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tests: expr: add short-circuit tests with parenthesized branches

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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.
https://github.com/uutils/coreutils/pull/11395
https://github.com/coreutils/coreutils/pull/238
This commit is contained in:
Sylvestre Ledru
2026-04-03 12:07:44 +02:00
committed by Pádraig Brady
parent 829593317d
commit 793f45e916
1 changed files with 6 additions and 0 deletions
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tests/expr/expr.pl
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@@ -69,6 +69,12 @@ my @Tests =
['andand', '0 \& 1 / 0', {OUT => '0'}, {EXIT => 1}],
['oror', '1 \| 1 / 0', {OUT => '1'}, {EXIT => 0}],
# Short-circuit must also skip parenthesized dead branches.
['or-paren', '1 \| \( 1 / 0 \)', {OUT => '1'}, {EXIT => 0}],
['and-paren', '0 \& \( 1 / 0 \)', {OUT => '0'}, {EXIT => 1}],
['or-nested', '1 \| \( 0 \& \( 1 / 0 \) \)', {OUT => '1'}, {EXIT => 0}],
['and-nested', '0 \& \( 1 \| \( 1 / 0 \) \)', {OUT => '0'}, {EXIT => 1}],
# In 5.1.3 and earlier, this would output the empty string.
['orempty', '"" \| ""', {OUT => '0'}, {EXIT => 1}],