search for: fallthrough

There is a new fallthrough pseudo-keyword macro that can be used to replace the various /* fallthrough */ style comments that are used to indicate a case label code block is intended to fallthrough to the next case label block. See commit 294f69e662d1 ("compiler_attributes.h: Add 'fallthrough' pseudo keyword fo...

There is a new fallthrough pseudo-keyword macro that can be used to replace the various /* fallthrough */ style comments that are used to indicate a case label code block is intended to fallthrough to the next case label block. See commit 294f69e662d1 ("compiler_attributes.h: Add 'fallthrough' pseudo keyword fo...

There is a new fallthrough pseudo-keyword macro that can be used to replace the various /* fallthrough */ style comments that are used to indicate a case label code block is intended to fallthrough to the next case label block. See commit 294f69e662d1 ("compiler_attributes.h: Add 'fallthrough' pseudo keyword fo...

There is a new fallthrough pseudo-keyword macro that can be used to replace the various /* fallthrough */ style comments that are used to indicate a case label code block is intended to fallthrough to the next case label block. See commit 294f69e662d1 ("compiler_attributes.h: Add 'fallthrough' pseudo keyword fo...

There is a new fallthrough pseudo-keyword macro that can be used to replace the various /* fallthrough */ style comments that are used to indicate a case label code block is intended to fallthrough to the next case label block. See commit 294f69e662d1 ("compiler_attributes.h: Add 'fallthrough' pseudo keyword fo...

Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars at kernel.org> --- drivers/gpu/drm/nouveau/dispn...

Hi. I upgraded my main build host and the clang -Werror builds started failing. This is because clang 10's -Wimplicit-fallthrough doesn't understand /* FALLTHROUGH */ but rather requires __attribute__((fallthrough)): clang -Wall -O2 [...] -Wimplicit-fallthrough [...] -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_DEFAULT_SOURCE -DHAVE_CONFIG_H -c /openbsd-compat/base64.c openbsd-compat/base64.c:284:3: error: unannotated fall-throu...

fallthrough to a separate case/default label break; isn't very readable. Convert pseudo-keyword fallthrough; statements to a simple break; when the next label is case or default and the only statement in the next label block is break; Found using: $ grep-2.5.4 -rP --include=*.[ch] -n "fallthrough;(...

On Wed, 8 Jul 2020 at 03:31, Gustavo A. R. Silva <gustavoars at kernel.org> wrote: > > Replace the existing /* fall through */ comments and its variants with > the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary > fall-through markings when it is the case. I really like this! I was not a fan of explicitly marking those with comments. Thank you, taken in my tree. Ben. > > [1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implici...

Hi llvmdev, llvm-commits, There was a discussion on this topic a while ago, and now I've decided to make a formal proposal and post it here. I propose to add the LLVM_FALLTHROUGH macro for specifying intended fall-through locations between switch cases. *INTRODUCTION* The switch construct of C/C++ languages allows fall-throughs between switch labels when control flow is not directed elsewhere by a break, return or continue statement or other ways. There are certain coding...

...b/usr/klibc/zlib/infback.c index 455dbc9ee843..be5eace3ad1a 100644 --- a/usr/klibc/zlib/infback.c +++ b/usr/klibc/zlib/infback.c @@ -460,7 +460,7 @@ void FAR *out_desc; } Tracev((stderr, "inflate: codes ok\n")); state->mode = LEN; - + /* fallthrough */ case LEN: /* use inflate_fast() if we have enough input and output */ if (have >= 6 && left >= 258) { diff --git a/usr/klibc/zlib/inflate.c b/usr/klibc/zlib/inflate.c index 792fdee8e9c7..0a706208cf4c 100644 --- a/usr/klibc/zlib/inflate.c +++ b/usr...

In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. This patch fixes the following warning: drivers/gpu/drm/nouveau/nouveau_bo.c:1434:53: warning: this statement may fall through [-Wimplicit-fallthrough=] Warning level 3 was used: -Wimplicit-fallthrough=3 This patch is part of the ongoin...

