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[CPP-340] Add more test case; exclude K&R definitions of functions when looking
up ()-declarations; refactor QL code.
This commit is contained in:
Ziemowit Laski
@@ -14,23 +14,26 @@
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import cpp
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predicate arithTypesMatch(Type arg, Type parm) {
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arg instanceof ArithmeticType and
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parm instanceof ArithmeticType and
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arg.getSize() = parm.getSize() and
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(
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arg instanceof IntegralOrEnumType and
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parm instanceof IntegralOrEnumType
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or
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arg instanceof FloatingPointType and
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parm instanceof FloatingPointType
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)
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}
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pragma[inline]
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predicate pointerArgTypeMayBeUsed(Type arg, Type parm) {
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arg = parm
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or
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// arithmetic types
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arg instanceof ArithmeticType and
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parm instanceof ArithmeticType and
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arg.getSize() = parm.getSize() and
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(
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arg instanceof IntegralType and
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parm instanceof IntegralType
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or
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arg instanceof FloatingPointType and
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parm instanceof FloatingPointType
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)
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arithTypesMatch(arg, parm)
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or
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// pointers to void are ok
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// conversion to/from pointers to void is allowed
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arg instanceof VoidType
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or
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parm instanceof VoidType
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@@ -40,23 +43,22 @@ pragma[inline]
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predicate argTypeMayBeUsed(Type arg, Type parm) {
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arg = parm
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or
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// float arguments will have been promoted to double,
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// and the parameter must match this
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arg instanceof DoubleType and
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parm instanceof DoubleType
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or
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// integral arguments are promoted to int (but not long long).
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arg instanceof IntegralType and
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arg.getSize() = 4 and
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parm instanceof IntegralType and
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parm.getSize() = 4
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// arithmetic types
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arithTypesMatch(arg, parm)
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or
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// pointers to compatible types
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pointerArgTypeMayBeUsed(arg.(PointerType).getBaseType().getUnspecifiedType(),
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parm.(PointerType).getBaseType().getUnspecifiedType())
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or
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pointerArgTypeMayBeUsed(arg.(ArrayType).getBaseType().getUnspecifiedType(),
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parm.(PointerType).getBaseType().getUnspecifiedType())
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or
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// C11 arrays
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pointerArgTypeMayBeUsed(arg.(PointerType).getBaseType().getUnspecifiedType(),
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parm.(ArrayType).getBaseType().getUnspecifiedType())
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or
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pointerArgTypeMayBeUsed(arg.(ArrayType).getBaseType().getUnspecifiedType(),
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parm.(ArrayType).getBaseType().getUnspecifiedType())
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}
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// This predicate doesn't necessarily have to exist, but if it does exist
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@@ -69,11 +71,17 @@ predicate argMayBeUsed(Expr arg, Parameter parm) {
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parm.getType().getUnspecifiedType())
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}
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// True if function was ()-declared, but not (void)-declared
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pragma[inline]
