[Bug middle-end/42561] missing uninitialized variable warning on simple arrays

[manu at gcc dot gnu dot org]

------- Comment #5 from manu at gcc dot gnu dot org  2010-02-24 13:31 -------
(In reply to comment #4)
> 
> What would be the implementation steps to fix this issue? 

1) Create a small self-contained testcase

2) Examine the dumps (-fdump-tree- options) and debug the compiler to know
exactly why the warning is missing. Typical cases are common constant
propagation, not enough alias information, not enough optimization, too much
optimization, and bugs.

3) Propose a way to fix the above problem that does not regress on
optimization.

4) Send a patch to gcc-patches (http://gcc.gnu.org/contribute.html)

5) Profit.

Any of those steps would help. Unfortunately, they have to be done in order.

Before confirming this, we would need to do (2), and we don't even have (1).


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manu at gcc dot gnu dot org changed:

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42561