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waldump: fix use-after-free in search_directory().
After closedir() dirent->d_name is not valid anymore. As there alerady are a few places relying on the limited lifetime of pg_waldump, do so here as well, and just pg_strdup() the string. The bug was introduced infc49e24fa6
. Found by UBSan, run locally. Backpatch: 11-, likefc49e24fa6
itself.
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parent
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@ -180,7 +180,7 @@ search_directory(const char *directory, const char *fname)
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if (IsXLogFileName(xlde->d_name))
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{
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fd = open_file_in_directory(directory, xlde->d_name);
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fname = xlde->d_name;
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fname = pg_strdup(xlde->d_name);
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break;
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}
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}
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