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cs01 / gdbgui

Browser-based frontend to gdb (gnu debugger). Add breakpoints, view the stack, visualize data structures, and more in C, C++, Go, Rust, and Fortran. Run gdbgui from the terminal and a new tab will open in your browser.
https://gdbgui.com
GNU General Public License v3.0
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[Windows 10] Attach to process doesn't fetch source or any stats; fetching manually produces error #180

Open N4rki opened 6 years ago

N4rki commented 6 years ago
OS is Windows 10

When attaching to a process, the process is stopped as it should but the box where the code goes and all stats on the right hand side are left blank. So the behavior is different that in this video. My code is a simple c++ programm that prints "Hello World!" every 3 seconds. I compiled with -g. When I now try to point gdbgui to the source code by putting in the path to my helloworld.cpp on the left hand side, the command box prints out some odd error each time I 1)put in any letter 2)hit enter or 3)click "fetch source files" Here's the error:

c/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/config/i386/cygwin.S",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/config/i386/cygwin.S"},{file="../../../src/gcc-6.3.0/libgcc/config/i386/cygwin.S",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/config/i386/cygwin.S"},{file="../../mingwrt/dllcrt1.c",fullname="/home/keith/src/mingw/mingw-wsl-outgoing/build/mingwrt/../../mingwrt/dllcrt1.c"}]

Also, the first time I git enter with the right path and file in the fetch source files textbox (C:\Users\jcj-vb\C_helloworld\helloworld.cpp) the command promt prints File not found: C in red letters. Although the path is definitely correct. Afterwards each enter produces that first error.

Describe your environment
cs01 commented 6 years ago

Thanks for the detailed report. For some reason the lower level library pygdbmi is messing up when it tries to parse the output of gdb. The long line at the beginning 

c/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/libgcc2.c",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/libgcc2.c"},{file="../../../src/gcc-6.3.0/libgcc/config/i386/cygwin.S",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/config/i386/cygwin.S"},{file="../../../src/gcc-6.3.0/libgcc/config/i386/cygwin.S",fullname="/home/keith/src/mingw/gcc-build/gcc-6.3.0-mingw32-cross-native/mingw32/libgcc/../../../src/gcc-6.3.0/libgcc/config/i386/cygwin.S"},{file="../../mingwrt/dllcrt1.c",fullname="/home/keith/src/mingw/mingw-wsl-outgoing/build/mingwrt/../../mingwrt/dllcrt1.c"}]

is actually gdb's "machine interface" output that is meant to be parsed by gdbgui and translated into a friendly webpage. If you could get me the original output, I could fix the parser. To get the original output, you'd need to run gdb with the -i=mi2 flag (this would be done in a normal terminal outside of gdbgui).

gdb -i=mi2

Then you'd run all the same commands gdbgui runs. You can see these commands by clicking the gear icon in the top right and clicking Print all sent commands in console, including those sent automatically by gdbgui. Then you could copy and paste the entire session and paste it back in this issue, and I could use that to debug the issue.

Just to be sure I understand though: You are able to debug the program, but are having trouble looking at a particular source file and loading the list of source files, correct?

sabbay commented 6 years ago

Hi, I`m having the problem that you are talking about when I run example for rust.

Just to be sure I understand though: You are able to debug the program, but are having trouble looking at a particular source file and loading the list of source files, correct?

First error on startup is: File not found: main

I can than start debugging manually via GDB console. Next thing im served disassembled code.

When i press "fetch source files" Im seeing in GDB console

},{file="libstd\\sys\\windows/thread_local.rs",fullname="C:\\projects\\rust\\src/libstd\\sys\\windows/thread_local.rs"},{file="libstd\ hread/local.rs",fullname="C:\\projects\\rust\\src/libstd\ hread/local.rs"},{file="libstd\\sys_common/thread_local.rs",fullname="C:\\projects\\rust\\src/libstd\\sys_common/thread_local.rs"},{file="libstd\\sys_common/at_exit_imp.rs",fullname="C:\\projects\\rust\\src/libstd\\sys_common/at_exit_imp.rs"},{file="libstd\\lib.rs",fullname="C:\\projects\\rust\\src/libstd\\lib.rs"},{file="C:\\projects\\rust\\src\\libcore/ptr.rs",fullname="C:\\projects\\rust\\src\\libcore/ptr.rs"},{file="src\\main.rs",fullname="C:\\Users\\msabb\\Documents\\coding\\rust\\rust\\src\\main.rs"},{file="C:\\projects\\rust\\src\\libcore\\fmt/mod.rs",fullname="C:\\projects\\rust\\src\\libcore\\fmt/mod.rs"},{file="C:\\projects\\rust\\src\\libcore/mem.rs",fullname="C:\\projects\\rust\\src\\libcore/mem.rs"},{file="src\\main.rs",fullname="C:\\Users\\msabb\\Documents\\coding\\rust\\rust\\src\\main.rs"},{file="C:\\projects\\rust\\src\\libcore\\fmt/mod.rs",fullname="C:\\projects\\rust\\src\\libcore\\fmt/mod.rs"},{file="src\\main.rs",fullname="C:\\Users\\msabb\\Documents\\coding\\rust\\rust\\src\\main.rs"},{file="C:\\projects\\rust\\src\\liballoc/slice.rs",fullname="C:\\projects\\rust\\src\\liballoc/slice.rs"},{file="src\\main.rs",fullname="C:\\Users\\msabb\\Documents\\coding\\rust\\rust\\src\\main.rs"},{file="C:\\projects\\rust\\src\\libcore\\slice/mod.rs",fullname="C:\\projects\\rust\\src\\libcore\\slice/mod.rs"},{file="src\\main.rs",fullname="C:\\Users\\msabb\\Documents\\coding\\rust\\rust\\src\\main.rs"},{file="C:\\projects\\rust\\src\\libstd/rt.rs",fullname="C:\\projects\\rust\\src\\libstd/rt.rs"},{file="C:\\projects\\rust\\src\\libcore\\slice/mod.rs",fullname="C:\\projects\\rust\\src\\libcore\\slice/mod.rs"},{file="src\\main.rs",fullname="C:\\Users\\msabb\\Documents\\coding\\rust\\rust\\src\\main.rs"},{file="C:\\projects\\rust\\src\\libcore/ptr.rs",fullname="C:\\projects\\rust\\src\\libcore/ptr.rs"},{file="C:\\projects\\rust\\src\\libcore\\ops/function.rs",fullname="C:\\projects\\rust\\src\\libcore\\ops/function.rs"},{file="src\\main.rs",fullname="C:\\Users\\msabb\\Documents\\coding\\rust\\rust\\src\\main.rs"}]

Although if I load "./src/main.rs" manually(drop down doesn`t show anything) everything seems to work. Problem occurs when source file being debugged changes, all I can see is disassembled code again.

The session from running gdb -i=mi2 and pasting commands from gdbgui console is pasted here: https://pastebin.com/ZqUwPe4Q

Describe your environment: