銆?/font>濡傦細(xì)(gdb) info f
Stack level 0, frame at 0xbffff5d4:
eip = 0x804845d in func (tst.c:6); saved eip 0x8048524
called by frame at 0xbffff60c
source language c.
Arglist at 0xbffff5d4, args: n=250
Locals at 0xbffff5d4, Previous frame's sp is 0x0
Saved registers:
ebp at 0xbffff5d4, eip at 0xbffff5d8
info args 鎵撳嵃鍑哄綋鍓嶅嚱鏁扮殑鍙傛暟鍚嶅強(qiáng)鍏跺箋?nbsp;
info locals 鎵撳嵃鍑哄綋鍓嶅嚱鏁頒腑鎵鏈夊眬閮ㄥ彉閲忓強(qiáng)鍏跺箋?nbsp;
info catch 鎵撳嵃鍑哄綋鍓嶇殑鍑芥暟涓殑寮傚父澶勭悊淇℃伅銆?/font>
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