forked from lix-project/lix
libexpr: Make unsafeGetAttrPos not crash on noPos
Currently e.g. `builtins.unsafeGetAttrPos "abort" builtins` will eventually segfault because pos->file is an unset Symbol. Found by afl-fuzz.
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@ -628,7 +628,7 @@ void EvalState::mkThunk_(Value & v, Expr * expr)
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void EvalState::mkPos(Value & v, Pos * pos)
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{
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if (pos) {
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if (pos && pos->file.set()) {
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mkAttrs(v, 3);
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mkString(*allocAttr(v, sFile), pos->file);
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mkInt(*allocAttr(v, sLine), pos->line);
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1
tests/lang/eval-okay-getattrpos-undefined.exp
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1
tests/lang/eval-okay-getattrpos-undefined.exp
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@ -0,0 +1 @@
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null
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1
tests/lang/eval-okay-getattrpos-undefined.nix
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1
tests/lang/eval-okay-getattrpos-undefined.nix
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@ -0,0 +1 @@
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builtins.unsafeGetAttrPos "abort" builtins
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