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by Agingcoder 1250 days ago
They most likely do (just look at the gcc bugzilla).

I find them because of a combination of : - a very large codebase - compiling with optimizations (O3) and targeting recent archs - yearly compiler upgrades - an extremely extensive testsuite

I have found all kinds of bugs (frontend, middle, backend) - the codegen ones tend to be very nasty to diagnose.