7 Commits

Author	SHA1	Message	Date
James Clarke	67f542aba7	[Diagnostics] Silence -Wsizeof-array-div for character buffers ... Summary: Character buffers are sometimes used to represent a pool of memory that contains non-character objects, due to them being synonymous with a stream of bytes on almost all modern architectures. Often, when interacting with hardware devices, byte buffers are therefore used as an intermediary and so we can end Character buffers are sometimes used to represent a pool of memory that contains non-character objects, due to them being synonymous with a stream of bytes on almost all modern architectures. Often, when interacting with hardware devices, byte buffers are therefore used as an intermediary and so we can end up generating lots of false-positives. Moreover, due to the ability of character pointers to alias non-character pointers, the strict aliasing violations that would generally be implied by the calculations caught by the warning (if the calculation itself is in fact correct) do not apply here, and so although the length calculation may be wrong, that is the only possible issue. Reviewers: rsmith, xbolva00, thakis Reviewed By: xbolva00, thakis Subscribers: thakis, lebedev.ri, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D68526 llvm-svn: 374035	2019-10-08 11:34:02 +00:00
David Bolvansky	116e6cf36e	[Diagnostics] Avoid -Wsizeof-array-div when dividing the size of a nested array by the size of the deepest base type ... llvm-svn: 372600	2019-09-23 12:54:35 +00:00
David Bolvansky	b8185153f3	[Diagnostics] Added silence note for -Wsizeof-array-div; suggest extra parens ... llvm-svn: 371924	2019-09-14 19:38:55 +00:00
David Bolvansky	82d9e0e122	[NFC] Added triple to test file to avoid arm buildbots failures ... llvm-svn: 371646	2019-09-11 18:55:56 +00:00
David Bolvansky	3240ad4ced	[Diagnostics] Add -Wsizeof-array-div ... Summary: Clang version of https://www.viva64.com/en/examples/v706/ Reviewers: rsmith Differential Revision: https://reviews.llvm.org/D67287 llvm-svn: 371605	2019-09-11 10:59:47 +00:00
David Bolvansky	454e40eaf3	[NFCI] Unbreak buildbots ... llvm-svn: 371226	2019-09-06 16:30:44 +00:00
David Bolvansky	d1cc181d03	[NFC] Added new tests for r371222 ... llvm-svn: 371223	2019-09-06 16:18:18 +00:00