Bug 20631 – Calling exit in module destructor yields undefined behaviour

The following snippet yields inconsistent behaviour depending on the current platform: ------------------------------------------- import core.stc.stdlib : exit; import core.stdc.stdio : printf; struct X() { static ~this() { printf("~this()\n"); fflush(stdout); exit(0); } } static ~this() { printf("g: ~this()\n"); fflush(stdout); } int main() { alias X!() x; return 1; } ------------------------------------------- Win64: -------------- ~this() -------------- Exit status 0 Some posix platforms: -------------- ~this() g: ~this() -------------- Exit status 0 (???) (Extracted from runnable/test52.d in DMDs test suite)

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