en Copyright 2015 Java http://172.16.0.5:8080/history/llvm-project-15.0.7/clang/test/Sema/pragma-warning.cpp#e31899c7 Reland "[clang-cl] Accept `#pragma warning(disable : N)` for some N"This reverts commit 0cd9d8a48bdddb17de2c6388f9d775353f9acab9 andadds the changes described in https://reviews.llvm.org/D110668#3034461. List of files: /llvm-project-15.0.7/clang/test/Sema/pragma-warning.cpp Thu, 30 Sep 2021 18:41:58 +0000 Nico Weber <thakis@chromium.org> http://172.16.0.5:8080/history/llvm-project-15.0.7/clang/test/Sema/pragma-warning.cpp#b2de52be [clang-cl] Accept `#pragma warning(disable : N)` for some Nclang-cl maps /wdNNNN to -Wno-flags for a few warnings that mapcleanly from cl.exe concepts to clang concepts.This patch adds support for the same numbers to`#pragma warning(disable : NNNN)`. It also lets`#pragma warning(push)` and `#pragma warning(pop)` have an effect,since these are used together with `warning(disable)`.The optional numeric argument to `warning(push)` is ignored,as are the other non-`disable` `pragma warning()` arguments.(Supporting `error` would be easy, but we also don't support`/we`, and those should probably be added together.)The motivating example is that a bunch of code (including in LLVM)uses this idiom to locally disable warnings about calls to deprecatedfunctions in Windows-only code, and 4996 maps nicely to-Wno-deprecated-declarations: #pragma warning(push) #pragma warning(disable: 4996) f(); #pragma warning(pop)Implementation-wise:- Move `/wd` flag handling from Options.td to actual Driver-level code- Extract the function mapping cl.exe IDs to warning groups to the new file clang/lib/Basic/CLWarnings.cpp- Create a diag::Group enum so that CLWarnings.cpp can refer to existing groups by ID (and give DllexportExplicitInstantiationDecl a named group), and add a function to map a diag::Group to the spelling of it's associated commandline flag- Call that new function from PragmaWarningHandlerDifferential Revision: https://reviews.llvm.org/D110668 List of files: /llvm-project-15.0.7/clang/test/Sema/pragma-warning.cpp Tue, 28 Sep 2021 23:33:59 +0000 Nico Weber <thakis@chromium.org>