On 3/15/21 4:42 PM, Thomas Huth wrote: > On 15/03/2021 16.14, Christian Borntraeger wrote: >> For some time now I do see the following, when I compile x86-softmmu >> on s390: >> >> FAILED: libcommon.fa.p/hw_intc_i8259.c.o >> cc -Ilibcommon.fa.p -I. -I.. -Iqapi -Itrace -Iui -Iui/shader >> -I/usr/include/capstone -I/usr/include/glib-2.0 >> -I/usr/lib64/glib-2.0/include -I/usr/include/libmount >> -I/usr/include/blkid -I/usr/include/gio-unix-2.0 >> -I/usr/include/libusb-1.0 -I/usr/include/vte-2.91 >> -I/usr/include/pango-1.0 -I/usr/include/harfbuzz >> -I/usr/include/freetype2 -I/usr/include/libpng16 >> -I/usr/include/fribidi -I/usr/include/libxml2 -I/usr/include/cairo >> -I/usr/include/pixman-1 -I/usr/include/gtk-3.0 >> -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/atk-1.0 >> -I/usr/include/at-spi2-atk/2.0 -I/usr/include/dbus-1.0 >> -I/usr/lib64/dbus-1.0/include -I/usr/include/at-spi-2.0 >> -I/usr/include/virgl -I/usr/include/p11-kit-1 -I/usr/include/SDL2 >> -I/usr/include/cacard -I/usr/include/nss3 -I/usr/include/nspr4 >> -I/usr/include/slirp -fdiagnostics-color=auto -pipe -Wall >> -Winvalid-pch -Werror -std=gnu99 -O2 -g -isystem >> /home/cborntra/REPOS/qemu/linux-headers -isystem linux-headers -iquote >> . -iquote /home/cborntra/REPOS/qemu -iquote >> /home/cborntra/REPOS/qemu/include -iquote >> /home/cborntra/REPOS/qemu/disas/libvixl -iquote >> /home/cborntra/REPOS/qemu/tcg/s390 -iquote >> /home/cborntra/REPOS/qemu/accel/tcg -pthread -U_FORTIFY_SOURCE >> -D_FORTIFY_SOURCE=2 -m64 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 >> -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef >> -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common >> -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits >> -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers >> -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined >> -Wimplicit-fallthrough=2 -Wno-missing-include-dirs >> -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIC >> -DSTRUCT_IOVEC_DEFINED -D_REENTRANT -Wno-undef -D_DEFAULT_SOURCE >> -D_XOPEN_SOURCE=600 -DNCURSES_WIDECHAR -MD -MQ >> libcommon.fa.p/hw_intc_i8259.c.o -MF >> libcommon.fa.p/hw_intc_i8259.c.o.d -o libcommon.fa.p/hw_intc_i8259.c.o >> -c ../hw/intc/i8259.c >> ../hw/intc/i8259.c: In function ‘pic_read_irq’: >> ../hw/intc/i8259.c:203:13: error: ‘irq2’ may be used uninitialized in >> this function [-Werror=maybe-uninitialized] >> 203 | irq = irq2 + 8; >> | ~~~~^~~~~~~~~~ >> cc1: all warnings being treated as errors >> >> Due to other compile warnings I find this hard to bisect. Has anyone >> seen this as well? > > I've never seen this warnings so far... which compiler version is this? > Looking at the code, it seems to be a false positive to me.
https://www.mail-archive.com/qemu-devel@nongnu.org/msg599522.html =)
