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fix '$get_clause_p' whose old implementation was broken by the introduction

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of lookahead indexing
This commit is contained in:
Mark
2023-12-18 09:52:46 -07:00
parent 30f3818c66
commit b943afb7c7
2 changed files with 68 additions and 102 deletions
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17
src/machine/mod.rs
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@@ -925,8 +925,8 @@ impl Machine {
self.machine_st.hb = self.machine_st.heap.len();
self.machine_st.oip = 0;
self.machine_st.iip = 0;
// self.machine_st.oip = 0;
// self.machine_st.iip = 0;
}
self.machine_st.p += offset;
@@ -1010,8 +1010,8 @@ impl Machine {
self.machine_st.heap.truncate(target_h);
self.machine_st.oip = 0;
self.machine_st.iip = 0;
// self.machine_st.oip = 0;
// self.machine_st.iip = 0;
} else {
self.trust_epilogue(offset);
}
@@ -1059,8 +1059,13 @@ impl Machine {
self.machine_st.stack.truncate(b);
self.machine_st.heap.truncate(target_h);
self.machine_st.oip = 0;
self.machine_st.iip = 0;
// these registers don't need to be reset here and MUST NOT be
// (nor in indexed_try to trust_epilogue)! oip could be reset
// without any adverse effects but iip is needed by
// get_clause_p to find the last executed clause/2 clause.
// self.machine_st.oip = 0;
// self.machine_st.iip = 0;
}
#[inline(always)]