Without further ado, the following was found:

Issue:    B<…>int size → B<…int> I<size>

"B<struct mntent *getmntent_r(>int size;\n"
"B<              FILE *restrict >I<streamp>B<,>\n"
"B<              struct mntent *restrict >I<mntbuf>B<,>\n"
"B<              char >I<buf>B<[restrict >I<size>B<], int >I<size>B<);>\n"