gcc tries to fetch patches from obsolete SRC_URI after retirement (and reasons I do not know) of developers https://dev.gentoo.org/~blueness/dist/bounds-checking-gcc-3.3.6-1.00-r2.patch.bz2 https://dev.gentoo.org/~blueness/dist/bounds-checking-gcc-3.4.4-1.00.1.patch.bz2 https://dev.gentoo.org/~blueness/dist/gcc-2.95.3-patches-1.4.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-3.3.6-patches-1.9.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-3.3.6-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-3.4.5-uclibc-patches-1.1.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-3.4.6-patches-1.8.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.0.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.0.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.1.2-patches-1.6.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.1.2-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.2.4-patches-1.4.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.2.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.3.6-patches-1.2.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.3.6-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.4.7-patches-1.3.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.4.7-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.5.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.5.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.6.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.6.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.7.4-patches-1.4.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.7.4-piepatches-v0.5.5.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.7.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.8.5-patches-1.3.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.8.5-piepatches-v0.6.2.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-4.9.4-patches-1.2.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-5.4.0-patches-1.7.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-5.4.0-piepatches-v0.6.5.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-5.4.0-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-6.4.0-patches-1.1.tar.bz2 https://dev.gentoo.org/~blueness/dist/gcc-7.1.0-patches-1.1.tar.bz2 https://dev.gentoo.org/~rhill/dist/bounds-checking-gcc-3.3.6-1.00-r2.patch.bz2 https://dev.gentoo.org/~rhill/dist/bounds-checking-gcc-3.4.4-1.00.1.patch.bz2 https://dev.gentoo.org/~rhill/dist/gcc-2.95.3-patches-1.4.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-3.3.6-patches-1.9.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-3.4.6-patches-1.8.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.0.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.1.2-patches-1.6.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.2.4-patches-1.4.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.3.6-patches-1.2.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.4.7-patches-1.3.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.4.7-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.5.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.6.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.7.4-patches-1.4.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.8.5-patches-1.3.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.8.5-piepatches-v0.6.2.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.8.5-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.9.4-patches-1.2.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.9.4-piepatches-v0.6.4.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-4.9.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-5.4.0-patches-1.7.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-5.4.0-piepatches-v0.6.5.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-5.4.0-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-6.4.0-patches-1.1.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-6.4.0-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~rhill/dist/gcc-7.1.0-patches-1.1.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/bounds-checking-gcc-3.3.6-1.00-r2.patch.bz2 https://dev.gentoo.org/~slyfox/distfiles/bounds-checking-gcc-3.4.4-1.00.1.patch.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-2.95.3-patches-1.4.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-3.3.6-patches-1.9.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-3.3.6-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-3.4.5-uclibc-patches-1.1.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-3.4.6-patches-1.8.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.0.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.0.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.1.2-patches-1.6.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.1.2-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.2.4-patches-1.4.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.2.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.3.6-patches-1.2.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.3.6-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.4.7-patches-1.3.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.4.7-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.5.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.5.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.6.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.6.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.7.4-patches-1.4.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.7.4-piepatches-v0.5.5.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.7.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.8.5-patches-1.3.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.8.5-piepatches-v0.6.2.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.8.5-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.9.4-piepatches-v0.6.4.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-4.9.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-5.4.0-piepatches-v0.6.5.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-5.4.0-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-6.4.0-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~slyfox/distfiles/gcc-7.1.0-patches-1.1.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/bounds-checking-gcc-3.3.6-1.00-r2.patch.bz2 https://dev.gentoo.org/~tamiko/distfiles/bounds-checking-gcc-3.4.4-1.00.1.patch.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-2.95.3-patches-1.4.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-3.3.6-patches-1.9.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-3.3.6-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-3.4.5-uclibc-patches-1.1.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-3.4.6-patches-1.8.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.0.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.0.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.1.2-patches-1.6.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.1.2-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.2.4-patches-1.4.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.2.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.3.6-patches-1.2.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.3.6-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.4.3-specs-0.2.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.4.7-patches-1.3.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.4.7-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.5.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.5.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.6.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.6.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.7.4-patches-1.4.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.7.4-piepatches-v0.5.5.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.7.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.8.5-patches-1.3.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.8.5-piepatches-v0.6.2.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.8.5-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.9.4-patches-1.2.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.9.4-piepatches-v0.6.4.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-4.9.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-5.4.0-patches-1.7.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-5.4.0-piepatches-v0.6.5.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-5.4.0-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-6.4.0-patches-1.1.tar.bz2 https://dev.gentoo.org/~tamiko/distfiles/gcc-6.4.0-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~vapier/dist/gcc-4.8.5-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~vapier/dist/gcc-4.9.4-patches-1.2.tar.bz2 https://dev.gentoo.org/~vapier/dist/gcc-4.9.4-piepatches-v0.6.4.tar.bz2 https://dev.gentoo.org/~vapier/dist/gcc-4.9.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~vapier/dist/gcc-5.4.0-patches-1.7.tar.bz2 https://dev.gentoo.org/~vapier/dist/gcc-6.4.0-patches-1.1.tar.bz2 https://dev.gentoo.org/~vapier/dist/gcc-6.4.0-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~vapier/dist/gcc-7.1.0-patches-1.1.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/bounds-checking-gcc-3.3.6-1.00-r2.patch.bz2 https://dev.gentoo.org/~zorry/patches/gcc/bounds-checking-gcc-3.4.4-1.00.1.patch.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-2.95.3-patches-1.4.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-3.3.6-patches-1.9.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-3.3.6-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-3.4.5-uclibc-patches-1.1.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-3.4.6-patches-1.8.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.0.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.0.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.1.2-patches-1.6.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.1.2-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.2.4-patches-1.4.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.2.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.3.6-patches-1.2.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.3.6-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.4.7-patches-1.3.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.4.7-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.5.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.5.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.6.4-patches-1.3.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.6.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.7.4-patches-1.4.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.7.4-piepatches-v0.5.5.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.7.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.8.5-patches-1.3.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.8.5-piepatches-v0.6.2.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.8.5-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.9.4-patches-1.2.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.9.4-piepatches-v0.6.4.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-4.9.4-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-5.4.0-patches-1.7.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-5.4.0-piepatches-v0.6.5.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-5.4.0-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-6.4.0-patches-1.1.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-6.4.0-uclibc-patches-1.0.tar.bz2 https://dev.gentoo.org/~zorry/patches/gcc/gcc-7.1.0-patches-1.1.tar.bz2 http://www.opensource.apple.com/darwinsource/tarballs/other/gcc-5666.3.tar.gz http://www.opensource.apple.com/darwinsource/tarballs/other/libstdcxx-16.tar.gz http://www.opensource.apple.com/darwinsource/tarballs/other/libstdcxx-39.tar.gz
The fetch does not fail, right? Each path should have a fallback path and should have a mirrored version of the file already. Here is how list of fallbacks is built for gcc: https://gitweb.gentoo.org/repo/gentoo.git/tree/eclass/toolchain.eclass#n240
Hi Sergei, thank you for the link. Now I understand what happens. Some day in a far, far future we will have a common folder for all distfiles and are not forced to these workarounds. Sorry for the noise and a happy new year.