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Fix #9941: Return value type of library functions returning unsigned (#2848) 

Fix return value types of library functions returning unsigned.
Previously, the valueType of auto x = f() would be signed even if f()
was specified to return an unsigned type.

This fixes #9941, which is a regression in cppcheck 2.2 compared to 2.1.
The regression was introduced in 32df807b22.
This commit is contained in:
Rikard Falkeborn 2020-10-16 07:56:31 +02:00 committed by GitHub
parent 08cef9e815
commit 33739d23aa
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 32 additions and 1 deletions
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2
Makefile
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@ -730,7 +730,7 @@ test/testsuite.o: test/testsuite.cpp lib/config.h lib/errorlogger.h lib/errortyp
test/testsuppressions.o: test/testsuppressions.cpp cli/threadexecutor.h lib/analyzerinfo.h lib/check.h lib/config.h lib/cppcheck.h lib/errorlogger.h lib/errortypes.h lib/importproject.h lib/library.h lib/mathlib.h lib/platform.h lib/settings.h lib/standards.h lib/suppressions.h lib/timer.h lib/utils.h test/testsuite.h
$(CXX) ${INCLUDE_FOR_TEST} $(CPPFLAGS) $(CPPFILESDIR) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -c -o test/testsuppressions.o test/testsuppressions.cpp
test/testsymboldatabase.o: test/testsymboldatabase.cpp lib/config.h lib/errorlogger.h lib/errortypes.h lib/importproject.h lib/library.h lib/mathlib.h lib/platform.h lib/settings.h lib/standards.h lib/suppressions.h lib/symboldatabase.h lib/templatesimplifier.h lib/timer.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/valueflow.h test/testsuite.h test/testutils.h
test/testsymboldatabase.o: test/testsymboldatabase.cpp externals/tinyxml/tinyxml2.h lib/config.h lib/errorlogger.h lib/errortypes.h lib/importproject.h lib/library.h lib/mathlib.h lib/platform.h lib/settings.h lib/standards.h lib/suppressions.h lib/symboldatabase.h lib/templatesimplifier.h lib/timer.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/valueflow.h test/testsuite.h test/testutils.h
$(CXX) ${INCLUDE_FOR_TEST} $(CPPFLAGS) $(CPPFILESDIR) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -c -o test/testsymboldatabase.o test/testsymboldatabase.cpp
test/testthreadexecutor.o: test/testthreadexecutor.cpp cli/threadexecutor.h lib/config.h lib/errorlogger.h lib/errortypes.h lib/importproject.h lib/library.h lib/mathlib.h lib/platform.h lib/settings.h lib/standards.h lib/suppressions.h lib/timer.h lib/utils.h test/testsuite.h

1
lib/symboldatabase.cpp
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@ -6148,6 +6148,7 @@ void SymbolDatabase::setValueTypeInTokenList(bool reportDebugWarnings, Token *to
TokenList tokenList(mSettings);
std::istringstream istr(typestr+";");
tokenList.createTokens(istr);
tokenList.simplifyStdType();
if (parsedecl(tokenList.front(), &valuetype, mDefaultSignedness, mSettings)) {
valuetype.originalTypeName = typestr;
setValueType(tok, valuetype);

30
test/testsymboldatabase.cpp
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@ -37,6 +37,7 @@
#include <sstream>
#include <stdexcept>
#include <string>
#include <tinyxml2.h>
#include <vector>
struct InternalError;
@ -6931,6 +6932,35 @@ private:
ASSERT_EQUALS("signed long long", typeOf("enum E : long long { }; void foo() { E e[3]; bar(e[0]); }", "[ 0"));
ASSERT_EQUALS("unsigned long long", typeOf("enum E : unsigned long long { }; void foo() { E e[3]; bar(e[0]); }", "[ 0"));
#define CHECK_LIBRARY_FUNCTION_RETURN_TYPE(type) do { \
Settings sF; \
const char xmldata[] = "<?xml version=\"1.0\"?>\n" \
"<def>\n" \
"<function name=\"g\">\n" \
"<returnValue type=\"" #type "\"/>\n" \
"</function>\n" \
"</def>"; \
tinyxml2::XMLDocument doc; \
doc.Parse(xmldata, sizeof(xmldata)); \
sF.library.load(doc); \
ASSERT_EQUALS(#type, typeOf("void f() { auto x = g(); }", "x", "test.cpp", &sF)); \
} while (false)
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(bool);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(signed char);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(unsigned char);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(signed short);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(unsigned short);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(signed int);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(unsigned int);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(signed long);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(unsigned long);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(signed long long);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(unsigned long long);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(void *);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(void * *);
CHECK_LIBRARY_FUNCTION_RETURN_TYPE(const void *);
#undef CHECK_LIBRARY_FUNCTION_RETURN_TYPE
// Library types
{
// Char types