[PATCH] D144174: [Support][RISCV] Disable use of backtrace() for RISC-V backtraces

[Luís Marques via Phabricator via llvm-commits]

luismarques added a comment.

In D144174#4141913 <https://reviews.llvm.org/D144174#4141913>, @reames wrote:

> Can you give a bit more context on *why* backtrace is broken?  And on which systems you've observed this?  This is the first time I'm hearing this.

https://forums.sifive.com/t/how-to-get-backtrace-in-rtos-based-on-risc-v-64/5643/2:

> On RISC-V, the only reliable way to backtrace is to use the EH unwind info. I don’t think that the glibc backtrace() function will work.

I've observed this in Linux glibc RV64 systems (Fedora and Ubuntu).


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  https://reviews.llvm.org/D144174/new/

https://reviews.llvm.org/D144174