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Safer casting from double to long.

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(cherry picked from commit 372e28c41044a9e8b65d7d7093e028e30a7c8c8a)
This commit is contained in:
Kevin Backhouse 2021-08-02 23:04:58 +01:00 committed by mergify-bot
parent e7d43b94a3
commit 4674fae4ef
1 changed files with 18 additions and 0 deletions
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18
include/exiv2/value.hpp
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@ -1628,6 +1628,24 @@ namespace Exiv2 {
}
// #55 crash when value_.at(n).first == LONG_MIN
#define LARGE_INT 1000000
// Specialization for double
template<>
inline long ValueType<double>::toLong(long n) const
{
const double v = value_.at(n);
ok_ = (INT_MIN <= v && v <= INT_MAX);
if (!ok_) return 0;
return static_cast<long>(v);
}
// Specialization for float
template<>
inline long ValueType<float>::toLong(long n) const
{
const double v = value_.at(n);
ok_ = (INT_MIN <= v && v <= INT_MAX);
if (!ok_) return 0;
return static_cast<long>(v);
}
// Specialization for rational
template<>
inline long ValueType<Rational>::toLong(long n) const