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Make sure we get extension diagnostics for GCC's complex extensions. 

Now we emit the following when -pedantic-errors is enabled...

[dylan:~/llvm/tools/clang] admin% ../../Debug/bin/clang complex.c -pedantic-errors
complex.c:4:3: error: ISO C does not support '++'/'--' on complex integer types
  ++x;
  ^ ~
complex.c:9:7: error: ISO C does not support '~' for complex conjugation
  X = ~Y;
      ^
complex.c:10:7: error: ISO C does not support '~' for complex conjugation
  x = ~y;
      ^

llvm-svn: 41362
This commit is contained in:
Steve Naroff 2007-08-24 17:20:07 +00:00
parent 100198f3f7
commit 9d13917cff
2 changed files with 25 additions and 11 deletions
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22
clang/Sema/SemaExpr.cpp
View File

@ -1256,19 +1256,24 @@ QualType Sema::CheckIncrementDecrementOperand(Expr *op, SourceLocation OpLoc) {
QualType resType = op->getType();
assert(!resType.isNull() && "no type for increment/decrement expression");
// C99 6.5.2.4p1: C99 does not support ++/-- on complex types.
// We allow complex as a GCC extension.
// C99 6.5.2.4p1: We allow complex as a GCC extension.
if (const PointerType *pt = dyn_cast<PointerType>(resType)) {
if (!pt->getPointeeType()->isObjectType()) { // C99 6.5.2.4p2, 6.5.6p2
Diag(OpLoc, diag::err_typecheck_arithmetic_incomplete_type,
resType.getAsString(), op->getSourceRange());
return QualType();
}
} else if (!resType->isRealType() && !resType->isComplexType()) {
} else if (!resType->isRealType()) {
if (resType->isComplexType())
// C99 does not support ++/-- on complex types.
Diag(OpLoc, diag::ext_integer_increment_complex,
resType.getAsString(), op->getSourceRange());
else {
Diag(OpLoc, diag::err_typecheck_illegal_increment_decrement,
resType.getAsString(), op->getSourceRange());
return QualType();
}
}
// At this point, we know we have a real, complex or pointer type.
// Now make sure the operand is a modifiable lvalue.
Expr::isModifiableLvalueResult mlval = op->isModifiableLvalue();
@ -1555,11 +1560,16 @@ Action::ExprResult Sema::ParseUnaryOp(SourceLocation OpLoc, tok::TokenKind Op,
case UnaryOperator::Not: // bitwise complement
UsualUnaryConversions(Input);
resultType = Input->getType();
// C99 6.5.3.3p1. C99 does not support '~' for complex conjugation.
// We allow complex as a GCC extension.
if (!resultType->isIntegerType() && !resultType->isComplexType())
// C99 6.5.3.3p1. We allow complex as a GCC extension.
if (!resultType->isIntegerType()) {
if (resultType->isComplexType())
// C99 does not support '~' for complex conjugation.
Diag(OpLoc, diag::ext_integer_complement_complex,
resultType.getAsString());
else
return Diag(OpLoc, diag::err_typecheck_unary_expr,
resultType.getAsString());
}
break;
case UnaryOperator::LNot: // logical negation
// Unlike +/-/~, integer promotions aren't done here (C99 6.5.3.3p5).

4
clang/include/clang/Basic/DiagnosticKinds.def
View File

@ -275,6 +275,10 @@ DIAG(ext_integer_complex, EXTENSION,
"ISO C does not support complex integer types")
DIAG(ext_thread_before, EXTENSION,
"'__thread' before 'static'")
DIAG(ext_integer_increment_complex, EXTENSION,
"ISO C does not support '++'/'--' on complex integer types")
DIAG(ext_integer_complement_complex, EXTENSION,
"ISO C does not support '~' for complex conjugation")
DIAG(ext_empty_struct_union_enum, EXTENSION,
"use of empty %0 extension")