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Date: Thu, 25 Nov 2021 14:53:13 +0000
From: "Quesada Gonzalez, Elena" <elena.quesada_gonzalez@...mens.com>
To: "musl@...ts.openwall.com" <musl@...ts.openwall.com>
Subject: SIGSEV error when using REGEX with musl library
I have the following function that works fine if the regular expression is correct, but get a SIGSEGV when calling regex_search compiling with clang-9 and using musl 1.2.
However, it works fine with glibc,
Could be a bug in musl library?
Find code below
void CRuntimeCommandLine::LoadComplement(const multimap<std::string, std::string>& mapArguments)
{
// Find parameter
multimap<string, string>::const_iterator iter;
iter = mapArguments.find("Complement");
if(iter == mapArguments.end())
{
// Only fatal. Statement is not initialized yet.
Logger::fatal(Errors::RCMD_F005_MISSING_MANDATORY_PARAM, "Missing mandatory parameter --Complement");
}
// regex expression for system_secret to be checked (Max 4Bytes, hexadecimal number in lowe case letters and no 0x format)
regex regexp("^[0-9a-f]{1,8}$");
// regex_search that searches pattern regexp in the string mystr
std::string s = iter->second.c_str();
if (false == std::regex_search(s, regexp))
{
// Only fatal. Statement is not initialized yet.
Logger::fatal(Errors::RCMD_F006_INVALID_VALUE, "Invalid --Complement=hexvalue value");
}
else
{
// get hexadecimal value
(void)sscanf(s.c_str(), "%X", &(m_cmdParameters.complementValue));
}
}
With kind regards
Elena Quesada Gonzalez
Siemens Rail Automation S.A.U.
Mobility
Rail Infrastructure
DS3
SMO RI R&D ES PF 1
Ronda de Europa, 5
28760 Tres Cantos, Spain
Mobile: +34 686405648
mailto:elena.quesada_gonzalez@...mens.com
www.siemens.es
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