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Autogen: Fix for the empty source file crash in 3.10.2

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Issue: #17793
This commit is contained in:
Sebastian Holtermann
2018-03-09 09:40:59 +01:00
committed by Brad King
parent c1e087a9d3
commit 6f2f9ce331
1 changed files with 14 additions and 8 deletions
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22
Source/cmQtAutoGenerators.cxx
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@@ -80,15 +80,21 @@ static bool ReadFile(std::string& content, std::string const& filename,
std::size_t const length = cmSystemTools::FileLength(filename);
cmsys::ifstream ifs(filename.c_str(), (std::ios::in | std::ios::binary));
if (ifs) {
content.resize(length);
ifs.read(&content.front(), content.size());
if (ifs) {
success = true;
} else {
content.clear();
if (error != nullptr) {
error->append("Reading from the file failed.");
if (length > 0) {
content.resize(length);
ifs.read(&content.front(), content.size());
if (ifs) {
success = true;
} else {
content.clear();
if (error != nullptr) {
error->append("Reading from the file failed.");
}
}
} else {
// Readable but empty file
content.clear();
success = true;
}
} else if (error != nullptr) {
error->append("Opening the file for reading failed.");