Annocheck: Add test for the presence of unicode characters in identifiers.
Resolves: #2018850
This commit is contained in:
parent
8b558039b8
commit
bec0fb1f02
11
annobin.spec
11
annobin.spec
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@ -2,7 +2,7 @@
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Name: annobin
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Name: annobin
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Summary: Annotate and examine compiled binary files
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Summary: Annotate and examine compiled binary files
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Version: 9.87
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Version: 9.87
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Release: 3%{?dist}
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Release: 4%{?dist}
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License: GPLv3+
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License: GPLv3+
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# Maintainer: nickc@redhat.com
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# Maintainer: nickc@redhat.com
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# Web Page: https://sourceware.org/annobin/
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# Web Page: https://sourceware.org/annobin/
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@ -63,7 +63,8 @@ Source: https://nickc.fedorapeople.org/annobin-%{version}.tar.xz
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# Patch01: annobin-foo.patch
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# Patch01: annobin-foo.patch
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# We need to force use of legacy pass manager until annobin is ported to the new
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# We need to force use of legacy pass manager until annobin is ported to the new
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# pass manager.
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# pass manager.
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Patch0: 0001-llvm-plugin-Add-flegacy-pass-manager-option-to-the-t.patch
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Patch01: 0001-llvm-plugin-Add-flegacy-pass-manager-option-to-the-t.patch
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Patch02: annobin.unicode.patch
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#---------------------------------------------------------------------------------
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#---------------------------------------------------------------------------------
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@ -290,6 +291,7 @@ fi
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echo "Requires: (gcc >= %{gcc_major} and gcc < %{gcc_next})"
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echo "Requires: (gcc >= %{gcc_major} and gcc < %{gcc_next})"
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%autosetup -p1
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%autosetup -p1
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chmod +x tests/unicode-test
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# The plugin has to be configured with the same arcane configure
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# The plugin has to be configured with the same arcane configure
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# scripts used by gcc. Hence we must not allow the Fedora build
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# scripts used by gcc. Hence we must not allow the Fedora build
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@ -463,10 +465,13 @@ fi
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#---------------------------------------------------------------------------------
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#---------------------------------------------------------------------------------
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%changelog
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%changelog
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* Wed Nov 10 2021 Nick Clifton <nickc@redhat.com> - 9.87-4
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- Annocheck: Add test for the presence of unicode characters in identifiers.
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* Tue Nov 09 2021 Tom Stellard <tstellar@redhat.com> - 9.87-3
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* Tue Nov 09 2021 Tom Stellard <tstellar@redhat.com> - 9.87-3
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- Rebuild for llvm-13.0.0
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- Rebuild for llvm-13.0.0
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* Wed Aug 16 2021 Tom Stellard <tstellar@redhat.com> - 9.87-2
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* Mon Aug 16 2021 Tom Stellard <tstellar@redhat.com> - 9.87-2
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- Rebuild for LLVM 13.0.0-rc1
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- Rebuild for LLVM 13.0.0-rc1
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* Mon Aug 16 2021 Nick Clifton <nickc@redhat.com> - 9.87-1
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* Mon Aug 16 2021 Nick Clifton <nickc@redhat.com> - 9.87-1
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@ -0,0 +1,404 @@
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diff -rupN annobin.orig/Makefile.in annobin-9.87/Makefile.in
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--- annobin.orig/Makefile.in 2021-11-10 14:34:16.366259510 +0000
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+++ annobin-9.87/Makefile.in 2021-11-10 14:35:15.947890504 +0000
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@@ -323,6 +323,7 @@ plugindir = @plugindir@
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prefix = @prefix@
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program_transform_name = @program_transform_name@
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psdir = @psdir@
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+runstatedir = @runstatedir@
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sbindir = @sbindir@
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sharedstatedir = @sharedstatedir@
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srcdir = @srcdir@
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diff -rupN annobin.orig/annocheck/Makefile.in annobin-9.87/annocheck/Makefile.in
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--- annobin.orig/annocheck/Makefile.in 2021-11-10 14:34:16.368259498 +0000
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+++ annobin-9.87/annocheck/Makefile.in 2021-11-10 14:35:15.948890497 +0000
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@@ -314,6 +314,7 @@ plugindir = @plugindir@
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prefix = @prefix@
