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Questions tagged [backtrace]

A backtrace is the series of currently active function calls for the program.

On linux and mac, it is possible to obtain the backtrace using the backtrace() function.

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How to get name of calling function/method in PHP?

I am aware of function debug_backtrace, but I am looking for some ready to use implementation of function like GetCallingMethodName()? It would be perfect if it gave method's class too (if it is indeed a method).
Dawid Ohia
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How do I get the backtrace for all the threads in GDB?

Is there an equivalent command in GDB to that of WinDbg's !process 0 7? I want to extract all the threads in a dump file along with their backtraces in GDB. info threads doesn't output the stack traces. So, is there a command that does?
srikantha ks
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How to make backtrace()/backtrace_symbols() print the function names?

The Linux specific backtrace() and backtrace_symbols() allows you to produce a call trace of the program. However, it only prints function addresses, not their names for my program. How can I make them print the function names as well ? I've tried…
Lyke
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How can I get PHP to produce a backtrace upon errors?

Trying to debug PHP using its default current-line-only error messages is horrible. How can I get PHP to produce a backtrace (stack trace) when errors are produced?
chaos
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Win32 - Backtrace from C code

I'm currently looking for a way to get backtrace information under Windows, from C code (no C++). I'm building a cross-platform C library, with reference-counting memory management. It also have an integrated memory debugger that provides…
Macmade
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How can I save a PHP backtrace to the error log?

I'm using this right now: error_log(serialize(debug_backtrace())); But I have to unserialize it every time. Is there a better way to store backtraces?
Leo Jiang
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How to unwind the stack to get backtrace for the specified stack pointer (SP)?

I'm writing this for Android (ARM only), but I believe the principle is the same for generic Linux as well. I'm trying to capture the stack trace from within the signal handler, so that I can log it when my app crashes. This is what I've come up…
Violet Giraffe
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What is the meaning of question marks '?' in Linux kernel panic call traces?

The Call Trace contains entries like that: [] FunctionName+0xAB/0xCD [module_name] [] ? AnotherFunctionName+0x12/0x40 [module_name] [] ClearFunctionName+0x88/0x88 [module_name] What is the meaning of the '?' mark…
qdot
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Is it possible to print a backtrace in Rust without panicking?

Is it possible to print a backtrace (assuming RUST_BACKTRACE is enabled) without panicking? It seems that the only way of doing that is calling via panic!. If not, is there a reason for it?
ynimous
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Can one use libSegFault.so to get backtraces for SIGABRT?

The magic incantation LD_PRELOAD=/lib/libSegFault.so someapp runs someapp with libSegFault.so providing backtrace information on a SIGSEGV as described in many different places. Other than using signal(7)-like approaches to cause SIGABRT to invoke…
Rhys Ulerich
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How to include C backtrace in a kernel module code?

So I am trying to find out what kernel processes are calling some functions in a block driver. I thought including backtrace() in the C library would make it easy. But I am having trouble to load the backtrace. I copied this example function to…
ndasusers
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What's the difference between a stack-trace and a back-trace?

I really though I'd find an answer online, but I couldn't. Is there any difference at all? People say a 'backtrace' is generated upon something throwing an exception, while a stack trace is a list of method calls from the point when the application…
daremkd
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What exactly happens when compiling with -funwind-tables?

From: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html -fexceptions: Enable exception handling. Generates extra code needed to propagate exceptions. For some targets, this implies GCC generates frame unwind information for all…
Pendyala
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How to pass RUST_BACKTRACE=1 when running a Rust binary installed in Debian?

When I run a binary using cargo, I have the option to run it as follows - bash -c "RUST_BACKTRACE=1 cargo run --bin my_binary" This gives me a stack trace when the binary hits an error. But when I create a Debian package for the same binary, how…
Rajeev Ranjan
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Wrong line numbers from addr2line

I try to find the exact line of a call in the backtrace in C++ program. Right now I am using these lines (from the man page of backtrace) to get the trace: void *bt_buffer[1000]; char **bt_strings; int bt_nptrs = backtrace(bt_buffer, 1000); …
steffen
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