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gcc-plugins: remove code for GCC versions older than 4.9

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Documentation/process/changes.rst says the minimal GCC version is 4.9.
Hence, BUILDING_GCC_VERSION is greater than or equal to 4009.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20201202134929.99883-1-masahiroy@kernel.org
This commit is contained in:
Masahiro Yamada 2020-12-02 22:49:29 +09:00 • committed by Kees Cook
parent b650545978
commit af2d22254e
10 changed files with 1 additions and 505 deletions
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6
scripts/gcc-plugins/sancov_plugin.c
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@ -80,10 +80,8 @@ static void sancov_start_unit(void __unused *gcc_data, void __unused *user_data)
nothrow_attr = tree_cons(get_identifier("nothrow"), NULL, NULL);
decl_attributes(&sancov_fndecl, nothrow_attr, 0);
gcc_assert(TREE_NOTHROW(sancov_fndecl));
#if BUILDING_GCC_VERSION > 4005
leaf_attr = tree_cons(get_identifier("leaf"), NULL, NULL);
decl_attributes(&sancov_fndecl, leaf_attr, 0);
#endif
}
__visible int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version)
@ -106,11 +104,7 @@ __visible int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gc
};
/* BBs can be split afterwards?? */
#if BUILDING_GCC_VERSION >= 4009
PASS_INFO(sancov, "asan", 0, PASS_POS_INSERT_BEFORE);
#else
PASS_INFO(sancov, "nrv", 1, PASS_POS_INSERT_BEFORE);
#endif
if (!plugin_default_version_check(version, &gcc_version)) {
error(G_("incompatible gcc/plugin versions"));