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program_transform_name = @program_transform_name@
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psdir = @psdir@
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+runstatedir = @runstatedir@
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sbindir = @sbindir@
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sharedstatedir = @sharedstatedir@
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srcdir = @srcdir@
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diff -rupN annobin.orig/annocheck/hardened.c annobin-9.87/annocheck/hardened.c
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--- annobin.orig/annocheck/hardened.c 2021-11-10 14:34:16.368259498 +0000
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+++ annobin-9.87/annocheck/hardened.c 2021-11-10 14:35:53.677656812 +0000
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@@ -40,6 +40,7 @@
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#define SOURCE_STRING_SECTION "string section"
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#define SOURCE_COMMENT_SECTION "comment section"
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#define SOURCE_RODATA_SECTION ".rodata section"
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+#define SOURCE_SYMBOL_SECTION "symbol section"
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#define GOLD_COLOUR "\e[33;40m"
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#define RED_COLOUR "\x1B[31;47m"
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@@ -208,6 +209,7 @@ enum test_index
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TEST_STACK_REALIGN,
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TEST_TEXTREL,
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TEST_THREADS,
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+ TEST_UNICODE,
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TEST_WARNINGS,
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TEST_WRITEABLE_GOT,
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@@ -252,6 +254,7 @@ static test tests [TEST_MAX] =
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TEST (stack-realign, STACK_REALIGN, "Compiled with -mstackrealign (i686 only)"),
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TEST (textrel, TEXTREL, "There are no text relocations in the binary"),
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TEST (threads, THREADS, "Compiled with -fexceptions"),
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+ TEST (unicode, UNICODE, "No unicode symbol names"),
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TEST (warnings, WARNINGS, "Compiled with -Wall"),
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TEST (writeable-got, WRITEABLE_GOT, "The .got section is not writeable"),
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};
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@@ -1067,6 +1070,11 @@ interesting_sec (annocheck_data * da
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if (streq (sec->secname, ".gdb_index"))
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per_file.debuginfo_file = true;
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+ if (tests[TEST_UNICODE].enabled
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+ && (sec->shdr.sh_type == SHT_SYMTAB
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+ || sec->shdr.sh_type == SHT_DYNSYM))
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+ return true;
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+
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if (streq (sec->secname, ".text"))
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{
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/* Separate debuginfo files have a .text section with a non-zero
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@@ -3086,6 +3094,64 @@ check_code_section (annocheck_data *
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}
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static bool
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+contains_suspicious_characters (const unsigned char * name)
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+{
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+ uint i;
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+ uint len = strlen ((const char *) name);
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+
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+ /* FIXME: Test that locale is UTF-8. */
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+
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+ for (i = 0; i < len; i++)
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+ {
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+ unsigned char c = name[i];
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+
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+ if (isgraph (c))
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+ continue;
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+
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+ /* Control characters are always suspect. So are spaces and DEL */
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+ if (iscntrl (c) || c == ' ' || c == 0x7f)
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+ return true;
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+
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+ if (c < 0x7f) /* This test is probably redundant. */
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+ continue;
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+
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+ return true;
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+ }
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+
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+ return false;
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+}
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+
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+static bool
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+check_symbol_section (annocheck_data * data, annocheck_section * sec)
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+{
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+ if (! tests[TEST_UNICODE].enabled)
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+ return true;
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+
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+ /* Scan the symbols looking for non-ASCII characters in their names
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+ that might cause problems. Note - we do not examine the string
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+ tables directly as there are perfectly legitimate reasons why these
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+ characters might appear in strings. But when they are used for
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+ identifier names, their use is ... problematic. */
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+ GElf_Sym sym;
