Since I upgraded media-libs/mesa from version 17.0.4 to version 17.1.0_rc4 I
cannot start QupZilla anymore because it produces a segmentation fault. I have
an Intel GPU (Q35 chipset). My GNU/Linux distribution is Gentoo.

# lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 82Q35 Express Integrated
Graphics Controller (rev 02)

# emerge -pv qupzilla mesa

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R    ] www-client/qupzilla-2.1.2::gentoo  USE="dbus -debug
-gnome-keyring -kwallet -libressl -nonblockdialogs" LINGUAS="-ar_SA -bg_BG
-ca_ES -cs_CZ -da_DK -de_DE -el_GR -es_ES -es_MX -es_VE -eu_ES -fa_IR -fi_FI
-fr_FR -gl_ES -he_IL -hr_HR -hu_HU -id_ID -is -it_IT -ja_JP -ka_GE -lg -lt
-lv_LV -nl_NL -nqo -pl_PL -pt_BR -pt_PT -ro_RO -ru_RU -sk_SK -sr -sr@ijekavian
-sr@ijekavianlatin -sr@latin -sv_SE -tr_TR -uk_UA -uz@Latn -zh_CN -zh_HK
-zh_TW" 2,703 KiB
[ebuild   R    ] media-libs/mesa-17.1.0_rc4::gentoo  USE="classic debug dri3
egl gallium gbm nptl -bindist -d3d9 -gles1 -gles2 -llvm -opencl -openmax
-osmesa -pax_kernel -pic (-selinux) -vaapi -valgrind -vdpau -vulkan -wayland
-xa -xvmc" VIDEO_CARDS="i915 intel (-freedreno) -i965 -imx -nouveau -r100 -r200
-r300 -r600 -radeon -radeonsi (-vc4) (-vivante) -vmware" 0 KiB

Total: 2 packages (2 reinstalls), Size of downloads: 2,703 KiB