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Code Issues Wiki Activity

Support for __builtinOffsetof, bug 265001.

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This commit is contained in:
Markus Schorn 2009-02-20 08:16:06 +00:00
parent 9c8ddfd6ba
commit 4db2416905
4 changed files with 36 additions and 4 deletions
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27
core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/GCCCompleteParseExtensionsTest.java
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@ -381,4 +381,31 @@ public class GCCCompleteParseExtensionsTest extends AST2BaseTest {
parseGPP( writer.toString() );
}
// typedef int size_t; // will be defined in <stddef.h>
// struct S {int m;};
// void test() {
// int a= __builtin_offsetof(struct S, m);
// };
public void test__builtinOffsetof_Bug265001() throws Exception {
// gcc with __GNUC__ >= 4 defines:
// #define offsetof(type, field) __builtin_offsetof(type, field)
String code= getAboveComment();
parseGCC(code);
parseGPP(code);
}
// typedef struct S {int m;} T;
// void test() {
// int a= __offsetof__(1);
// };
public void test__offsetof__Bug265001() throws Exception {
// gcc with __GNUC__ < 4 defines:
// #define offsetof(type, field) \
// (__offsetof__ (reinterpret_cast <__size_t> \
// (& reinterpret_cast <const volatile char &> \
// (static_cast<type *> (0)->field))))
String code= getAboveComment();
parseGPP(code);
}
}

3
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/parser/GNUScannerExtensionConfiguration.java
View file

@ -40,7 +40,8 @@ public abstract class GNUScannerExtensionConfiguration extends AbstractScannerEx
addMacro("__builtin_va_arg(ap,type)", "*(type *)ap");
addMacro("__builtin_constant_p(exp)", "0");
addMacro("__builtin_types_compatible_p(x,y)", "__builtin_types_compatible_p(sizeof(x),sizeof(y))");
addMacro("__offsetof__(x)", "(x)");
addPreprocessorKeyword(Keywords.cINCLUDE_NEXT, IPreprocessorDirective.ppInclude_next);
addPreprocessorKeyword(Keywords.cIMPORT, IPreprocessorDirective.ppImport);
addPreprocessorKeyword(Keywords.cWARNING, IPreprocessorDirective.ppWarning);

6
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/parser/c/GCCScannerExtensionConfiguration.java
View file

@ -28,9 +28,11 @@ public class GCCScannerExtensionConfiguration extends GNUScannerExtensionConfigu
return sInstance;
}
@SuppressWarnings("nls")
public GCCScannerExtensionConfiguration() {
addMacro("__null", "(void *)0"); //$NON-NLS-1$//$NON-NLS-2$
addMacro("_Pragma(arg)", ""); //$NON-NLS-1$//$NON-NLS-2$
addMacro("__null", "(void *)0");
addMacro("_Pragma(arg)", "");
addMacro("__builtin_offsetof(T,m)", "((size_t) &((T *)0)->m)");
}
/* (non-Javadoc)

4
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/parser/cpp/GPPScannerExtensionConfiguration.java
View file

@ -31,8 +31,10 @@ public class GPPScannerExtensionConfiguration extends GNUScannerExtensionConfigu
return sInstance;
}
@SuppressWarnings("nls")
public GPPScannerExtensionConfiguration() {
addMacro("__null", "0"); //$NON-NLS-1$//$NON-NLS-2$
addMacro("__null", "0");
addMacro("__builtin_offsetof(T,m)", "(reinterpret_cast <size_t>(&reinterpret_cast <const volatile char &>(static_cast<T*> (0)->m)))");
addKeyword(Keywords.c_COMPLEX, IToken.t__Complex);
addKeyword(Keywords.c_IMAGINARY, IToken.t__Imaginary);
}