Source: sip4 Version: 4.19.25+dfsg-4 Severity: serious Tags: ftbfs https://buildd.debian.org/status/logs.php?pkg=sip4&ver=4.19.25%2Bdfsg-4%2Bb1
...
/<<PKGBUILDDIR>>/siplib/siplib.c: In function ‘sip_api_get_frame’:
/<<PKGBUILDDIR>>/siplib/siplib.c:13750:22: error: invalid use of undefined type
‘struct _frame’
13750 | frame = frame->f_back;
| ^~
...
