With FreeBSD/clang, -Werror combined with the configured warning flags yields
some fatal errors, specifically related to signed conversion, 64 to 32 bit
conversion, and tautological compares.
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src/Generating/FinishGen.cpp
In cFinishGenPassiveMobs::GetRandomMob(), change the type of RandMob
from size_t to the difference_type of the ListOfSpawnables iterator
MobIter. Using size_t triggers a 64 bit to 32 bit conversion if the
difference_type of the iterator class is 64 bit
Also explicitly cast the noise expression to unsigned long so we don't
get a signed conversion warning from the modulo against
ListOfSpawnables.size()
src/OSSupport/StackTrace.cpp
FreeBSD 10 and above includes a non glibc implementation of benchmark()
for which size_t, not int, is the return type. To account for this and
prevent a signed conversion warning, abstract the type for numItems with
a macro btsize
src/StringUtils.h
In StringToInteger(), correct a tautological compare warning for
unsigned types with the template. If T is unsigned, comparing
std::numeric_limits<T>::min() to the unsigned result is always
false. That control can enter this branch in an evaluated template with
an unsigned type T may also permit a signed number to be parsed and
erroneously stripped of its signedness at runtime. To guard against this
and avoid the warning in the case that the number parsed from the string
is non-positive, return false and don't try to parse if T is unsigned
and control enters the non-positive branch
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