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2018 Aug 21
0
X.Org security advisory: August 21, 2018
...NUL-terminated.
While parsing the response, the length byte is overridden with '\0',
thus the memory area can be used as storage of C strings later on. To
be able to NUL-terminate the last string, the buffer is reserved with
an additional byte of space.
For a boundary check, the variable chend (end of ch) was introduced,
pointing at the end of the buffer which ch initially points to.
Unfortunately there is a difference in handling "the end of ch".
While chend points at the first byte that must not be written to,
the for-loop uses chend as the last byte that can be written to....
2019 Jul 12
4
Unexpected behaviour when comparing (==) long quoted expressions
Hi everyone:
I?m one of the interns at RStudio this summer working on a project that
helps teachers grade student code. I found an unexpected behaviour with
the |==| operator when comparing |quote|d expressions.
Example 1:
|u <- quote(tidyr::gather(key = key, value = value,
new_sp_m014:newrel_f65, na.rm = TRUE)) s <- quote(tidyr::gather(key =
key, value = value,