[Bug c++/114379] stringop-overflow warning on C++ code with -O2 (or -O1 -fexpensive-optimizations)

2024-03-18 Thread redi at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114379

Jonathan Wakely  changed:

   What|Removed |Added

   Last reconfirmed||2024-03-18
 Ever confirmed|0   |1
 Status|UNCONFIRMED |NEW

--- Comment #2 from Jonathan Wakely  ---
(In reply to Richard Biener from comment #1)
> The diagnostic hints at jump threading producing an access to nullptr.

Yes, I saw this happening with std::atomic recently too - I can't remember if I
still have the code to reproduce it.

[Bug c++/114379] stringop-overflow warning on C++ code with -O2 (or -O1 -fexpensive-optimizations)

2024-03-18 Thread rguenth at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114379

Richard Biener  changed:

   What|Removed |Added

   Keywords||diagnostic
 Blocks||88443

--- Comment #1 from Richard Biener  ---
The diagnostic hints at jump threading producing an access to nullptr.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88443
[Bug 88443] [meta-bug] bogus/missing -Wstringop-overflow warnings