[Bug c/94010] [missed optimization] constant automatic string variable not elided

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94010

--- Comment #4 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
See bug 59863, with discussion of the requirement for distinct copies of 
the array in recursive calls to have distinct addresses.  (Thus, this 
would definitely not be valid without -fmerge-all-constants, as the 
example in this bug could involve a recursive call - whereas the example 
in bug 59863 does not involve the address of the const array escaping, so 
the transformation would be valid in that example even without 
-fmerge-all-constants.  It's not valid for code to write to an array 
defined as const, however.)