diff options
Diffstat (limited to 'lib/Sema/SemaChecking.cpp')
| -rw-r--r-- | lib/Sema/SemaChecking.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/Sema/SemaChecking.cpp b/lib/Sema/SemaChecking.cpp index 38f3f2df47..f10c8a17fc 100644 --- a/lib/Sema/SemaChecking.cpp +++ b/lib/Sema/SemaChecking.cpp @@ -1151,10 +1151,14 @@ CheckPrintfHandler::HandleAmount(const analyze_printf::OptionalAmount &Amt, } // Type check the data argument. It should be an 'int'. + // Although not in conformance with C99, we also allow the argument to be + // an 'unsigned int' as that is a reasonably safe case. GCC also + // doesn't emit a warning for that case. const Expr *Arg = getDataArg(NumConversions); QualType T = Arg->getType(); - const BuiltinType *BT = T->getAs<BuiltinType>(); - if (!BT || BT->getKind() != BuiltinType::Int) { + const BuiltinType *BT = T->getAs<BuiltinType>(); + if (!BT || (BT->getKind() != BuiltinType::Int && + BT->getKind() != BuiltinType::UInt)) { S.Diag(getLocationOfByte(Amt.getStart()), BadTypeDiag) << T << getFormatSpecifierRange(startSpecifier, specifierLen) |