error: patch failed: libio/bits/types/struct_FILE.h:1
error: libio/bits/types/struct_FILE.h: patch does not apply
error: patch failed: libio/fileops.c:1
error: libio/fileops.c: patch does not apply
error: patch failed: libio/genops.c:1
error: libio/genops.c: patch does not apply
error: patch failed: libio/libioP.h:1
error: libio/libioP.h: patch does not apply
error: patch failed: libio/oldfileops.c:1
error: libio/oldfileops.c: patch does not apply
error: patch failed: libio/wfileops.c:1
error: libio/wfileops.c: patch does not apply
error: patch failed: stdio-common/Makefile:1
error: stdio-common/Makefile: patch does not apply
error: stdio-common/tst-ungetc-nomem.c: already exists in index
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config advice.mergeConflict false"
Applying: ungetc: Guarantee single char pushback
Patch failed at 0001 ungetc: Guarantee single char pushback