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Code Issues Wiki Activity

Fix cv-conversion, bug 213029.

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This commit is contained in:
Markus Schorn 2007-12-14 15:58:14 +00:00
parent ff426e5841
commit 0408d6e901
2 changed files with 44 additions and 6 deletions
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27
core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2Tests.java
View file

@ -4168,4 +4168,31 @@ public class AST2Tests extends AST2BaseTest {
StringBuffer buffer = getContents(1)[0];
parseAndCheckBindings(buffer.toString(), ParserLanguage.CPP);
}
// int* i= 0;
// void f1(const int**);
// void f2(int *const*);
// void f3(const int *const*);
//
// void test() {
// f1(&i); // forbidden
// f2(&i); // ok
// f3(&i); // ok
// }
public void testBug213029_cvConversion() throws Exception {
StringBuffer buffer = getContents(1)[0];
IASTTranslationUnit tu = parse( buffer.toString(), ParserLanguage.CPP, false );
CNameCollector col = new CNameCollector();
tu.accept(col);
Iterator i = col.nameList.iterator();
while (i.hasNext()) {
IASTName n = (IASTName) i.next();
if (n.isReference() && "f1".equals(n.toString())) {
assertTrue(n.resolveBinding() instanceof IProblemBinding);
}
else {
assertFalse(n.resolveBinding() instanceof IProblemBinding);
}
}
}
}

19
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java
View file

@ -3009,6 +3009,7 @@ public class CPPSemantics {
IType s = cost.source, t = cost.target;
boolean constInEveryCV2k = true;
boolean firstPointer= true;
while( true ){
s= getUltimateTypeViaTypedefs(s);
t= getUltimateTypeViaTypedefs(t);
@ -3039,15 +3040,22 @@ public class CPPSemantics {
requiredConversion = Cost.NO_MATCH_RANK;
break;
}
constInEveryCV2k &= op2.isConst();
constInEveryCV2k &= (firstPointer || op2.isConst());
s = op1.getType();
t = op2.getType();
firstPointer= false;
}
if( s instanceof IQualifierType ^ t instanceof IQualifierType ){
if( t instanceof IQualifierType ){
if (!constInEveryCV2k) {
canConvert= false;
requiredConversion= Cost.NO_MATCH_RANK;
}
else {
canConvert = true;
requiredConversion = Cost.CONVERSION_RANK;
}
} else {
//4.2-2 a string literal can be converted to pointer to char
if( t instanceof IBasicType && ((IBasicType)t).getType() == IBasicType.t_char &&
@ -3070,10 +3078,13 @@ public class CPPSemantics {
}
} else if( s instanceof IQualifierType && t instanceof IQualifierType ){
IQualifierType qs = (IQualifierType) s, qt = (IQualifierType) t;
if( qs.isConst() && !qt.isConst() || qs.isVolatile() && !qt.isVolatile() )
requiredConversion = Cost.NO_MATCH_RANK;
else if( qs.isConst() == qt.isConst() && qs.isVolatile() == qt.isVolatile() )
if( qs.isConst() == qt.isConst() && qs.isVolatile() == qt.isVolatile() ) {
requiredConversion = Cost.IDENTITY_RANK;
}
else if( (qs.isConst() && !qt.isConst()) || (qs.isVolatile() && !qt.isVolatile()) || !constInEveryCV2k ) {
requiredConversion = Cost.NO_MATCH_RANK;
canConvert= false;
}
else
requiredConversion = Cost.CONVERSION_RANK;
} else if( constInEveryCV2k && !canConvert ){