Created attachment 886901 [details] build.log.xz (ppc, 21.1.11) Builds fine with -O2 but fails with -Os: [...] ninja: job failed: powerpc-gentoo-linux-musl-gcc -Itest/tests.p -Itest -I../xorg-server-21.1.11/test -IXext -I../xorg-server-21.1.11/Xext -IXi -I../xorg-server-21.1.11/Xi -Icomposite -I../xorg-server-21.1.11/composite -Idamageext -I../xorg-server-21.1.11/damageext -Iexa -I../xorg-server-21.1.11/exa -Ifb -I../xorg-server-21.1.11/fb -Iglamor -I../xorg-server-21.1.11/glamor -Imi -I../xorg-server-21.1.11/mi -Imiext/damage -I../xorg-server-21.1.11/miext/damage -Imiext/shadow -I../xorg-server-21.1.11/miext/shadow -Imiext/sync -I../xorg-server-21.1.11/miext/sync -Idbe -I../xorg-server-21.1.11/dbe -Idri3 -I../xorg-server-21.1.11/dri3 -Iinclude -I../xorg-server-21.1.11/include -Ipresent -I../xorg-server-21.1.11/present -Irandr -I../xorg-server-21.1.11/randr -Irender -I../xorg-server-21.1.11/render -Ixfixes -I../xorg-server-21.1.11/xfixes -Ihw/xfree86/common -I../xorg-server-21.1.11/hw/xfree86/common -Ihw/xfree86/ddc -I../xorg-server-21.1.11/hw/xfree86/ddc -Ihw/xfree86/dri2 -I../xorg-server-21.1.11/hw/xfree86/dri2 -Ihw/xfree86/i2c -I../xorg-server-21.1.11/hw/xfree86/i2c -Ihw/xfree86/int10 -I../xorg-server-21.1.11/hw/xfree86/int10 -Ihw/xfree86/loader -I../xorg-server-21.1.11/hw/xfree86/loader -Ihw/xfree86/modes -I../xorg-server-21.1.11/hw/xfree86/modes -Ihw/xfree86/os-support -I../xorg-server-21.1.11/hw/xfree86/os-support -I../xorg-server-21.1.11/hw/xfree86/os-support/bus -Ihw/xfree86/parser -I../xorg-server-21.1.11/hw/xfree86/parser -Ihw/xfree86/ramdac -I../xorg-server-21.1.11/hw/xfree86/ramdac -Ihw/xfree86/vgahw -I../xorg-server-21.1.11/hw/xfree86/vgahw -I../xorg-server-21.1.11/test/xi1 -I../xorg-server-21.1.11/test/xi2 -I/usr/include/pixman-1 -fdiagnostics-color=always -DNDEBUG -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -std=gnu99 -DHAVE_DIX_CONFIG_H -fno-strict-aliasing -fvisibility=hidden -Wall -Wpointer-arith -Wmissing-declarations -Wformat=2 -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Wbad-function-cast -Wold-style-definition -Wunused -Wuninitialized -Wshadow -Wmissing-noreturn -Wmissing-format-attribute -Wredundant-decls -Werror=implicit -Werror=nonnull -Werror=init-self -Werror=main -Werror=missing-braces -Werror=sequence-point -Werror=return-type -Werror=trigraphs -Werror=array-bounds -Werror=write-strings -Werror=address -Werror=int-to-pointer-cast -Werror=pointer-to-int-cast -Os -mcpu=7450 -mtune=7450 -pipe -DXORG_TESTS -DRES_TESTS -fno-lto -MD -MQ test/tests.p/list.c.o -MF test/tests.p/list.c.o.d -o test/tests.p/list.c.o -c ../xorg-server-21.1.11/test/list.c In file included from ../xorg-server-21.1.11/test/list.c:32: In function 'test_xorg_list_for_each', inlined from 'list_test' at ../xorg-server-21.1.11/test/list.c:383:5: ../xorg-server-21.1.11/include/list.h:311:10: error: array subscript 0 is outside array bounds of 'struct parent[1]' [-Werror=array-bounds=] 311 | &pos->member != (head); \ ../xorg-server-21.1.11/test/list.c:213:5: note: in expansion of macro 'xorg_list_for_each_entr ' 213 | xorg_list_for_each_entry(c, &parent.children, node) { | ^~~~~~~~~~~~~~~~~~~~~~~~ ../xorg-server-21.1.11/test/list.c: In function 'list_test': ../xorg-server-21.1.11/test/list.c:193:19: note: at offset -4 into object 'parent' of size 16 193 | struct parent parent = { 0 }; | ^~~~~~ cc1: some warnings being treated as errors ninja: subcommand failed Probably this is neither GCC 14, musl nor ppc specific so I didn't set blockers up.
Created attachment 886902 [details] emerge --info
These errors are very sensitive to the amount of optimisation done.