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// True if function was ()-declared, but not (void)-declared or K&R-defined
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predicate hasZeroParamDecl(Function f) {
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exists(FunctionDeclarationEntry fde | fde = f.getADeclarationEntry() |
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not fde.hasVoidParamList() and fde.getNumberOfParameters() = 0
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not fde.hasVoidParamList() and fde.getNumberOfParameters() = 0 and not fde.isDefinition()
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)
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}
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// True if this file (or header) was compiled as a C file
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predicate isCompiledAsC(Function f) {
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exists(File file | file.compiledAsC() |
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file = f.getFile() or file.getAnIncludedFile+() = f.getFile()
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)
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}
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@@ -81,12 +89,14 @@ from FunctionCall fc, Function f, Parameter p
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where
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f = fc.getTarget() and
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p = f.getAParameter() and
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not f.isVarargs() and
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p.getIndex() < fc.getNumberOfArguments() and
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hasZeroParamDecl(f) and
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isCompiledAsC(f) and
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not f.isVarargs() and
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not f instanceof BuiltInFunction and
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p.getIndex() < fc.getNumberOfArguments() and
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// Parameter p and its corresponding call argument must have mismatched types
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not argMayBeUsed(fc.getArgument(p.getIndex()), p)
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select fc, "Calling $@: argument $@ of type $@ is incompatible with parameter $@", f, f.toString(),
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select fc, "Calling $@: argument $@ of type $@ is incompatible with parameter $@.", f, f.toString(),
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fc.getArgument(p.getIndex()) as arg, arg.toString(),
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arg.getFullyConverted().getType().getUnspecifiedType() as atype,
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atype.toString(), p, p.getTypedName()
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arg.getExplicitlyConverted().getType().getUnspecifiedType() as atype, atype.toString(), p,
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p.getTypedName()
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@@ -15,17 +15,30 @@
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import cpp
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// True if function was ()-declared, but not (void)-declared or K&R-defined
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predicate hasZeroParamDecl(Function f) {
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exists(FunctionDeclarationEntry fde | fde = f.getADeclarationEntry() |
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not fde.hasVoidParamList() and fde.getNumberOfParameters() = 0 and not fde.isDefinition()
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)
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}
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// True if this file (or header) was compiled as a C file
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predicate isCompiledAsC(Function f) {
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exists(File file | file.compiledAsC() |
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file = f.getFile() or file.getAnIncludedFile+() = f.getFile()
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)
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}
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from FunctionCall fc, Function f
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where
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f = fc.getTarget() and
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not f.isVarargs() and
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// There must be a zero-parameter declaration (explicit or implicit)
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exists(FunctionDeclarationEntry fde | fde = f.getADeclarationEntry() |
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fde.getNumberOfParameters() = 0
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) and
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not f instanceof BuiltInFunction and
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hasZeroParamDecl(f) and
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isCompiledAsC(f) and
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// There is an explicit declaration of the function whose parameter count is larger
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// than the number of call arguments
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exists(FunctionDeclarationEntry fde | fde = f.getADeclarationEntry() |
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not fde.isImplicit() and fde.getNumberOfParameters() > fc.getNumberOfArguments()
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fde.getNumberOfParameters() > fc.getNumberOfArguments()
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)
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select fc, "This call has fewer arguments than required by $@.", f, f.toString()
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@@ -13,14 +13,27 @@
