How to find the corresponding line number based on the crash address

 

Sometimes our program crash will display a crash interface prompting us where we are interrupted. How can we find the corresponding line number based on the interrupt address?

To achieve this goal, you must first configure some engineering properties.

C/C ++-> General-> debugging information format-> program database
C/C ++-> Optimization-> disable
Linker-> debug-> Generate debugging information-> Yes
           -> Generate a ing file-> Yes
           -> Ing file name-> $ (outdir)/$ (projectname). Map
           -> Ing export-> Yes
           -> Ing row-> Yes

int main (int argc, char* argv[]){    char * p = 0;    *p = 'c';    return 0;}

When the program is executed, the following error occurs: 0xc000005: Access conflict occurs when the write location 0x00000000"

Now let's take a look at the map file. First, you can see the reference loading address: preferred load address is 00400000.

Timestamp is 4639462c (Thu May 03 10:17:16 2007) Preferred load address is 00400000 Start         Length     Name                   Class 0001:00000000 00003b58H .text                   CODE 0002:00000000 000000c4H .idata$5                DATA 0002:000000d0 00000c40H .rdata                  DATA 0002:00000d10 00000048H .rdata$debug            DATA 0002:00000d60 00000008H .rdata$sxdata           DATA 0002:00000d68 00000004H .rtc$IAA                DATA 0002:00000d6c 00000004H .rtc$IZZ                DATA 0002:00000d70 00000004H .rtc$TAA                DATA 0002:00000d74 00000004H .rtc$TZZ                DATA 0002:00000d78 00000014H .idata$2                DATA 0002:00000d8c 00000014H .idata$3                DATA 0002:00000da0 000000c4H .idata$4                DATA 0002:00000e64 00000366H .idata$6                DATA 0002:000011ca 00000000H .edata                  DATA 0003:00000000 00000004H .CRT$XCA                DATA 0003:00000004 00000004H .CRT$XCAA               DATA 0003:00000008 00000004H .CRT$XCZ                DATA 0003:0000000c 00000004H .CRT$XIA                DATA 0003:00000010 00000008H .CRT$XIC                DATA 0003:00000018 00000004H .CRT$XIZ                DATA 0003:0000001c 00000004H .CRT$XPA                DATA 0003:00000020 00000004H .CRT$XPZ                DATA 0003:00000024 00000004H .CRT$XTA                DATA 0003:00000028 00000004H .CRT$XTZ                DATA 0003:00000030 00000274H .data                   DATA 0003:000002c0 00000598H .bss                    DATA

Crash address calculation:

Calculation: crash_address-preferred_load_address-0x1000

0x0040100e-0x00400000-0x1000 = 0x0000000e

Then find the corresponding OBJ in the map.

 

 Address         Publics by Value              Rva+Base     Lib:Object 0000:00000000       __except_list              00000000     <absolute> 0000:00000002       ___safe_se_handler_count   00000002     <absolute> 0001:00000000       _main                      00401000 f   test1.obj 0001:00000017       __amsg_exit                00401017 f   LIBC:crt0.obj 0001:0000003c       _mainCRTStartup            0040103c f   LIBC:crt0.obj 0001:00000203       ___crtExitProcess          00401203 f   LIBC:crt0dat.obj

Finally, find the first location that is less than the value calculated by OBJ and the calculated value in map.

Line numbers for./release/test1.obj (D:/test/test1/test1/test1.cpp) segment. Text 2 0001:00000000 3 0001:00000004 4 0001: 0000000b 5 0001:00000011

Then, find the first location in. Map that is smaller than the value we calculated.

So our interrupt location is at line 1.

Note: This article Reprinted from: http://blog.sina.com.cn/s/blog_4ae178ba0100w3sa.html