Fix segfault on mysqlnd result set error #1858
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This patch fixes bug# 71863 which caused a segfault when the result set contained an error. This occurs becuase the buffered result set does not contain callbacks in its mysqlnd error_info struct and would fail on a null pointer when called with the macro COPY_CLIENT_ERROR. The fix simply copies the error info struct from the row_packet into the buffered result set, as was done before.
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@soda0289 there is the test code in the ticket, could you please add it as a phpt to the PR? Thanks. |
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This test ensures there is no segfault when there is an error on an EXPLAIN SELECT query.
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I have added a test that reproduces the segmentation fault. This error only occurs on master and not on PHP-7.0.5 or PHP-7.0.6. |
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I believe the bug was introduced in this commit 4bb784c. |
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This has now been fixed via 671d22f in a different way (calling mysqlnd_error_info_init). |
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@nikic Will this be merged into PHP-7.1 branch? |
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This patch fixes bug# 71863 which caused a segfault when the result set
contained an error. This occurs becuase the buffered result set does
not contain callbacks in its mysqlnd error_info struct and would fail
on a null pointer when called with the macro COPY_CLIENT_ERROR.
The fix simply copies the error info struct from the row_packet into
the buffered result set, as was done before.