From 229c9c115997141ad95632a0bf512eb68b86bd56 Mon Sep 17 00:00:00 2001 From: Galina Kistanova Date: Mon, 29 May 2017 01:34:26 +0000 Subject: Disabled implicit-fallthrough warnings for ConvertUTF.cpp. ConvertUTF.cpp has a little dependency on LLVM, and since the code extensively uses fall-through switches, I prefer disabling the warning for the whole file, rather than adding attributes for each case. llvm-svn: 304120 --- llvm/lib/Support/ConvertUTF.cpp | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'llvm/lib/Support/ConvertUTF.cpp') diff --git a/llvm/lib/Support/ConvertUTF.cpp b/llvm/lib/Support/ConvertUTF.cpp index 39fd218d3f0..aa9507c189e 100644 --- a/llvm/lib/Support/ConvertUTF.cpp +++ b/llvm/lib/Support/ConvertUTF.cpp @@ -53,6 +53,35 @@ #endif #include + +/* + * This code extensively uses fall-through switches. + * Keep the compiler from warning about that. + */ +#if defined(__clang__) && defined(__has_warning) +# if __has_warning("-Wimplicit-fallthrough") +# define ConvertUTF_DISABLE_WARNINGS \ + _Pragma("clang diagnostic push") \ + _Pragma("clang diagnostic ignored \"-Wimplicit-fallthrough\"") +# define ConvertUTF_RESTORE_WARNINGS \ + _Pragma("clang diagnostic pop") +# endif +#elif defined(__GNUC__) && __GNUC__ > 6 +# define ConvertUTF_DISABLE_WARNINGS \ + _Pragma("GCC diagnostic push") \ + _Pragma("GCC diagnostic ignored \"-Wimplicit-fallthrough\"") +# define ConvertUTF_RESTORE_WARNINGS \ + _Pragma("GCC diagnostic pop") +#endif +#ifndef ConvertUTF_DISABLE_WARNINGS +# define ConvertUTF_DISABLE_WARNINGS +#endif +#ifndef ConvertUTF_RESTORE_WARNINGS +# define ConvertUTF_RESTORE_WARNINGS +#endif + +ConvertUTF_DISABLE_WARNINGS + namespace llvm { static const int halfShift = 10; /* used for shifting by 10 bits */ @@ -708,3 +737,5 @@ ConversionResult ConvertUTF8toUTF32(const UTF8 **sourceStart, --------------------------------------------------------------------- */ } // namespace llvm + +ConvertUTF_RESTORE_WARNINGS -- cgit v1.2.3