[Bug tree-optimization/18501] [6/7/8/9 Regression] Missing 'used uninitialized' warning (CCP)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=18501

Jakub Jelinek  changed:

   What|Removed |Added

   Target Milestone|6.5 |7.4

--- Comment #87 from Jakub Jelinek  ---
GCC 6 branch is being closed

[Bug tree-optimization/18501] [6/7/8/9 Regression] Missing 'used uninitialized' warning (CCP)

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=18501

Manuel López-Ibáñez  changed:

   What|Removed |Added

 CC||gcc at cookiesoft dot de

--- Comment #86 from Manuel López-Ibáñez  ---
*** Bug 87365 has been marked as a duplicate of this bug. ***

[Bug tree-optimization/18501] [6/7/8/9 Regression] Missing 'used uninitialized' warning (CCP)

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=18501

Manuel López-Ibáñez  changed:

   What|Removed |Added

 CC||lvenkatakumarchakka at gmail 
dot c
   ||om

--- Comment #85 from Manuel López-Ibáñez  ---
*** Bug 69578 has been marked as a duplicate of this bug. ***

[Bug tree-optimization/18501] [6/7/8/9 Regression] Missing 'used uninitialized' warning (CCP)

[mickey.veksler at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=18501

Michael Veksler  changed:

   What|Removed |Added

 CC||mickey.veksler at gmail dot com

--- Comment #84 from Michael Veksler  ---
Ping.  
At least -Wmaybe-uninitialized should emit warnings.

This still happens on the trunk (gcc version 9.0.0 20180723 (experimental)
(GCC-Explorer-Build)) :
  int f(int a)
  {
int ret;
if (a) {
ret = 1;
}

return ret;
  }

No warning, including with  -Wmaybe-uninitialized. All other compilers warn
about this (at least clang and Visual C++).