FIXED: clause/2 and friends: backtracking over clauses can cause a stack-shift, causing the local copy of the environment (was in fr) to be invalid.
FIXED: clause/2 and friends: backtracking over clauses can cause a stack-shift,
causing the local copy of the environment (was in fr) to be invalid.

mndrix/swipl-devel,mndrix/swipl-devel,edechter/swipl-devel,mndrix/swipl-devel,koryonik/swipl-devel,edechter/swipl-devel,edechter/swipl-devel,jn7163/swipl-devel,edechter/swipl-devel,mndrix/swipl-devel,mndrix/swipl-devel,koryonik/swipl-devel,edechter/swipl-devel,jn7163/swipl-devel,koryonik/swipl-devel,jn7163/swipl-devel,koryonik/swipl-devel,jn7163/swipl-devel,jn7163/swipl-devel,koryonik/swipl-devel