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This page documents the bugs fixed in released versions of Dynare. For bugs fixed in previous versions of Dynare, please read the dedicated frozen page on the [DynareWiki](http://www.dynare.org/DynareWiki/KnownBugs).
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Bugs fixed in version 5.2
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-------------------------
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* Problems with the `steady_state` operator:
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+ if a `steady_state` operator contained an algebraic expression appearing multiple times in the model and sufficiently complex to trigger the creation of a temporary term, then the result of the operator would be wrong (the operator was essentially ignored) (bug fixed in preprocessor@c27342cfeb7fee793cab4ed58dfd4b9f72b6b30a)
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+ if a `steady_state` operator contained a call to an external function, then the result of the operator would be wrong (the operator was essentially ignored). A proper fix to this problem would require substantial architectural changes, so for now it is forbidden to use an external function inside a `steady_state` operator (bug fixed in preprocessor@c27342cfeb7fee793cab4ed58dfd4b9f72b6b30a)
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* Pruning in particle filtering at order 2 was not using the exact same formula as the original Kim et al. (2008) paper. A second-order term entered the cross-product between states and shocks, where it should have been a first-order term. This however would not lead to explosive trajectories in practice (bug fixed, see #1853 and f7204e6ec803f77eb107614587bb9925a4bee73e)
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* The `simul_replic` option of the `stoch_simul` command would not store the binary file in the `Output` folder (bug fixed in 6805cad6)
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* Problems with Ramsey policy (`ramsey_model`/`ramsey_policy` commands):
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+ steady state files would not work when auxiliary variables included Lagrange multipliers (bug fixed in 21004adf)
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+ for linear competitive equilibrium laws of motion, welfare evaluated at higher order was erroneously equated to steady state welfare (bug fixed in b5c74199)
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* The `discretionary_policy` command would not always correctly infer the number of instruments and equations, leading to spurious error messages (bug fixed in e9a19024)
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* Perfect foresight simulations of purely forward or backward models would crash if complex numbers were encountered (bug fixed in 74dc4f81)
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* When using both `block` and `bytecode` options of the `model` block, if the model was such that a sufficiently complex algebraic expression appeared both in the residuals and in the derivatives, leading to the creation of a temporary term, then the results could be incorrect under some circumstances (bug fixed in preprocessor@85a0208e64a3c553987fb81748fe8d7d9bade384)
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* When using the `bytecode` option of the `model` block, leads of more than +127 or lags of less than -128 were not correctly handled (bug fixed in preprocessor@7bcabed20b264ad3359bb6462b15e65b2ad6acac)
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* Problems with the solver under occasionally binding constraints (`occbin_solver` command):
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+ when solving the baseline regime, it would not properly handle errors like Blanchard-Kahn violations (bug fixed in 6536e135)
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+ the piecewise linear Kalman filter (PKF) would crash if the model solution could not be computed for a parameter draw (bug fixed in 0f333f29 and c623696b)
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+ the `oo_.FilteredVariablesKStepAhead` and `oo_.UpdatedVariables` MATLAB/Octave variables would contain the steady state twice (bug fixed in 12c4e03d)
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+ the inversion filter would crash if the `filter_step_ahead` or `state_uncertainty` options were requested (bug fixed in 622f8316)
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+ the PKF would crash if `filter_step_ahead=1` was specified (bug fixed in 28165502)
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+ the PKF would crash if the `state_uncertainty` option was specified together with the `smoother_redux` option (bug fixed in 6d03a654)
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+ the last regime before the system is back to normal times in the two-constraints case could be wrongly set, possibly leading to wrong simulations, lack of convergence or crashes (bug fixed in 906062cf).
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* Problems with identification (`identification` command)
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+ with `prior_mc>1` specified, it would incorrectly display the share of rank deficient Jacobians (bug fixed in dbde8294)
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+ it would crash during plotting or displaying identification strength when the necessary identification criteria based on moments could not be computed (bug fixed in 30a6d35f)
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* The `plot_shock_decomposition` command would crash if invalid field names were encountered (bug fixed in 16bc2b3e)
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* The `shock_decomposition` command would not pass specified initial dates to generated plots (bug fixed in 1b4a4c87)
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* Various pathological cases encountered in steady state finding could lead to a crash (bug fixed in 5788f1bc, c9fd266c, c91e1f89, and 5788f1bc)
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* The `solve_algo=0` option of the `steady` command would not honor `tolx` (bug fixed in 40a525ee)
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* In the `dynare_sensitivity` command, stability mapping would not correctly honor the prior bounds (bug fixed in 22795298)
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Bugs fixed in version 5.1
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-------------------------
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