expr: fix eager evaluation of parenthesized dead branches#11395
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* tests/expr/expr.pl: Add tests to verify that short-circuit evaluation of | and & correctly skips parenthesized dead branches, including nested parenthesized expressions containing division by zero. uutils/coreutils#11395
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* tests/expr/expr.pl: Add tests to verify that short-circuit evaluation of | and & correctly skips parenthesized dead branches, including nested parenthesized expressions containing division by zero. uutils/coreutils#11395 coreutils/coreutils#238
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Co-authored-by: Sylvestre Ledru <sylvestre@debian.org>
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uutils
exprevaluates parenthesized subexpressions during parsing, so arithmetic errors in dead|and&branches are raised before short-circuiting. GNU parses those branches without forcing evaluation and only evaluates when the branch is actually needed.Reproduction Steps
Impact
Guarded expressions can fail with hard errors instead of boolean results, which breaks GNU-compatible shell control flow and error handling.