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Make uint32_t to zend_long conversion explicit in unpack() - #24258
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ushevchenko wants to merge 1 commit into
Open
ushevchenko wants to merge 1 commit into
ushevchenko wants to merge 1 commit into
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Problem: In unpack(), a uint32_t value is implicitly converted to zend_long for the L, N and V formats. On 32-bit builds values above INT32_MAX may become negative; the conversion is implementation-defined. Solution: add an explicit (zend_long) cast. The returned values do not change on any platform. Signed-off-by: Uliya Shevchenko <u.shevchenko@fobos-nt.ru> Signed-off-by: Georgij Tsarin <crystarm@altlinux.org>
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Fixes #24257
unpack()converts auint32_ttozend_longimplicitly for theL,NandVformats. On 32-bit builds this conversion is implementation-defined for values aboveINT32_MAX. The signed variant (l) in the same block already uses an explicit cast.This change makes the conversion explicit. The returned values do not change on any platform, so no test was added.
The issue was identified by static analysis (Svace) and has not been reproduced at runtime on a 32-bit build.
Found by Linux Verification Center (portal.linuxtesting.ru) with SVACE.