[Bug gdb/21221] gdb hangs while stepping an empty loop

luis.machado at linaro dot org sourceware-bugzilla@sourceware.org
Thu Oct 10 10:37:00 GMT 2019


https://sourceware.org/bugzilla/show_bug.cgi?id=21221

--- Comment #8 from Luis Machado <luis.machado at linaro dot org> ---
I completely agree that this is very annoying and non-intuitive.

I'm still investigating this and trying to break it down into separate cases.
Some of them are more complex to handle, while others should be simpler.

Clang does handle *some* cases better than GCC, but in others it still
generates line number transitions that will lead GDB to skip whole loops in
single-step mode.

Ideally we'd come up with a solution that handles the most common cases.

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