search for: fplacate

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2018 Apr 20
0
[cfe-dev] RFC: Implementing -fno-delete-null-pointer-checks in clang
On 4/20/18, James Y Knight wrote: > > > Yep. "-fnull-pointer-is-valid" has been suggested before. > -fplacate-linux-kernel-developers ? Csaba -- You can get very substantial performance improvements by not doing the right thing. - Scott Meyers, An Effective C++11/14 Sampler So if you're looking for a completely portable, 100% standards-conformat way to get the wrong information: this is what you w...
2018 Apr 20
3
[cfe-dev] RFC: Implementing -fno-delete-null-pointer-checks in clang
On Wed, Apr 18, 2018 at 3:54 PM Tim Northover via llvm-dev < llvm-dev at lists.llvm.org> wrote: > > Despite the name, the flag actually has rather straightforward semantics > > from the compiler's perspective. From the gcc docs for > > -fdelete-null-pointer-checks: "Assume that programs cannot safely > > dereference null pointers, and that no code or data
2018 Apr 21
2
[cfe-dev] RFC: Implementing -fno-delete-null-pointer-checks in clang
> On Apr 20, 2018, at 2:06 AM, Csaba Raduly via cfe-dev <cfe-dev at lists.llvm.org> wrote: > > On 4/20/18, James Y Knight wrote: >> >> >> Yep. "-fnull-pointer-is-valid" has been suggested before. >> > > -fplacate-linux-kernel-developers ? Please, lets keep this discussion on topic and productive. The semantics described upstream of (the inverse of) "Assume that programs cannot safely dereference null pointers, and that no code or data element resides at address zero.” is entirely reasonable. -Chris
2018 Apr 22
0
[cfe-dev] RFC: Implementing -fno-delete-null-pointer-checks in clang
...>> On Apr 20, 2018, at 2:06 AM, Csaba Raduly via cfe-dev <cfe-dev at lists.llvm.org> wrote: >> >> On 4/20/18, James Y Knight wrote: >>> >>> >>> Yep. "-fnull-pointer-is-valid" has been suggested before. >>> >> >> -fplacate-linux-kernel-developers ? > > Please, lets keep this discussion on topic and productive. The semantics described upstream of (the inverse of) "Assume that programs cannot safely dereference null pointers, and that no code or data element resides at address zero.” is entirely reasonable...