forked from lix-project/lix
Output line number on infinite recursion
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76cc8e97a2
commit
75837651f1
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@ -1,15 +1,16 @@
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#pragma once
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#include "eval.hh"
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#include "shared.hh"
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#define LocalNoInline(f) static f __attribute__((noinline)); f
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#define LocalNoInlineNoReturn(f) static f __attribute__((noinline, noreturn)); f
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namespace nix {
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LocalNoInlineNoReturn(void throwEvalError(const char * s))
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LocalNoInlineNoReturn(void throwEvalError(const FormatOrString & fs))
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{
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throw EvalError(s);
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throw EvalError(fs);
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}
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LocalNoInlineNoReturn(void throwTypeError(const char * s, const Value & v))
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@ -24,7 +25,7 @@ LocalNoInlineNoReturn(void throwTypeError(const char * s, const Value & v, const
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}
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void EvalState::forceValue(Value & v)
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void EvalState::forceValue(Value & v, const Pos & pos)
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{
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if (v.type == tThunk) {
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Env * env = v.thunk.env;
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@ -43,7 +44,7 @@ void EvalState::forceValue(Value & v)
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else if (v.type == tApp)
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callFunction(*v.app.left, *v.app.right, v, noPos);
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else if (v.type == tBlackhole)
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throwEvalError("infinite recursion encountered");
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throwEvalError(format("infinite recursion encountered, at %1%") % pos);
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}
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@ -746,7 +746,7 @@ void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
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for (auto & i : dynamicAttrs) {
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Value nameVal;
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i.nameExpr->eval(state, *dynamicEnv, nameVal);
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state.forceValue(nameVal);
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state.forceValue(nameVal, i.pos);
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if (nameVal.type == tNull)
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continue;
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state.forceStringNoCtx(nameVal);
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@ -792,7 +792,7 @@ void ExprList::eval(EvalState & state, Env & env, Value & v)
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void ExprVar::eval(EvalState & state, Env & env, Value & v)
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{
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Value * v2 = state.lookupVar(&env, *this, false);
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state.forceValue(*v2);
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state.forceValue(*v2, pos);
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v = *v2;
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}
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@ -831,7 +831,7 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v)
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Bindings::iterator j;
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Symbol name = getName(i, state, env);
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if (def) {
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state.forceValue(*vAttrs);
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state.forceValue(*vAttrs, pos);
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if (vAttrs->type != tAttrs ||
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(j = vAttrs->attrs->find(name)) == vAttrs->attrs->end())
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{
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@ -848,7 +848,7 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v)
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if (state.countCalls && pos2) state.attrSelects[*pos2]++;
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}
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state.forceValue(*vAttrs);
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state.forceValue(*vAttrs, ( pos2 != NULL ? *pos2 : this->pos ) );
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} catch (Error & e) {
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if (pos2 && pos2->file != state.sDerivationNix)
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@ -950,10 +950,10 @@ void EvalState::callFunction(Value & fun, Value & arg, Value & v, const Pos & po
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if (fun.type == tAttrs) {
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auto found = fun.attrs->find(sFunctor);
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if (found != fun.attrs->end()) {
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forceValue(*found->value);
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forceValue(*found->value, pos);
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Value * v2 = allocValue();
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callFunction(*found->value, fun, *v2, pos);
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forceValue(*v2);
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forceValue(*v2, pos);
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return callFunction(*v2, arg, v, pos);
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}
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}
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@ -1280,7 +1280,7 @@ void EvalState::forceValueDeep(Value & v)
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NixInt EvalState::forceInt(Value & v, const Pos & pos)
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{
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forceValue(v);
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forceValue(v, pos);
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if (v.type != tInt)
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throwTypeError("value is %1% while an integer was expected, at %2%", v, pos);
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return v.integer;
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@ -1306,7 +1306,7 @@ void EvalState::forceFunction(Value & v, const Pos & pos)
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string EvalState::forceString(Value & v, const Pos & pos)
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{
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forceValue(v);
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forceValue(v, pos);
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if (v.type != tString) {
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if (pos)
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throwTypeError("value is %1% while a string was expected, at %2%", v, pos);
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@ -136,7 +136,7 @@ public:
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of the evaluation of the thunk. If `v' is a delayed function
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application, call the function and overwrite `v' with the
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result. Otherwise, this is a no-op. */
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inline void forceValue(Value & v);
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inline void forceValue(Value & v, const Pos & pos = noPos);
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/* Force a value, then recursively force list elements and
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attributes. */
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@ -14,3 +14,6 @@ nix-env --version | grep "$version"
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# Usage errors.
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nix-env --foo 2>&1 | grep "no operation"
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nix-env -q --foo 2>&1 | grep "unknown flag"
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# Eval Errors.
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nix-instantiate --eval -E 'let a = {} // a; in a.foo' 2>&1 | grep "infinite recursion encountered, at (string):1:15$"
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