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import cpp
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// True if function was ()-declared, but not (void)-declared or K&R-defined
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predicate hasZeroParamDecl(Function f) {
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exists(FunctionDeclarationEntry fde | fde = f.getADeclarationEntry() |
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not fde.hasVoidParamList() and fde.getNumberOfParameters() = 0 and not fde.isDefinition()
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)
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}
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// True if this file (or header) was compiled as a C file
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predicate isCompiledAsC(Function f) {
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exists(File file | file.compiledAsC() |
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file = f.getFile() or file.getAnIncludedFile+() = f.getFile()
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)
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}
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from FunctionCall fc, Function f
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where
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f = fc.getTarget() and
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not f.isVarargs() and
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// There must be a zero-parameter declaration (explicit or implicit)
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exists(FunctionDeclarationEntry fde | fde = f.getADeclarationEntry() |
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fde.getNumberOfParameters() = 0
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) and
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not f instanceof BuiltInFunction and
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hasZeroParamDecl(f) and
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isCompiledAsC(f) and
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// There must not exist a declaration with the number of parameters
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// at least as large as the number of call arguments
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not exists(FunctionDeclarationEntry fde | fde = f.getADeclarationEntry() |
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@@ -1,16 +1,20 @@
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| test.c:25:3:25:19 | call to not_yet_declared2 | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:24:3:24:3 | not_yet_declared2 | not_yet_declared2 | test.c:25:21:25:22 | ca | ca | file://:0:0:0:0 | int * | int * | test.c:54:24:54:26 | p#0 | int p#0 |
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| test.c:25:3:25:19 | call to not_yet_declared2 | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:54:6:54:22 | not_yet_declared2 | not_yet_declared2 | test.c:25:21:25:22 | ca | ca | file://:0:0:0:0 | int * | int * | test.c:54:24:54:26 | p#0 | int p#0 |
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| test.c:32:3:32:29 | call to declared_empty_defined_with | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:55:6:55:32 | declared_empty_defined_with | declared_empty_defined_with | test.c:32:31:32:32 | & ... | & ... | file://:0:0:0:0 | int * | int * | test.c:55:38:55:38 | x | int x |
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| test.c:36:3:36:27 | call to not_declared_defined_with | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:58:6:58:30 | not_declared_defined_with | not_declared_defined_with | test.c:36:29:36:31 | 4 | 4 | file://:0:0:0:0 | long long | long long | test.c:58:36:58:36 | x | int x |
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| test.c:36:3:36:27 | call to not_declared_defined_with | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:58:6:58:30 | not_declared_defined_with | not_declared_defined_with | test.c:36:37:36:42 | 2500000000.0 | 2500000000.0 | file://:0:0:0:0 | double | double | test.c:58:50:58:50 | z | int z |
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| test.c:39:3:39:24 | call to declared_with_pointers | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:5:6:5:27 | declared_with_pointers | declared_with_pointers | test.c:39:26:39:31 | 3500000000000000.0 | 3500000000000000.0 | file://:0:0:0:0 | double | double | test.c:70:34:70:34 | x | int * x |
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| test.c:39:3:39:24 | call to declared_with_pointers | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:5:6:5:27 | declared_with_pointers | declared_with_pointers | test.c:39:34:39:34 | 0 | 0 | file://:0:0:0:0 | int | int | test.c:70:43:70:43 | y | void * y |
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| test.c:39:3:39:24 | call to declared_with_pointers | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:70:6:70:27 | declared_with_pointers | declared_with_pointers | test.c:39:26:39:31 | 3500000000000000.0 | 3500000000000000.0 | file://:0:0:0:0 | double | double | test.c:70:34:70:34 | x | int * x |
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| test.c:39:3:39:24 | call to declared_with_pointers | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:70:6:70:27 | declared_with_pointers | declared_with_pointers | test.c:39:34:39:34 | 0 | 0 | file://:0:0:0:0 | int | int | test.c:70:43:70:43 | y | void * y |
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| test.c:41:3:41:21 | call to declared_with_array | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:6:6:6:24 | declared_with_array | declared_with_array | test.c:41:23:41:24 | & ... | & ... | file://:0:0:0:0 | int * | int * | test.c:71:31:71:31 | a | char[6] a |
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| test.c:41:3:41:21 | call to declared_with_array | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:71:6:71:24 | declared_with_array | declared_with_array | test.c:41:23:41:24 | & ... | & ... | file://:0:0:0:0 | int * | int * | test.c:71:31:71:31 | a | char[6] a |