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+ uint symndx;
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+
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+ for (symndx = 1; gelf_getsym (sec->data, symndx, & sym) != NULL; symndx++)
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+ {
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+ const char * symname = elf_strptr (data->elf, sec->shdr.sh_link, sym.st_name);
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+
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+ if (contains_suspicious_characters ((const unsigned char *) symname))
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+ {
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+ fail (data, TEST_UNICODE, SOURCE_SYMBOL_SECTION, "suspicious characters were found in a symbol name");
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+ einfo (VERBOSE, "%s: info: symname: '%s', (%lu bytes long) in section: %s",
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+ get_filename (data), symname, (unsigned long) strlen (symname), sec->secname);
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+ if (!BE_VERBOSE)
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+ break;
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+ }
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+ }
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+ return true;
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+}
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+
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+static bool
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check_sec (annocheck_data * data,
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annocheck_section * sec)
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{
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@@ -3096,6 +3162,8 @@ check_sec (annocheck_data * data,
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selected in interesting_sec(). */
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switch (sec->shdr.sh_type)
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{
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+ case SHT_SYMTAB:
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+ case SHT_DYNSYM: return check_symbol_section (data, sec);
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case SHT_NOTE: return check_note_section (data, sec);
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case SHT_STRTAB: return check_string_section (data, sec);
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case SHT_DYNAMIC: return check_dynamic_section (data, sec);
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@@ -3823,6 +3891,7 @@ finish (annocheck_data * data)
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case TEST_RWX_SEG:
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case TEST_TEXTREL:
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case TEST_THREADS:
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+ case TEST_UNICODE:
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case TEST_WRITEABLE_GOT:
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/* The absence of a result for these tests actually means that they have passed. */
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pass (data, i, SOURCE_FINAL_SCAN, NULL);
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diff -rupN annobin.orig/configure annobin-9.87/configure
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--- annobin.orig/configure 2021-11-10 14:34:16.366259510 +0000
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+++ annobin-9.87/configure 2021-11-10 14:35:15.950890485 +0000
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@@ -765,6 +765,7 @@ infodir
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docdir
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oldincludedir
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includedir
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+runstatedir
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localstatedir
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sharedstatedir
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sysconfdir
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@@ -863,6 +864,7 @@ datadir='${datarootdir}'
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sysconfdir='${prefix}/etc'
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sharedstatedir='${prefix}/com'
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localstatedir='${prefix}/var'
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+runstatedir='${localstatedir}/run'
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includedir='${prefix}/include'
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oldincludedir='/usr/include'
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docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
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@@ -1115,6 +1117,15 @@ do
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| -silent | --silent | --silen | --sile | --sil)
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silent=yes ;;
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+ -runstatedir | --runstatedir | --runstatedi | --runstated \
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+ | --runstate | --runstat | --runsta | --runst | --runs \
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+ | --run | --ru | --r)
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+ ac_prev=runstatedir ;;
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+ -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
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+ | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
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+ | --run=* | --ru=* | --r=*)
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+ runstatedir=$ac_optarg ;;
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+
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-sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
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ac_prev=sbindir ;;
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-sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
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@@ -1252,7 +1263,7 @@ fi
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for ac_var in exec_prefix prefix bindir sbindir libexecdir datarootdir \
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datadir sysconfdir sharedstatedir localstatedir includedir \
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oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
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- libdir localedir mandir
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+ libdir localedir mandir runstatedir
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do
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eval ac_val=\$$ac_var
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# Remove trailing slashes.
