c++ - Qt - 获取 "warning: format not a string literal and no format arguments"

Question

在这样的行上不断收到警告

qDebug("An error occured while trying to create folder " + workdir.toAscii());

workdir 是 QString()

warning: format not a string literal and no format arguments

Answer 1

大概应该是:

qDebug("An error occured while trying to create folder %s", workdir.constData());

自 qDebug将 const char* 作为第一个参数。