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| test.c:43:3:43:20 | call to defined_with_float | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:73:7:73:24 | defined_with_float | defined_with_float | test.c:43:22:43:24 | 2.0 | 2.0 | file://:0:0:0:0 | double | double | test.c:73:32:73:32 | f | float f |
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| test.c:44:3:44:20 | call to defined_with_float | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:73:7:73:24 | defined_with_float | defined_with_float | test.c:44:22:44:24 | 2.0 | 2.0 | file://:0:0:0:0 | double | double | test.c:73:32:73:32 | f | float f |
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| test.c:47:3:47:21 | call to defined_with_double | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:77:8:77:26 | defined_with_double | defined_with_double | test.c:47:23:47:25 | 99 | 99 | file://:0:0:0:0 | int | int | test.c:77:35:77:35 | d | double d |
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| test.c:49:3:49:24 | call to defined_with_long_long | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:81:11:81:32 | defined_with_long_long | defined_with_long_long | test.c:49:26:49:28 | 99 | 99 | file://:0:0:0:0 | int | int | test.c:81:44:81:45 | ll | long long ll |
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| test.c:50:3:50:24 | call to defined_with_long_long | Calling $@: argument $@ of type $@ is incompatible with parameter $@ | test.c:81:11:81:32 | defined_with_long_long | defined_with_long_long | test.c:50:26:50:26 | 3 | 3 | file://:0:0:0:0 | int | int | test.c:81:44:81:45 | ll | long long ll |
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| test.c:32:3:32:19 | call to not_yet_declared2 | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:31:3:31:3 | not_yet_declared2 | not_yet_declared2 | test.c:32:21:32:22 | ca | ca | file://:0:0:0:0 | int * | int * | test.c:66:24:66:26 | p#0 | int p#0 |
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| test.c:32:3:32:19 | call to not_yet_declared2 | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:31:3:31:3 | not_yet_declared2 | not_yet_declared2 | test.c:32:21:32:22 | ca | ca | file://:0:0:0:0 | int[4] | int[4] | test.c:66:24:66:26 | p#0 | int p#0 |
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| test.c:32:3:32:19 | call to not_yet_declared2 | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:66:6:66:22 | not_yet_declared2 | not_yet_declared2 | test.c:32:21:32:22 | ca | ca | file://:0:0:0:0 | int * | int * | test.c:66:24:66:26 | p#0 | int p#0 |
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| test.c:32:3:32:19 | call to not_yet_declared2 | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:66:6:66:22 | not_yet_declared2 | not_yet_declared2 | test.c:32:21:32:22 | ca | ca | file://:0:0:0:0 | int[4] | int[4] | test.c:66:24:66:26 | p#0 | int p#0 |
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| test.c:39:3:39:29 | call to declared_empty_defined_with | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:67:6:67:32 | declared_empty_defined_with | declared_empty_defined_with | test.c:39:31:39:32 | & ... | & ... | file://:0:0:0:0 | int * | int * | test.c:67:38:67:38 | x | int x |
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| test.c:43:3:43:27 | call to not_declared_defined_with | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:70:6:70:30 | not_declared_defined_with | not_declared_defined_with | test.c:43:29:43:31 | 4 | 4 | file://:0:0:0:0 | long long | long long | test.c:70:36:70:36 | x | int x |
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| test.c:43:3:43:27 | call to not_declared_defined_with | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:70:6:70:30 | not_declared_defined_with | not_declared_defined_with | test.c:43:37:43:42 | 2500000000.0 | 2500000000.0 | file://:0:0:0:0 | float | float | test.c:70:50:70:50 | z | int z |
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| test.c:46:3:46:24 | call to declared_with_pointers | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:5:6:5:27 | declared_with_pointers | declared_with_pointers | test.c:46:26:46:31 | 3500000000000000.0 | 3500000000000000.0 | file://:0:0:0:0 | double | double | test.c:82:34:82:34 | x | int * x |
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| test.c:46:3:46:24 | call to declared_with_pointers | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:5:6:5:27 | declared_with_pointers | declared_with_pointers | test.c:46:34:46:34 | 0 | 0 | file://:0:0:0:0 | int | int | test.c:82:43:82:43 | y | void * y |
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| test.c:46:3:46:24 | call to declared_with_pointers | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:82:6:82:27 | declared_with_pointers | declared_with_pointers | test.c:46:26:46:31 | 3500000000000000.0 | 3500000000000000.0 | file://:0:0:0:0 | double | double | test.c:82:34:82:34 | x | int * x |
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| test.c:46:3:46:24 | call to declared_with_pointers | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:82:6:82:27 | declared_with_pointers | declared_with_pointers | test.c:46:34:46:34 | 0 | 0 | file://:0:0:0:0 | int | int | test.c:82:43:82:43 | y | void * y |
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| test.c:48:3:48:21 | call to declared_with_array | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:6:6:6:24 | declared_with_array | declared_with_array | test.c:48:23:48:24 | & ... | & ... | file://:0:0:0:0 | int * | int * | test.c:83:31:83:31 | a | char[6] a |
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| test.c:48:3:48:21 | call to declared_with_array | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:83:6:83:24 | declared_with_array | declared_with_array | test.c:48:23:48:24 | & ... | & ... | file://:0:0:0:0 | int * | int * | test.c:83:31:83:31 | a | char[6] a |
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| test.c:50:3:50:20 | call to defined_with_float | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:85:7:85:24 | defined_with_float | defined_with_float | test.c:50:22:50:24 | 2.0 | 2.0 | file://:0:0:0:0 | float | float | test.c:85:32:85:32 | f | float f |
