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fix va_list reuse without a va_copy.

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aliaspider 2018-03-22 22:04:49 +01:00
parent 9849ceadc4
commit 2d1128db76
1 changed files with 5 additions and 1 deletions
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6
Common/LogManager.cpp
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@ -245,16 +245,20 @@ void LogManager::Log(LogTypes::LOG_LEVELS level, LogTypes::LOG_TYPE type, const
}
char msgBuf[1024];
va_list args_copy;
va_copy(args_copy, args);
size_t neededBytes = vsnprintf(msgBuf, sizeof(msgBuf), format, args);
if (neededBytes > sizeof(msgBuf)) {
// Needed more space? Re-run vsnprintf.
message.msg.resize(neededBytes + 1);
vsnprintf(&message.msg[0], neededBytes + 1, format, args);
vsnprintf(&message.msg[0], neededBytes + 1, format, args_copy);
} else {
message.msg.resize(neededBytes + 1);
memcpy(&message.msg[0], msgBuf, neededBytes);
}
message.msg[message.msg.size() - 1] = '\n';
va_end(args_copy);
std::lock_guard<std::mutex> listeners_lock(listeners_lock_);
for (auto &iter : listeners_) {