Use .debug_aranges

[JunyiXie]

give a sample, thanks.

[philipc]

Not sure what you mean by "use it alone". There's sample usage in the example, the tests and also in the backtrace-rs crate.

[JunyiXie]

Like using addr2line. In terminal.

[philipc]

You'll need to install rust, checkout a copy of the addr2line source code, and build the example with cargo build --examples --release. The binary will be at target/release/examples/addr2line.

[JunyiXie]

Does this tool support dsym?

[philipc]

Yes, but you need to specify the dsym on the command line instead of the executable.

[JunyiXie]

thanks.
How to do it?
use --help, don't find the relevant information.

[philipc]

I'm not able to run it right now to test, but something like echo 0x1234 | addr2line -e <path-to-dsym>.

[JunyiXie]

thanks. It's work well.

[JunyiXie]

21:05:03 › echo 0x0000b1e7 | ./addr2line  -s -i -f -p -a -e /Users/xiejunyi/Desktop/atosl/atosl/test/res/CrashTest3Dwarf.thin
0x000000000000b1e7: -[QDCViewController sendCrash:] ??:0

Is there a problem with the line number and file name?

[philipc]

Not sure, I can look into it later. I assume this is from https://github.com/dechaoqiu/atosl/tree/master/test/res. Does the x86_64 file work? Maybe we are missing something specific to arm.

[JunyiXie]

yes. It's from there. x86_64 file：

echo 0x00000001000010a0 | ./addr2line  -s -i -f -p -a -e /Users/xiejunyi/Desktop/atosl/atosl/test/res/TestMac1.thin
0x00000001000010a0: -[QDCAppDelegate applicationDidFinishLaunching:] ??:0

[philipc]

Those files have neither DW_AT_high_pc nor DW_AT_ranges attributes on their DW_TAG_compile_unit entries as required by the DWARF spec, so we're ignoring them. They do have a valid .debug_aranges though, so maybe the best fix would be to start using that.

[philipc]

Fixed in #200