Fix #36365: scandir duplicates file name at every 65535th file #5439
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Since DIR_W32.offset is declared as `uint16_t`, we have an overflow for directories with many entries. This patch changes the field to `uint32_t`.
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Any ABI stability concerns here? |
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Yes, therefore targeting master only. |
nikic
approved these changes
Apr 24, 2020
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Thanks! Applied as 767a77a. |
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Since DIR_W32.offset is declared as
uint16_t, we have an overflow fordirectories with many entries. This patch changes the field to
uint32_t.The test is slow, but if commit 4e8f01c had a respective test case, we wouldn't have had that regression.
Note that there might be room for optimization on 32bit architectures, namely by merging
offsetandfinishedin auint32_tbitfield; not sure if that worth it.