Author: rnk Date: Tue Jan 15 13:24:55 2019 New Revision: 351249 URL: http://llvm.org/viewvc/llvm-project?rev=351249&view=rev Log: [clang-cl] Alias /Zc:alignedNew[-] to -f[no-]aligned-allocation
Implements PR40180. clang-cl has one minor behavior difference with cl with this change. Clang allows the user to enable the C++17 feature of aligned allocation without enabling all of C++17, but MSVC will not call the aligned allocation overloads unless -std:c++17 is passed. While our behavior is technically incompatible, it would require making driver mode specific changes to match MSVC precisely, and clang's behavior is useful because it allows people to experiment with new C++17 features individually. Therefore, I plan to leave it as is. Modified: cfe/trunk/include/clang/Driver/CLCompatOptions.td cfe/trunk/test/Driver/cl-zc.cpp Modified: cfe/trunk/include/clang/Driver/CLCompatOptions.td URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/CLCompatOptions.td?rev=351249&r1=351248&r2=351249&view=diff ============================================================================== --- cfe/trunk/include/clang/Driver/CLCompatOptions.td (original) +++ cfe/trunk/include/clang/Driver/CLCompatOptions.td Tue Jan 15 13:24:55 2019 @@ -207,6 +207,12 @@ def _SLASH_Zc_sizedDealloc : CLFlag<"Zc: def _SLASH_Zc_sizedDealloc_ : CLFlag<"Zc:sizedDealloc-">, HelpText<"Disable C++14 sized global deallocation functions">, Alias<fno_sized_deallocation>; +def _SLASH_Zc_alignedNew : CLFlag<"Zc:alignedNew">, + HelpText<"Enable C++17 aligned allocation functions">, + Alias<faligned_allocation>; +def _SLASH_Zc_alignedNew_ : CLFlag<"Zc:alignedNew-">, + HelpText<"Disable C++17 aligned allocation functions">, + Alias<fno_aligned_allocation>; def _SLASH_Zc_strictStrings : CLFlag<"Zc:strictStrings">, HelpText<"Treat string literals as const">, Alias<W_Joined>, AliasArgs<["error=c++11-compat-deprecated-writable-strings"]>; Modified: cfe/trunk/test/Driver/cl-zc.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/cl-zc.cpp?rev=351249&r1=351248&r2=351249&view=diff ============================================================================== --- cfe/trunk/test/Driver/cl-zc.cpp (original) +++ cfe/trunk/test/Driver/cl-zc.cpp Tue Jan 15 13:24:55 2019 @@ -18,6 +18,12 @@ // RUN: %clang_cl /c -### /Zc:sizedDealloc- -- %s 2>&1 | FileCheck -check-prefix=SIZED-DEALLOC-OFF %s // SIZED-DEALLOC-OFF-NOT: "-fsized-deallocation" +// RUN: %clang_cl /c /std:c++17 -### /Zc:alignedNew -- %s 2>&1 | FileCheck -check-prefix=ALIGNED-NEW-ON %s +// ALIGNED-NEW-ON: "-faligned-allocation" + +// RUN: %clang_cl /c /std:c++17 -### /Zc:alignedNew- -- %s 2>&1 | FileCheck -check-prefix=ALIGNED-NEW-OFF %s +// ALIGNED-NEW-OFF-NOT: "-faligned-allocation" + // RUN: %clang_cl /c -### -- %s 2>&1 | FileCheck -check-prefix=STRICTSTRINGS-DEFAULT %s // STRICTSTRINGS-DEFAULT-NOT: -Werror=c++11-compat-deprecated-writable-strings // RUN: %clang_cl /c -### /Zc:strictStrings -- %s 2>&1 | FileCheck -check-prefix=STRICTSTRINGS-ON %s _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits