llvm-project.git/clang/test/CodeGen/pointer-arithmetic.c, branch main Unnamed repository; edit this file 'description' to name the repository. Strengthen -Wint-conversion to default to an error 2022-07-22T19:24:54+00:00 Aaron Ballman aaron@aaronballman.com 2022-07-22T19:24:54+00:00 7068aa98412ade19a34b7ed126f4669f581b2311 Clang has traditionally allowed C programs to implicitly convert integers to pointers and pointers to integers, despite it not being valid to do so except under special circumstances (like converting the integer 0, which is the null pointer constant, to a pointer). In C89, this would result in undefined behavior per 3.3.4, and in C99 this rule was strengthened to be a constraint violation instead. Constraint violations are most often handled as an error. This patch changes the warning to default to an error in all C modes (it is already an error in C++). This gives us better security posture by calling out potential programmer mistakes in code but still allows users who need this behavior to use -Wno-error=int-conversion to retain the warning behavior, or -Wno-int-conversion to silence the diagnostic entirely. Differential Revision: https://reviews.llvm.org/D129881 
Clang has traditionally allowed C programs to implicitly convert
integers to pointers and pointers to integers, despite it not being
valid to do so except under special circumstances (like converting the
integer 0, which is the null pointer constant, to a pointer). In C89,
this would result in undefined behavior per 3.3.4, and in C99 this rule
was strengthened to be a constraint violation instead. Constraint
violations are most often handled as an error.

This patch changes the warning to default to an error in all C modes
(it is already an error in C++). This gives us better security posture
by calling out potential programmer mistakes in code but still allows
users who need this behavior to use -Wno-error=int-conversion to retain
the warning behavior, or -Wno-int-conversion to silence the diagnostic
entirely.

Differential Revision: https://reviews.llvm.org/D129881
Congruent diagnostic for void* arithmetic. 2010-09-13T06:50:07+00:00 Abramo Bagnara abramo.bagnara@gmail.com 2010-09-13T06:50:07+00:00 3aabb4b452e563a382543f3d191ca3d1c036293e llvm-svn: 113740 
llvm-svn: 113740
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
eliminate some random .ll file outputs 2009-01-27T18:56:08+00:00 Chris Lattner sabre@nondot.org 2009-01-27T18:56:08+00:00 75441a3870fdd29668513b6978798f9d223e78c5 llvm-svn: 63117 
llvm-svn: 63117
Handle pointer arithmetic on function pointers. 2009-01-23T18:51:09+00:00 Daniel Dunbar daniel@zuster.org 2009-01-23T18:51:09+00:00 42a8cd37b23e6482f7a6f4c5264d0d39d680142e - <rdar://problem/6518844> Clang-generated bitcode crashes LLVM while compiling function pointer addition expression llvm-svn: 62857 
 - <rdar://problem/6518844> Clang-generated bitcode crashes LLVM while compiling function pointer addition expression

llvm-svn: 62857
Update a number of CodeGen tests to not create .ll files in the test 2008-08-21T02:51:29+00:00 Daniel Dunbar daniel@zuster.org 2008-08-21T02:51:29+00:00 19d84c3c51766ea618564af439188f349a4e87e8 directory. - Removed .ll from the svn:ignore lists to try and prevent this. - Added svn:ignore on test/Misc/Output llvm-svn: 55104 
directory.
 - Removed .ll from the svn:ignore lists to try and prevent this.
 - Added svn:ignore on test/Misc/Output

llvm-svn: 55104
Remove broken assert from CodeGen. Better check is done in Sema. 2007-12-26T05:21:37+00:00 Seo Sanghyeon sanxiyn@gmail.com 2007-12-26T05:21:37+00:00 acb00f4a73f2ff4e5020b01eb9fbb06defc2612b llvm-svn: 45358 
llvm-svn: 45358
Ignore typedefs in pointer arithmetic codegen. 2007-12-03T06:23:43+00:00 Seo Sanghyeon sanxiyn@gmail.com 2007-12-03T06:23:43+00:00 3d072bea09eac989a4cb231dca74d9816c93f70b llvm-svn: 44529 
llvm-svn: 44529