Revert r109428 "Hoist argument type checking into CheckFormatHandler. This is prep for scanf format"

Got errors about ASTContext being undefined with Visual Studio 2010.

llvm-svn: 109491

1 files changed, 41 insertions, 53 deletions

diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 1b689499edf..03ca084dd89 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -1174,11 +1174,6 @@ protected:
                     const analyze_format_string::ConversionSpecifier &CS,
                     const char *startSpecifier, unsigned specifierLen,
                     unsigned argIndex);
-  
-  void CheckArgType(const analyze_format_string::FormatSpecifier &FS,
-                    const analyze_format_string::ConversionSpecifier &CS,
-                    const char *startSpecifier, unsigned specifierLen,
-                    unsigned argIndex);
 };
 }
 
@@ -1304,52 +1299,6 @@ CheckFormatHandler::CheckNumArgs(
   return true;
 }
 
-void CheckFormatHandler::CheckArgType(
-  const analyze_format_string::FormatSpecifier &FS,
-  const analyze_format_string::ConversionSpecifier &CS,
-  const char *startSpecifier, unsigned specifierLen, unsigned argIndex) {
-  
-  const Expr *Ex = getDataArg(argIndex);
-  const analyze_format_string::ArgTypeResult &ATR = FS.getArgType(S.Context);
-
-  if (ATR.isValid() && !ATR.matchesType(S.Context, Ex->getType())) {
-    // Check if we didn't match because of an implicit cast from a 'char'
-    // or 'short' to an 'int'.  This is done because scanf/printf are varargs
-    // functions.
-    if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Ex))
-      if (ICE->getType() == S.Context.IntTy)
-        if (ATR.matchesType(S.Context, ICE->getSubExpr()->getType()))
-          return;
-    
-    if (const analyze_printf::PrintfSpecifier *PFS =
-        dyn_cast<analyze_printf::PrintfSpecifier>(&FS)) {
-      // We may be able to offer a FixItHint if it is a supported type.
-      analyze_printf::PrintfSpecifier fixedFS(*PFS);
-      if (fixedFS.fixType(Ex->getType())) {
-        // Get the fix string from the fixed format specifier
-        llvm::SmallString<128> buf;
-        llvm::raw_svector_ostream os(buf);
-        fixedFS.toString(os);
-      
-        S.Diag(getLocationOfByte(CS.getStart()),
-               diag::warn_printf_conversion_argument_type_mismatch)
-          << ATR.getRepresentativeType(S.Context) << Ex->getType()
-          << getSpecifierRange(startSpecifier, specifierLen)
-        << Ex->getSourceRange()
-        << FixItHint::CreateReplacement(
-                getSpecifierRange(startSpecifier, specifierLen), os.str());
-      }
-      else {
-        S.Diag(getLocationOfByte(CS.getStart()),
-               diag::warn_printf_conversion_argument_type_mismatch)
-          << ATR.getRepresentativeType(S.Context) << Ex->getType()
-          << getSpecifierRange(startSpecifier, specifierLen)
-          << Ex->getSourceRange();
-      }
-    }
-  }
-}
-
 //===--- CHECK: Printf format string checking ------------------------------===//
 
 namespace {
@@ -1621,8 +1570,47 @@ CheckPrintfHandler::HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier
   if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex))
     return false;
 
-  CheckArgType(FS, CS, startSpecifier, specifierLen, argIndex);
-  
+  // Now type check the data expression that matches the
+  // format specifier.
+  const Expr *Ex = getDataArg(argIndex);
+  const analyze_printf::ArgTypeResult &ATR = FS.getArgType(S.Context);
+  if (ATR.isValid() && !ATR.matchesType(S.Context, Ex->getType())) {
+    // Check if we didn't match because of an implicit cast from a 'char'
+    // or 'short' to an 'int'.  This is done because printf is a varargs
+    // function.
+    if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Ex))
+      if (ICE->getType() == S.Context.IntTy)
+        if (ATR.matchesType(S.Context, ICE->getSubExpr()->getType()))
+          return true;
+
+    // We may be able to offer a FixItHint if it is a supported type.
+    PrintfSpecifier fixedFS = FS;
+    bool success = fixedFS.fixType(Ex->getType());
+
+    if (success) {
+      // Get the fix string from the fixed format specifier
+      llvm::SmallString<128> buf;
+      llvm::raw_svector_ostream os(buf);
+      fixedFS.toString(os);
+
+      S.Diag(getLocationOfByte(CS.getStart()),
+          diag::warn_printf_conversion_argument_type_mismatch)
+        << ATR.getRepresentativeType(S.Context) << Ex->getType()
+        << getSpecifierRange(startSpecifier, specifierLen)
+        << Ex->getSourceRange()
+        << FixItHint::CreateReplacement(
+            getSpecifierRange(startSpecifier, specifierLen),
+            os.str());
+    }
+    else {
+      S.Diag(getLocationOfByte(CS.getStart()),
+             diag::warn_printf_conversion_argument_type_mismatch)
+        << ATR.getRepresentativeType(S.Context) << Ex->getType()
+        << getSpecifierRange(startSpecifier, specifierLen)
+        << Ex->getSourceRange();
+    }
+  }
+
   return true;
 }