https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86606
Bug ID: 86606 Summary: Concurrent source files do not work with --save-temps option Product: gcc Version: 9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: driver Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org CC: amker at gcc dot gnu.org Target Milestone: --- Following causes troubles with --save-temps: $ cat a.c int foo(); int main() { return foo(); } $ cat x/a.c int foo() { return 0; } $ gcc a.c x/a.c (works fine) but: $ gcc a.c x/a.c --save-temps a.o: In function `foo': a.c:(.text+0x0): multiple definition of `foo' a.o:a.c:(.text+0x0): first defined here /usr/lib64/gcc/x86_64-suse-linux/8/../../../../lib64/crt1.o: In function `_start': /home/abuild/rpmbuild/BUILD/glibc-2.27/csu/../sysdeps/x86_64/start.S:104: undefined reference to `main' collect2: error: ld returned 1 exit status