[Bug c/71813] fprintf/printf function exception

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71813

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |manu at gcc dot gnu.org

--- Comment #2 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> testArray goes out of scope and you access it outside of the scope. 
> Undefined behavior.

GCC 6.1 even warns you about this with -Wall -Wextra -O2:

warning: function returns address of local variable [-Wreturn-local-addr]

See https://gcc.gnu.org/wiki/FAQ#misoptimization