LMDBG-SYM(1) LMDBG-SYM(1) NAME lmdbg-sym - convert lmdbg-run addresses to source code positions. SYNOPSIS lmdbg-sym [OPTIONS] [files...] DESCRIPTION lmdbg-sym lmdbg-sym takes as input a log file generated by lmdbg-run or other lmdbg-* programs and converts addresses to source code positions and function names if it is possible. This is accomplished with a help of ex- ternal programs, gdb(1) or addr2line(1). The result may look like the fol- lowing realloc ( 0xbb901800 , 777 ) --> 0xbb901c00 0xbbbe58e8 0xbbbe5a37 0x8048764 tests/test2.c:10 main 0x8048584 0x80484e7 Here lmdbg-sym found out that the address 0x8048764 corresponded to the function main, in the source file tests/test2.c at the line number 10. The address, the source file name and the function name are separated by a TAB character. Several log files can be analysed with lmdbg-sym as long as they refer to a single program. OPTIONS -h Display the help message. -V Display the lmdbg version. -g Use gdb(1) for resolving symbols. This is the default. -a Use addr2line(1) for resolving symbols. -P progname Specify the path to the program the log file of which is being analysed. If not given, the program path is used that is found in the logfile. -s library:flags Specify the library to open with dlopen(3) and flags, separated by a colon character. Allowed flags are: RTLD_LAZY, RTLD_NOW and RTLD_GLOBAL . This option can be used repeatedly. ENVIRONMENT LMDBG_LIB Path to LD_PRELOAD'ed liblmdbg dynamic library. It defaults to /usr/local/lib/liblmdbg.so LMDBG_GDB gdb(1) program to run, defaults to gdb. EXAMPLE $ cat -n testme.c 1 #include <stdlib.h> 2 3 int main () 4 { 5 int i; 6 void *p1, *p2; 7 p1 = malloc (100); 8 for (i=0; i < 3; ++i){ 9 p2 = realloc (NULL, 10+30*i); 10 } 11 free (p1); 12 free (p2); 13 14 return 0; 15 } $ cc -O0 -g -o testme testme.c $ lmdbg-run -T2 -B2 -f 'lmdbg-sym' -o log ./testme $ cat log info progname ./testme malloc ( 100 ) --> 0xbb901080 num: 1 0x8048789 testme.c:7 main realloc ( NULL , 10 ) --> 0xbb903040 num: 2 0x80487bb testme.c:9 main realloc ( NULL , 40 ) --> 0xbb905070 num: 3 0x80487bb testme.c:9 main realloc ( NULL , 70 ) --> 0xbb904060 num: 4 0x80487bb testme.c:9 main free ( 0xbb901080 ) num: 5 0x80487d7 testme.c:12 main free ( 0xbb904060 ) num: 6 0x80487e3 testme.c:14 main $ EXAMPLE lmdbg-sym -h lmdbg-sym -V lmdbg-run -o _log ./my_app && lmdbg-leaks _log > _log_leaks && lmdbg-sym -a ./my_app _log_leaks > _log_leaks2 && lmdbg-sysleaks -s _log_leaks2 > _log_final lmdbg-run -p 'lmdbg-leaks | lmdbg-sym -p > _log' ./my_app <args> lmdbg-sym -g -s /path/to/dll1.so RTLD_NOW -p < _log SEE ALSO lmdbg(1), lmdbg-run(1), lmdbg-stat(1), lmdbg-sort(1), lmdbg-grep(1), lmdbg- head(1), lmdbg-leaks(1), lmdbg-sysleaks(1), lmdbg-strip(1), lmdbg-mod- ules(1), gdb(1), addr2line(1) AUTHOR Aleksey Cheusov <vle@gmx.net> Sep 2, 2012 LMDBG-SYM(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT | EXAMPLE | EXAMPLE | SEE ALSO | AUTHOR
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