[cfe-dev] Working on the rest of PR10063: destructors and the CFG are causing issues with -Wreturn-type

Ted Kremenek kremenek at apple.com
Mon Sep 12 11:30:12 PDT 2011


On Sep 12, 2011, at 2:22 AM, Chandler Carruth wrote:

> If this patch is OK, or after any performance tuning you'd like to see here, I think I also better understand the FIXME in the analysis file. Do you actually want to switch the CFG to have *no* successors for blocks which contain a no-return element? That seems like it would be a very clean way of modelling this and would simplify the analysis for -Wreturn-type significantly.

One possibility is to create a special empty block, "noreturn", that all blocks ending with a noreturn destructor/call jump to.  That block would then have "Exit" as its successor.  -Wreturn-type could just walk the predecessors of Exit, and skip this block.
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