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Fixed crash #6684

This commit is contained in:
PKEuS 2015-05-12 14:00:43 +02:00
parent 1b6e4589da
commit 4f00189ee1
2 changed files with 22 additions and 8 deletions
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14
lib/preprocessor.cpp
View File

@ -1136,7 +1136,7 @@ std::string Preprocessor::getdef(std::string line, bool def)
}
/** Simplify variable in variable map. */
static Token *simplifyVarMapExpandValue(Token *tok, const std::map<std::string, std::string> &variables, std::set<std::string> seenVariables)
static Token *simplifyVarMapExpandValue(Token *tok, const std::map<std::string, std::string> &variables, std::set<std::string> seenVariables, const Settings* settings)
{
// TODO: handle function-macros too.
@ -1147,13 +1147,13 @@ static Token *simplifyVarMapExpandValue(Token *tok, const std::map<std::string,
const std::map<std::string, std::string>::const_iterator it = variables.find(tok->str());
if (it != variables.end()) {
TokenList tokenList(nullptr);
TokenList tokenList(settings);
std::istringstream istr(it->second);
if (tokenList.createTokens(istr)) {
// expand token list
for (Token *tok2 = tokenList.front(); tok2; tok2 = tok2->next()) {
if (tok2->isName()) {
tok2 = simplifyVarMapExpandValue(tok2, variables, seenVariables);
tok2 = simplifyVarMapExpandValue(tok2, variables, seenVariables, settings);
}
}
@ -1175,16 +1175,16 @@ static Token *simplifyVarMapExpandValue(Token *tok, const std::map<std::string,
* Simplifies the variable map. For example if the map contains A=>B, B=>1, then A=>B is simplified to A=>1.
* @param [in,out] variables - a map of variable name to variable value. This map will be modified.
*/
static void simplifyVarMap(std::map<std::string, std::string> &variables)
static void simplifyVarMap(std::map<std::string, std::string> &variables, const Settings* settings)
{
for (std::map<std::string, std::string>::iterator i = variables.begin(); i != variables.end(); ++i) {
TokenList tokenList(nullptr);
TokenList tokenList(settings);
std::istringstream istr(i->second);
if (tokenList.createTokens(istr)) {
for (Token *tok = tokenList.front(); tok; tok = tok->next()) {
if (tok->isName()) {
std::set<std::string> seenVariables;
tok = simplifyVarMapExpandValue(tok, variables, seenVariables);
tok = simplifyVarMapExpandValue(tok, variables, seenVariables, settings);
}
}
@ -1742,7 +1742,7 @@ bool Preprocessor::match_cfg_def(std::map<std::string, std::string> cfg, std::st
std::cout << "def: \"" << def << "\"\n";
*/
simplifyVarMap(cfg);
simplifyVarMap(cfg, _settings);
simplifyCondition(cfg, def, true);
if (cfg.find(def) != cfg.end())

16
test/testpreprocessor.cpp
View File

@ -297,7 +297,9 @@ private:
TEST_CASE(if_sizeof);
TEST_CASE(double_include); // #5717
TEST_CASE(invalid_ifs)// #5909
TEST_CASE(invalid_ifs); // #5909
TEST_CASE(garbage);
}
@ -4067,7 +4069,19 @@ private:
Settings settings;
Preprocessor preprocessor(&settings, this);
preprocessor.preprocess(istr, actual, "file.c");
}
void garbage() {
const char filedata[] = "V\n"
"#define X b #endif #line 0 \"x\" ;\n"
"#if ! defined ( Y ) #endif";
// Preprocess => don't crash..
std::istringstream istr(filedata);
std::map<std::string, std::string> actual;
Settings settings;
Preprocessor preprocessor(&settings, this);
preprocessor.preprocess(istr, actual, "file.c");
}
};