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Restrict step size 0 in for loop #1674

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Merged
certik merged 1 commit into from
Apr 7, 2023
Merged

Restrict step size 0 in for loop #1674

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4 changes: 4 additions & 0 deletions src/lpython/semantics/python_ast_to_asr.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4493,6 +4493,10 @@ class BodyVisitor : public CommonVisitor<BodyVisitor> {
int64_t inc_int = 1;
bool is_value_present = ASRUtils::extract_value(inc_value, inc_int);
if (is_value_present) {
if (inc_int == 0) {
throw SemanticError("For loop increment should not be zero.", loc);
}

// Loop end depends upon the sign of m_increment.
// if inc > 0 then: loop_end -=1 else loop_end += 1
ASR::binopType offset_op;
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