39 lines
1.3 KiB
Diff
39 lines
1.3 KiB
Diff
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Disable ssp on -nostdlib, -nodefaultlibs and -ffreestanding
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Change the buffer size.
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--- a/gcc/gcc.c 2017-07-04 09:15:57.740793000 +0200
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+++ b/gcc/gcc.c 2018-03-02 13:58:44.387741114 +0100
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@@ -857,6 +857,12 @@ proper position among the other output f
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#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
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#endif
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+#ifdef ENABLE_DEFAULT_SSP
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+#define NO_SSP_SPEC "%{nostdlib|nodefaultlibs|ffreestanding:-fno-stack-protector} "
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+#else
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+#define NO_SSP_SPEC ""
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+#endif
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+
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#ifndef LINK_SSP_SPEC
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#ifdef TARGET_LIBC_PROVIDES_SSP
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#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
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@@ -1131,7 +1148,7 @@ static const char *cc1_options =
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%{-version:--version}\
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%{-help=*:--help=%*}\
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%{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
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- %{fsyntax-only:-o %j} %{-param*}\
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+ %{fsyntax-only:-o %j} %{-param*} " NO_SSP_SPEC "\
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%{coverage:-fprofile-arcs -ftest-coverage}\
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%{fprofile-arcs|fprofile-generate*|coverage:\
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%{!fprofile-update=singel:\
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--- a/gcc/params.def 2016-03-30 09:47:40.000000000 +0200
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+++ b/gcc/params.def 2016-09-19 12:56:58.443179039 +0200
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@@ -673,7 +673,7 @@ DEFPARAM (PARAM_INTEGER_SHARE_LIMIT,
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DEFPARAM (PARAM_SSP_BUFFER_SIZE,
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"ssp-buffer-size",
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"The lower bound for a buffer to be considered for stack smashing protection.",
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- 8, 1, 0)
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+ 4, 1, 0)
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DEFPARAM (PARAM_MIN_SIZE_FOR_STACK_SHARING,
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"min-size-for-stack-sharing",
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