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@@ -1405,6 +1416,7 @@ Fine tuning of the installation director
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--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
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--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
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--localstatedir=DIR modifiable single-machine data [PREFIX/var]
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+ --runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run]
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--libdir=DIR object code libraries [EPREFIX/lib]
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--includedir=DIR C header files [PREFIX/include]
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--oldincludedir=DIR C header files for non-gcc [/usr/include]
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diff -rupN annobin.orig/doc/Makefile.in annobin-9.87/doc/Makefile.in
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--- annobin.orig/doc/Makefile.in 2021-11-10 14:34:16.366259510 +0000
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+++ annobin-9.87/doc/Makefile.in 2021-11-10 14:35:15.951890479 +0000
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@@ -329,6 +329,7 @@ plugindir = @plugindir@
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prefix = @prefix@
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program_transform_name = @program_transform_name@
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psdir = @psdir@
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+runstatedir = @runstatedir@
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sbindir = @sbindir@
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sharedstatedir = @sharedstatedir@
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srcdir = @srcdir@
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diff -rupN annobin.orig/doc/annobin.info annobin-9.87/doc/annobin.info
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--- annobin.orig/doc/annobin.info 2021-11-10 14:34:16.366259510 +0000
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+++ annobin-9.87/doc/annobin.info 2021-11-10 14:35:15.951890479 +0000
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@@ -751,6 +751,7 @@ File: annobin.info, Node: Hardened, Ne
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[-skip-stack-realign]
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[-skip-textrel]
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[-skip-threads]
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+ [-skip-unicode]
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[-skip-warnings]
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[-skip-writeable-got]
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[-test-NAME]
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@@ -877,6 +878,10 @@ code to support the test.
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Check that the program was built by a production-ready compiler.
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Disabled by '--skip-production'.
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+'Unicode'
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+ This test checks for the presence of multibyte characters in symbol
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+ names, which are unusual and potentially dangerous.
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+
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The tool does support a couple of other command line options as well:
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'--skip-future'
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diff -rupN annobin.orig/doc/annobin.texi annobin-9.87/doc/annobin.texi
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--- annobin.orig/doc/annobin.texi 2021-11-10 14:34:16.366259510 +0000
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+++ annobin-9.87/doc/annobin.texi 2021-11-10 14:35:15.951890479 +0000
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@@ -855,6 +855,7 @@ annocheck
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[@b{--skip-stack-realign}]
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[@b{--skip-textrel}]
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[@b{--skip-threads}]
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+ [@b{--skip-unicode}]
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[@b{--skip-warnings}]
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[@b{--skip-writeable-got}]
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[@b{--test-@var{name}}]
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@@ -996,6 +997,11 @@ Check that the program makes consistent
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@item Production Ready Compiler
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Check that the program was built by a production-ready compiler.
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Disabled by @option{--skip-production}.
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+
