llvm-project.git/clang/test/CodeGen/offsetof.c, branch users/nico/python-2 Unnamed repository; edit this file 'description' to name the repository. Diagnose extensions in 'offsetof' 2023-01-18T13:51:21+00:00 Aaron Ballman aaron@aaronballman.com 2023-01-18T13:49:45+00:00 e7300e75b51a7e7d4e81975b4be7a6c65f9a8286 https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2350.htm made very clear that it is an UB having type definitions with in offsetof. Clang supports defining a type as the first argument as a conforming extension due to how many projects use the construct in C99 and earlier to calculate the alignment of a type. GCC also supports defining a type as the first argument. This adds extension warnings and documentation for the functionality Clang explicitly supports. Fixes #57065 Reverts the revert of 39da55e8f548a11f7dadefa73ea73d809a5f1729 Co-authored-by: Yingchi Long <i@lyc.dev> Co-authored-by: Aaron Ballman <aaron@aaronballman.com> Differential Revision: https://reviews.llvm.org/D133574 
https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2350.htm made very
clear that it is an UB having type definitions with in offsetof.
Clang supports defining a type as the first argument as a conforming
extension due to how many projects use the construct in C99 and earlier
to calculate the alignment of a type. GCC also supports defining a type
as the first argument.

This adds extension warnings and documentation for the functionality
Clang explicitly supports.

Fixes #57065
Reverts the revert of 39da55e8f548a11f7dadefa73ea73d809a5f1729

Co-authored-by: Yingchi Long <i@lyc.dev>
Co-authored-by: Aaron Ballman <aaron@aaronballman.com>

Differential Revision: https://reviews.llvm.org/D133574
Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. 2009-12-15T20:14:24+00:00 Daniel Dunbar daniel@zuster.org 2009-12-15T20:14:24+00:00 8fbe78f6fc7b41d1a4228c126fcb522131150518 - This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446 
 - This is designed to make it obvious that %clang_cc1 is a "test variable"
   which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it
   can be useful to redefine what gets run as 'clang -cc1' (for example, to set
   a default target).

llvm-svn: 91446
Rename clang to clang-cc. 2009-03-24T02:24:46+00:00 Daniel Dunbar daniel@zuster.org 2009-03-24T02:24:46+00:00 a45cf5b6b0790e829ad47cf946c149d8f1007324 Tests and drivers updated, still need to shuffle dirs. llvm-svn: 67602 
Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602
Fix for PR2910: implement CodeGen for non-constant offsetof. 2009-01-24T22:38:55+00:00 Eli Friedman eli.friedman@gmail.com 2009-01-24T22:38:55+00:00 8549e5dcc868f1c6c75ecd11bd8762a018af9f1d Note that there are still other issues in this area; see PR3396. llvm-svn: 62942 
Note that there are still other issues in this area; see PR3396.

llvm-svn: 62942