How to compare disassembly of zero cost exceptions with the old approach?

svick 0
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I want to understand how "zero-cost exceptions" differ from the previous approach used to compile exceptions, so I want to look at the assembly code of some program compiled using both, to compare them. How can I do that?

Is there a GCC option I can use to switch between them? Or is there an old version of GCC that uses the old approach (ideally one that's available on Godbolt's Compiler Explorer)? Or something else?

I'm interested in x64 on Linux.

disassembly x86-64 exception gcc c++
1 Answers

According to this question, GCC on linux uses zero-cost exceptions by default but can be configured to use the old ones (SJLJ). It seems you will need to build GCC yourself (and configure with --enable-sjlj-exceptions)

Nelfeal0
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