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+@item Unicode
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+This test checks for the presence of multibyte characters in symbol
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+names, which are unusual and potentially dangerous.
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+
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@end table
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The tool does support a couple of other command line options as well:
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diff -rupN annobin.orig/gcc-plugin/Makefile.in annobin-9.87/gcc-plugin/Makefile.in
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--- annobin.orig/gcc-plugin/Makefile.in 2021-11-10 14:34:16.368259498 +0000
|
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+++ annobin-9.87/gcc-plugin/Makefile.in 2021-11-10 14:35:15.951890479 +0000
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@@ -333,6 +333,7 @@ plugindir = @plugindir@
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prefix = @prefix@
|
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program_transform_name = @program_transform_name@
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psdir = @psdir@
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+runstatedir = @runstatedir@
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sbindir = @sbindir@
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sharedstatedir = @sharedstatedir@
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srcdir = @srcdir@
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diff -rupN annobin.orig/scripts/Makefile.in annobin-9.87/scripts/Makefile.in
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--- annobin.orig/scripts/Makefile.in 2021-11-10 14:34:16.366259510 +0000
|
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+++ annobin-9.87/scripts/Makefile.in 2021-11-10 14:35:15.951890479 +0000
|
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@@ -284,6 +284,7 @@ plugindir = @plugindir@
|
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prefix = @prefix@
|
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program_transform_name = @program_transform_name@
|
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psdir = @psdir@
|
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|
+runstatedir = @runstatedir@
|
||||||
|
sbindir = @sbindir@
|
||||||
|
sharedstatedir = @sharedstatedir@
|
||||||
|
srcdir = @srcdir@
|
||||||
|
diff -rupN annobin.orig/tests/Makefile.am annobin-9.87/tests/Makefile.am
|
||||||
|
--- annobin.orig/tests/Makefile.am 2021-11-10 14:34:16.369259492 +0000
|
||||||
|
+++ annobin-9.87/tests/Makefile.am 2021-11-10 14:35:15.951890479 +0000
|
||||||
|
@@ -22,6 +22,7 @@ TESTS=compile-test \
|
||||||
|
missing-notes-test \
|
||||||
|
active-checks-test \
|
||||||
|
property-note-test \
|
||||||
|
+ unicode-test \
|
||||||
|
hardening-fail-test
|
||||||
|
|
||||||
|
if HAVE_DEBUGINFOD
|
||||||
|
diff -rupN annobin.orig/tests/Makefile.in annobin-9.87/tests/Makefile.in
|
||||||
|
--- annobin.orig/tests/Makefile.in 2021-11-10 14:34:16.369259492 +0000
|
||||||
|
+++ annobin-9.87/tests/Makefile.in 2021-11-10 14:35:15.952890473 +0000
|
||||||
|
@@ -459,6 +459,7 @@ plugindir = @plugindir@
|
||||||
|
prefix = @prefix@
|
||||||
|
program_transform_name = @program_transform_name@
|
||||||
|
psdir = @psdir@
|
||||||
|
+runstatedir = @runstatedir@
|
||||||
|
sbindir = @sbindir@
|
||||||
|
sharedstatedir = @sharedstatedir@
|
||||||
|
srcdir = @srcdir@
|
||||||
|
@@ -479,7 +480,7 @@ TESTS = compile-test abi-test active-che
|
||||||
|
hardening-test instrumentation-test lto-test \
|
||||||
|
missing-notes-test objcopy-test section-size-test \
|
||||||
|
missing-notes-test active-checks-test property-note-test \
|
||||||
|
- hardening-fail-test $(am__append_1)
|
||||||
|
+ unicode-test hardening-fail-test $(am__append_1)
|
||||||
|
all: all-am
|
||||||
|
|
||||||
|
.SUFFIXES:
|
||||||
|
@@ -764,6 +765,13 @@ property-note-test.log: property-note-te
|
||||||
|
$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
|
||||||
|
--log-file $$b.log --trs-file $$b.trs \
|
||||||
|
$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
|
||||||
|
+ "$$tst" $(AM_TESTS_FD_REDIRECT)
|
||||||
|
+unicode-test.log: unicode-test
|
||||||
|
+ @p='unicode-test'; \
|
||||||
|
+ b='unicode-test'; \
|
||||||
|
+ $(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
|
||||||
|
+ --log-file $$b.log --trs-file $$b.trs \
|
||||||
|
+ $(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
|
||||||
|
"$$tst" $(AM_TESTS_FD_REDIRECT)
|
||||||
|
debuginfod-test.log: debuginfod-test
|
||||||
|
@p='debuginfod-test'; \
|
||||||
|
diff -rupN annobin.orig/tests/trick-hello.s annobin-9.87/tests/trick-hello.s
|
||||||
|
--- annobin.orig/tests/trick-hello.s 1970-01-01 01:00:00.000000000 +0100
|
||||||
|
+++ annobin-9.87/tests/trick-hello.s 2021-11-10 14:35:15.947890504 +0000
|
||||||
|
@@ -0,0 +1,33 @@
|
||||||
|
+ .file "trick-hello.c"
|
||||||
|
+ .text
|
||||||
|
+ .section .rodata
|
||||||
|
+.LC0:
|
||||||
|
+ .string "hah, gotcha!"
