https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93219
Bug ID: 93219 Summary: unused return value in affinity-fmt.c Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libgomp Assignee: unassigned at gcc dot gnu.org Reporter: roland.illig at gmx dot de CC: jakub at gcc dot gnu.org Target Milestone: --- From a pkgsrc bulk build on RedHat EL 6 on x86_64: ../../../gcc-9.2.0/libgomp/affinity-fmt.c: In function 'gomp_print_string': ../../../gcc-9.2.0/libgomp/affinity-fmt.c:43:3: error: ignoring return value of 'fwrite', declared with attribute warn_unused_result [-Werror=unused-result] 43 | fwrite (str, 1, len, stderr); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ echo timestamp > stamp-pb cc1: all warnings being treated as errors