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Add test for bug GH-16870 (Overly restrictive gmp_pow overflow checks) #16898

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Add test for bug GH-16870 (Overly restrictive gmp_pow overflow checks) #16898

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515640c
Add test for bug GH-16870 (Overly restrictive gmp_pow overflow checks)
GaryAllan Nov 22, 2024
52e504f
Update ext/gmp/tests/gh16870.phpt
GaryAllan Nov 22, 2024
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26 changes: 26 additions & 0 deletions ext/gmp/tests/gh16870.phpt
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Original file line number Diff line number Diff line change
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--TEST--
Bug GH-16870 (Overly restrictive gmp_pow overflow checks)
--EXTENSIONS--
gmp
--XFAIL--
Currently fails after the introduction of overflow warning
--FILE--
<?php
echo '64^11 = 0x', gmp_strval(gmp_pow(64, 11), 16), "\n";
echo '2^31 = 0x', gmp_strval(gmp_pow(2, 31), 16), "\n";
echo '2^32 = 0x', gmp_strval(gmp_pow(2, 32), 16), "\n";
echo '2^64 = 0x', gmp_strval(gmp_pow(2, 64), 16), "\n";
echo '2^128 = 0x', gmp_strval(gmp_pow(2, 128), 16), "\n";
echo '2^512 = 0x', gmp_strval(gmp_pow(2, 512), 16), "\n";
echo '2^1024 = 0x', gmp_strval(gmp_pow(2, 1024), 16), "\n";
echo '2^8192 = 0x', gmp_strval(gmp_pow(2, 8192), 16), "\n";
?>
--EXPECT--
64^11 = 0x40000000000000000
2^31 = 0x80000000
2^32 = 0x100000000
2^64 = 0x10000000000000000
2^128 = 0x100000000000000000000000000000000
2^512 = 0x100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
2^1024 = 0x10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
2^8192 = 0x100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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