|
||||||
|
+ .text
|
||||||
|
+ .globl heoll
|
||||||
|
+ .type heoll, %function
|
||||||
|
+heoll:
|
||||||
|
+.LFB0:
|
||||||
|
+ nop
|
||||||
|
+.LFE0:
|
||||||
|
+ .size heoll, .-heoll
|
||||||
|
+ .section .rodata
|
||||||
|
+.LC1:
|
||||||
|
+ .string "Hello world"
|
||||||
|
+ .text
|
||||||
|
+ .globl hello
|
||||||
|
+ .type hello, %function
|
||||||
|
+hello:
|
||||||
|
+.LFB1:
|
||||||
|
+ nop
|
||||||
|
+.LFE1:
|
||||||
|
+ .size hello, .-hello
|
||||||
|
+ .globl main
|
||||||
|
+ .type main, %function
|
||||||
|
+main:
|
||||||
|
+.LFB2:
|
||||||
|
+ nop
|
||||||
|
+.LFE2:
|
||||||
|
+ .size main, .-main
|
||||||
|
+ .ident "GCC: (GNU) 11.2.1 20210728 (Red Hat 11.2.1-1)"
|
||||||
|
+ .section .note.GNU-stack,"",%progbits
|
||||||
|
diff -rupN annobin.orig/tests/unicode-test annobin-9.87/tests/unicode-test
|
||||||
|
--- annobin.orig/tests/unicode-test 1970-01-01 01:00:00.000000000 +0100
|
||||||
|
+++ annobin-9.87/tests/unicode-test 2021-11-10 14:35:15.947890504 +0000
|
||||||
|
@@ -0,0 +1,45 @@
|
||||||
|
+#!/bin/bash
|
||||||
|
+
|
||||||
|
+# Copyright (c) 2021 Red Hat.
|
||||||
|
+#
|
||||||
|
+# This is free software; you can redistribute it and/or modify it
|
||||||
|
+# under the terms of the GNU General Public License as published
|
||||||
|
+# by the Free Software Foundation; either version 3, or (at your
|
||||||
|
+# option) any later version.
|
||||||
|
+#
|
||||||
|
+# It is distributed in the hope that it will be useful, but
|
||||||
|
+# WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
+# GNU General Public License for more details.
|
||||||
|
+
|
||||||
|
+TEST_NAME=unicode
|
||||||
|
+. $srcdir/common.sh
|
||||||
|
+
|
||||||
|
+OPTS="-O2 -g -Wl,-z,now -pie -fpie"
|
||||||
|
+
|
||||||
|
+start_test
|
||||||
|
+
|
||||||
|
+$GCC $OPTS $srcdir/trick-hello.s -o trick-hello.exe
|
||||||
|
+if [ $? != 0 ];
|
||||||
|
+then
|
||||||
|
+ echo "unicode-test: FAIL: Could not compile test source file"
|
||||||
|
+ end_test
|
||||||
|
+ exit 1
|
||||||
|
+fi
|
||||||
|
+
|
||||||
|
+# Run annocheck
|
||||||
|
+
|
||||||
|
+OPTS="--ignore-gaps --skip-all --test-unicode"
|
||||||
|
+
|
||||||
|
+$ANNOCHECK trick-hello.exe $OPTS > unicode.out
|
||||||
|
+grep -e "FAIL: unicode" unicode.out
|
||||||
|
+if [ $? != 0 ];
|
||||||
|
+then
|
||||||
|
+ echo "unicode-test: FAIL: annocheck did not detect suspicious symbol names"
|
||||||
|
+ $ANNOCHECK trick-hello.exe $OPTS --verbose
|
||||||
|
+ end_test
|
||||||
|
+ exit 1
|
||||||
|
+fi
|
||||||
|
+
|
||||||
|
+end_test
|
||||||
|
+
|
Loading…
Reference in New Issue