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Merge pull request #5875 from hercules-ci/fix-large-drv-field-stack-overflow

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Fix segfault or stack overflow caused by large derivation fields
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Eelco Dolstra 2022-01-24 12:05:30 +01:00 • committed by GitHub
commit 076945c808
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3 changed files with 23 additions and 1 deletions
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5
src/libstore/derivations.cc
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@ -4,6 +4,7 @@
#include "util.hh"
#include "worker-protocol.hh"
#include "fs-accessor.hh"
#include <boost/container/small_vector.hpp>
namespace nix {
@ -272,7 +273,9 @@ Derivation parseDerivation(const Store & store, std::string && s, std::string_vi
static void printString(string & res, std::string_view s)
{
char buf[s.size() * 2 + 2];
boost::container::small_vector<char, 64 * 1024> buffer;
buffer.reserve(s.size() * 2 + 2);
char * buf = buffer.data();
char * p = buf;
*p++ = '"';
for (auto c : s)