libgc-dev - 1:7.6.4-0.4 main

Boehm-Demers-Weiser's GC is a garbage collecting storage allocator that is
intended to be used as a plug-in replacement for C's malloc or C++'s new().
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It allows you to allocate memory basically as you normally would without
explicitly deallocating memory that is no longer useful. The collector
automatically recycles memory when it determines that it can no longer be
used.
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This version of the collector is thread safe, has C++ support and uses the
defaults for everything else. However, it does not work as a drop-in malloc(3)
replacement.
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This package is required to compile and link programs that use libgc1c2.