Changes in null_objc_pointer.mm

5e9746f5 - DR583, DR1512: Implement a rewrite to C++'s 'composite pointer type' rules.

Fri, 21 Oct 2016 22:00:42 +0000

DR583, DR1512: Implement a rewrite to C++'s 'composite pointer type' rules.This has two significant effects:1) Direct relational comparisons between null pointer constants (0 and nullopt) and pointers are now ill-formed. This was always the case for C, and it appears that C++ only ever permitted by accident. For instance, cases like nullptr < &a are now rejected.2) Comparisons and conditional operators between differently-cv-qualified pointer types now work, and produce a composite type that both source pointer types can convert to (when possible). For instance, comparison between 'int **' and 'const int **' is now valid, and uses an intermediate type of 'const int *const *'.Clang previously supported #2 as an extension.We do not accept the cases in #1 as an extension. I've tested a fair amount ofcode to check that this doesn't break it, but if it turns out that someone isrelying on this, we can easily add it back as an extension.This is a re-commit of r284800.llvm-svn: 284890 List of files: /llvm-project-15.0.7/clang/test/SemaObjCXX/null_objc_pointer.mm

41189656 - Revert "DR583, DR1512: Implement a rewrite to C++'s 'composite pointer type' rules."

Fri, 21 Oct 2016 08:03:49 +0000

Revert "DR583, DR1512: Implement a rewrite to C++'s 'composite pointer type' rules."This reverts commit r284800, as it failed all ARM/AArch64 bots.llvm-svn: 284811 List of files: /llvm-project-15.0.7/clang/test/SemaObjCXX/null_objc_pointer.mm

0c1c53e3 - DR583, DR1512: Implement a rewrite to C++'s 'composite pointer type' rules.

Fri, 21 Oct 2016 02:36:37 +0000

DR583, DR1512: Implement a rewrite to C++'s 'composite pointer type' rules.This has two significant effects:1) Direct relational comparisons between null pointer constants (0 and nullopt) and pointers are now ill-formed. This was always the case for C, and it appears that C++ only ever permitted by accident. For instance, cases like nullptr < &a are now rejected.2) Comparisons and conditional operators between differently-cv-qualified pointer types now work, and produce a composite type that both source pointer types can convert to (when possible). For instance, comparison between 'int **' and 'const int **' is now valid, and uses an intermediate type of 'const int *const *'.Clang previously supported #2 as an extension.We do not accept the cases in #1 as an extension. I've tested a fair amount ofcode to check that this doesn't break it, but if it turns out that someone isrelying on this, we can easily add it back as an extension.llvm-svn: 284800 List of files: /llvm-project-15.0.7/clang/test/SemaObjCXX/null_objc_pointer.mm

c6e68daa - Prior to adding the new "expected-no-diagnostics" directive to VerifyDiagnosticConsumer, make the necessary adjustment to 580 test-cases which will henceforth require this new directive.

Fri, 19 Oct 2012 12:44:48 +0000

Prior to adding the new "expected-no-diagnostics" directive to VerifyDiagnosticConsumer, make the necessary adjustment to 580 test-cases which will henceforth require this new directive.llvm-svn: 166280 List of files: /llvm-project-15.0.7/clang/test/SemaObjCXX/null_objc_pointer.mm

fc51bc1c - Put the new warning from revision 133196 on NULL arithmetic behind the flag -Wnull-arthimetic and set to DefaultIgnore. A few edge cases need to be worked out before this can be set to default.

Fri, 17 Jun 2011 20:35:48 +0000

Put the new warning from revision 133196 on NULL arithmetic behind the flag -Wnull-arthimetic and set to DefaultIgnore. A few edge cases need to be worked out before this can be set to default.llvm-svn: 133287 List of files: /llvm-project-15.0.7/clang/test/SemaObjCXX/null_objc_pointer.mm

701fb36b - Add a new warning when a NULL constant is used in arithmetic operations. The warning will fire on cases such as:

Thu, 16 Jun 2011 21:36:56 +0000

Add a new warning when a NULL constant is used in arithmetic operations. The warning will fire on cases such as:int x = 1 + NULL;llvm-svn: 133196 List of files: /llvm-project-15.0.7/clang/test/SemaObjCXX/null_objc_pointer.mm