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readFile: Check against nul bytes

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This commit is contained in:
Eelco Dolstra 2015-06-01 15:07:42 +02:00
parent feca5cb67f
commit 1c88e100e7
1 changed files with 4 additions and 1 deletions
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5
src/libexpr/primops.cc
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@ -749,7 +749,10 @@ static void prim_readFile(EvalState & state, const Pos & pos, Value * * args, Va
throw EvalError(format("cannot read ‘%1%’, since path ‘%2%’ is not valid, at %3%") throw EvalError(format("cannot read ‘%1%’, since path ‘%2%’ is not valid, at %3%")
% path % e.path % pos); % path % e.path % pos);
} }
mkString(v, readFile(state.checkSourcePath(path)).c_str()); string s = readFile(state.checkSourcePath(path));
if (s.find((char) 0) != string::npos)
throw Error(format("the contents of the file ‘%1%’ cannot be represented as a Nix string") % path);
mkString(v, s.c_str());
} }