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Fix issue #388.

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Protect more against error recovery of bad built-in variable redeclarations.
This commit is contained in:
John Kessenich 2016-07-19 15:13:47 -06:00
parent 31a51becd2
commit f2cfe27021
3 changed files with 14 additions and 10 deletions
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13
glslang/MachineIndependent/ParseHelper.cpp
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@ -3175,12 +3175,13 @@ void TParseContext::arrayDimMerge(TType& type, const TArraySizes* sizes)
//
void TParseContext::declareArray(const TSourceLoc& loc, TString& identifier, const TType& type, TSymbol*& symbol, bool& newDeclaration)
{
if (! symbol) {
if (symbol == nullptr) {
bool currentScope;
symbol = symbolTable.find(identifier, nullptr, &currentScope);
if (symbol && builtInName(identifier) && ! symbolTable.atBuiltInLevel()) {
// bad shader (errors already reported) trying to redeclare a built-in name as an array
symbol = nullptr;
return;
}
if (symbol == nullptr || ! currentScope) {
@ -3213,7 +3214,7 @@ void TParseContext::declareArray(const TSourceLoc& loc, TString& identifier, con
// Process a redeclaration.
//
if (! symbol) {
if (symbol == nullptr) {
error(loc, "array variable name expected", identifier.c_str(), "");
return;
}
@ -4934,7 +4935,7 @@ TIntermNode* TParseContext::declareVariable(const TSourceLoc& loc, TString& iden
// Check for redeclaration of built-ins and/or attempting to declare a reserved name
bool newDeclaration = false; // true if a new entry gets added to the symbol table
TSymbol* symbol = redeclareBuiltinVariable(loc, identifier, type.getQualifier(), publicType.shaderQualifiers, newDeclaration);
if (! symbol)
if (symbol == nullptr)
reservedErrorCheck(loc, identifier);
inheritGlobalDefaults(type.getQualifier());
@ -4959,18 +4960,18 @@ TIntermNode* TParseContext::declareVariable(const TSourceLoc& loc, TString& iden
}
} else {
// non-array case
if (! symbol)
if (symbol == nullptr)
symbol = declareNonArray(loc, identifier, type, newDeclaration);
else if (type != symbol->getType())
error(loc, "cannot change the type of", "redeclaration", symbol->getName().c_str());
}
if (! symbol)
if (symbol == nullptr)
return nullptr;
// Deal with initializer
TIntermNode* initNode = nullptr;
if (symbol && initializer) {
if (symbol != nullptr && initializer) {
TVariable* variable = symbol->getAsVariable();
if (! variable) {
error(loc, "initializer requires a variable, not a member", identifier.c_str(), "");