...8:53 PM, Cameron McInally <cameron.mcinally at nyu.edu>wrote: > Hey Alex, > > Sorry if this is a silly question... are you asking if anyone "wants the > functionality proposed" or "wants to write the code for the functionality > proposed"? > *-Wimplicit-fallthrough* diagnostic is already implemented, and the patch in this thread is a portability macro for *[[clang::fallthrough]]*attribute (which is also implemented, of course). I only need an approval from community to add this macro and replace comment-only fall-through annotations with the *LLVM_FALLTHROUGH...

Hi all, This series aims to fix almost all remaining fall-through warnings in order to enable -Wimplicit-fallthrough for Clang. In preparation to enable -Wimplicit-fallthrough for Clang, explicitly add multiple break/goto/return/fallthrough statements instead of just letting the code fall through to the next case. Notice that in order to enable -Wimplicit-fallthrough for Clang, this change[1] is meant to be rev...

Hi all, This series aims to fix almost all remaining fall-through warnings in order to enable -Wimplicit-fallthrough for Clang. In preparation to enable -Wimplicit-fallthrough for Clang, explicitly add multiple break/goto/return/fallthrough statements instead of just letting the code fall through to the next case. Notice that in order to enable -Wimplicit-fallthrough for Clang, this change[1] is meant to be rev...

Hi all, This series aims to fix almost all remaining fall-through warnings in order to enable -Wimplicit-fallthrough for Clang. In preparation to enable -Wimplicit-fallthrough for Clang, explicitly add multiple break/goto/return/fallthrough statements instead of just letting the code fall through to the next case. Notice that in order to enable -Wimplicit-fallthrough for Clang, this change[1] is meant to be rev...

...ok wrote: > > On Fri, Nov 20, 2020 at 10:53:44AM -0800, Jakub Kicinski wrote: > > > On Fri, 20 Nov 2020 12:21:39 -0600 Gustavo A. R. Silva wrote: > > > > This series aims to fix almost all remaining fall-through warnings in > > > > order to enable -Wimplicit-fallthrough for Clang. > > > > > > > > In preparation to enable -Wimplicit-fallthrough for Clang, explicitly > > > > add multiple break/goto/return/fallthrough statements instead of just > > > > letting the code fall through to the next case. > > > >...

...ok wrote: > > On Fri, Nov 20, 2020 at 10:53:44AM -0800, Jakub Kicinski wrote: > > > On Fri, 20 Nov 2020 12:21:39 -0600 Gustavo A. R. Silva wrote: > > > > This series aims to fix almost all remaining fall-through warnings in > > > > order to enable -Wimplicit-fallthrough for Clang. > > > > > > > > In preparation to enable -Wimplicit-fallthrough for Clang, explicitly > > > > add multiple break/goto/return/fallthrough statements instead of just > > > > letting the code fall through to the next case. > > > >...

...ok wrote: > > On Fri, Nov 20, 2020 at 10:53:44AM -0800, Jakub Kicinski wrote: > > > On Fri, 20 Nov 2020 12:21:39 -0600 Gustavo A. R. Silva wrote: > > > > This series aims to fix almost all remaining fall-through warnings in > > > > order to enable -Wimplicit-fallthrough for Clang. > > > > > > > > In preparation to enable -Wimplicit-fallthrough for Clang, explicitly > > > > add multiple break/goto/return/fallthrough statements instead of just > > > > letting the code fall through to the next case. > > > >...

I've ran across an issue in BranchFolding.cpp where it is incorrectly folding a branch to the wrong fallthrough location. This is in LLVM 2.4 and seems to be in 2.5 also. The code in question is: void BranchFolder::OptimizeBlock(MachineBasicBlock *MBB) { MachineFunction::iterator FallThrough = MBB; ++FallThrough; // If this block is empty, make everyone use its fall-through, not the block /...