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| test.c:51:3:51:20 | call to defined_with_float | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:85:7:85:24 | defined_with_float | defined_with_float | test.c:51:22:51:24 | 2.0 | 2.0 | file://:0:0:0:0 | double | double | test.c:85:32:85:32 | f | float f |
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| test.c:54:3:54:21 | call to defined_with_double | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:89:8:89:26 | defined_with_double | defined_with_double | test.c:54:23:54:25 | 99 | 99 | file://:0:0:0:0 | int | int | test.c:89:35:89:35 | d | double d |
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| test.c:56:3:56:24 | call to defined_with_long_long | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:93:11:93:32 | defined_with_long_long | defined_with_long_long | test.c:56:26:56:28 | 99 | 99 | file://:0:0:0:0 | int | int | test.c:93:44:93:45 | ll | long long ll |
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| test.c:57:3:57:24 | call to defined_with_long_long | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:93:11:93:32 | defined_with_long_long | defined_with_long_long | test.c:57:26:57:26 | 3 | 3 | file://:0:0:0:0 | int | int | test.c:93:44:93:45 | ll | long long ll |
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| test.c:59:3:59:21 | call to defined_with_double | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:89:8:89:26 | defined_with_double | defined_with_double | test.c:59:23:59:25 | 2 | 2 | file://:0:0:0:0 | long long | long long | test.c:89:35:89:35 | d | double d |
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| test.c:60:3:60:24 | call to defined_with_long_long | Calling $@: argument $@ of type $@ is incompatible with parameter $@. | test.c:93:11:93:32 | defined_with_long_long | defined_with_long_long | test.c:60:26:60:31 | 2.499999999999999983e+50 | 2.499999999999999983e+50 | file://:0:0:0:0 | double | double | test.c:93:44:93:45 | ll | long long ll |
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@@ -1,4 +1,4 @@
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| test.c:26:3:26:19 | call to not_yet_declared2 | This call has fewer arguments than required by $@. | test.c:24:3:24:3 | not_yet_declared2 | not_yet_declared2 |
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| test.c:26:3:26:19 | call to not_yet_declared2 | This call has fewer arguments than required by $@. | test.c:54:6:54:22 | not_yet_declared2 | not_yet_declared2 |
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| test.c:28:3:28:29 | call to declared_empty_defined_with | This call has fewer arguments than required by $@. | test.c:55:6:55:32 | declared_empty_defined_with | declared_empty_defined_with |
|
||||
| test.c:65:10:65:20 | call to dereference | This call has fewer arguments than required by $@. | test.c:68:5:68:15 | dereference | dereference |
|
||||
| test.c:33:3:33:19 | call to not_yet_declared2 | This call has fewer arguments than required by $@. | test.c:31:3:31:3 | not_yet_declared2 | not_yet_declared2 |
|
||||
| test.c:33:3:33:19 | call to not_yet_declared2 | This call has fewer arguments than required by $@. | test.c:66:6:66:22 | not_yet_declared2 | not_yet_declared2 |
|
||||
| test.c:35:3:35:29 | call to declared_empty_defined_with | This call has fewer arguments than required by $@. | test.c:67:6:67:32 | declared_empty_defined_with | declared_empty_defined_with |
|
||||
| test.c:77:10:77:20 | call to dereference | This call has fewer arguments than required by $@. | test.c:80:5:80:15 | dereference | dereference |
|
||||
|
||||
@@ -1,5 +1,5 @@
|
||||
| test.c:16:3:16:16 | call to declared_empty | This call has more arguments than required by $@. | test.c:1:6:1:19 | declared_empty | declared_empty |
|
||||
| test.c:21:3:21:12 | call to undeclared | This call has more arguments than required by $@. | test.c:20:3:20:3 | undeclared | undeclared |
|
||||
| test.c:23:3:23:19 | call to not_yet_declared1 | This call has more arguments than required by $@. | test.c:23:3:23:3 | not_yet_declared1 | not_yet_declared1 |
|
||||
| test.c:23:3:23:19 | call to not_yet_declared1 | This call has more arguments than required by $@. | test.c:53:6:53:22 | not_yet_declared1 | not_yet_declared1 |
|
||||
| test.c:33:3:33:29 | call to declared_empty_defined_with | This call has more arguments than required by $@. | test.c:55:6:55:32 | declared_empty_defined_with | declared_empty_defined_with |
|
||||
| test.c:23:3:23:16 | call to declared_empty | This call has more arguments than required by $@. | test.c:1:6:1:19 | declared_empty | declared_empty |
|
||||
| test.c:28:3:28:12 | call to undeclared | This call has more arguments than required by $@. | test.c:27:3:27:3 | undeclared | undeclared |
|
||||
| test.c:30:3:30:19 | call to not_yet_declared1 | This call has more arguments than required by $@. | test.c:30:3:30:3 | not_yet_declared1 | not_yet_declared1 |
|
||||
| test.c:30:3:30:19 | call to not_yet_declared1 | This call has more arguments than required by $@. | test.c:65:6:65:22 | not_yet_declared1 | not_yet_declared1 |
|
||||
| test.c:40:3:40:29 | call to declared_empty_defined_with | This call has more arguments than required by $@. | test.c:67:6:67:32 | declared_empty_defined_with | declared_empty_defined_with |
|
||||
|
||||
@@ -5,6 +5,13 @@ void declared_empty_defined_with();
|
||||
void declared_with_pointers();
|
||||
void declared_with_array();
|
||||
|
||||
int k_and_r_func(c,d)
|
||||
char c;
|
||||
double d;
|
||||
{
|
||||
return c + d;
|
||||
}
|
||||
|
||||
struct _s { int a, b; } s;
|
||||
|
||||
int ca[4] = { 1, 2, 3, 4 };
|
||||
@@ -48,6 +55,11 @@ void test() {
|
||||
|
||||
defined_with_long_long('c'); // BAD
|
||||
defined_with_long_long(3); // BAD
|
||||
|
||||
defined_with_double(2LL); // BAD
|
||||
defined_with_long_long(2.5e50); // BAD
|
||||
|
||||
k_and_r_func(2.5, &s); // GOOD
|
||||
}
|
||||
|
||||
void not_yet_declared1();
|
||||
|
||||
@@ -5,4 +5,7 @@ void test() {
|
||||
cpp_varargs(); // GOOD
|
||||
cpp_varargs(1); // GOOD
|
||||
__builtin_constant_p("something"); // GOOD: builtin
|
||||
|
||||
// The following is marked "good" since we are not supposed
|
||||
// to analyze C++ files.
|
||||
}
|
||||
Reference in New Issue
Block a user