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     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gcc/stuff/patches/002_all_default-relro.patch	Mon Jun 29 17:17:08 2020 +0100
     1.3 @@ -0,0 +1,33 @@
     1.4 +# Turn on -Wl,-z,relro,-z,now by default.
     1.5 +
     1.6 +---
     1.7 + gcc/doc/invoke.texi |    3 +++
     1.8 + gcc/gcc.c           |    1 +
     1.9 + 2 files changed, 4 insertions(+), 0 deletions(-)
    1.10 +
    1.11 +Index: b/gcc/doc/invoke.texi
    1.12 +===================================================================
    1.13 +--- a/gcc/doc/invoke.texi
    1.14 ++++ b/gcc/doc/invoke.texi
    1.15 +@@ -11424,6 +11424,9 @@ For example, @option{-Wl,-Map,output.map
    1.16 + linker.  When using the GNU linker, you can also get the same effect with
    1.17 + @option{-Wl,-Map=output.map}.
    1.18 + 
    1.19 ++NOTE: In Alpine Linux, for LDFLAGS, the option
    1.20 ++@option{-Wl,-z,relro,now} is used.  To disable, use @option{-Wl,-z,norelro}.
    1.21 ++
    1.22 + @item -u @var{symbol}
    1.23 + @opindex u
    1.24 + Pretend the symbol @var{symbol} is undefined, to force linking of
    1.25 +Index: b/gcc/gcc.c
    1.26 +===================================================================
    1.27 +--- a/gcc/gcc.c
    1.28 ++++ b/gcc/gcc.c
    1.29 +@@ -890,6 +890,7 @@ proper position among the other output f
    1.30 +    "%{flto|flto=*:%<fcompare-debug*} \
    1.31 +     %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
    1.32 +    "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
    1.33 ++   "-z relro -z now " \
    1.34 +    "%X %{o*} %{e*} %{N} %{n} %{r}\
    1.35 +     %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
    1.36 +     %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\