Richard Guenther wrote:
You can apart from the other suggestions also mark the function weak which will prevent both inlining and pure/const analysis.
How about just writing to a volatile variable from within the callee? void f() __attribute__((noinline)) { volatile int i; i = 3; } void g() { f(); }A valid GNU C compiler cannot eliminate the call to "f", as long as the call itself is reachable.
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