[Bug tree-optimization/86708] strlen of an empty aggregate element or member string not folded

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86708

Andrew Pinski  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |FIXED
   Target Milestone|--- |10.0

--- Comment #3 from Andrew Pinski  ---
Fixed by r10-2769.
Specifically this part of the patch:
* gimple-fold.c (fold_nonarray_ctor_reference): Return a STRING_CST
for missing initializers.

[Bug tree-optimization/86708] strlen of an empty aggregate element or member string not folded

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86708

Martin Sebor  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
   Last reconfirmed||2019-03-13
 Ever confirmed|0   |1

--- Comment #2 from Martin Sebor  ---
Confirmed on the basis of bug 89688.

[Bug tree-optimization/86708] strlen of an empty aggregate element or member string not folded

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86708

Martin Sebor  changed:

   What|Removed |Added

   Keywords||missed-optimization
 Blocks||83819

--- Comment #1 from Martin Sebor  ---
The declaration of a in the test case should have been:

  const char a[2][4] = { "123", /* a[1] = "" */ };


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83819
[Bug 83819] [meta-bug] missing strlen optimizations