Method test_ELF

contrib/devtools/test-symbol-check.py:36–100

(self)

class TestSymbolChecks(unittest.TestCase):
    def test_ELF(self):
        source = 'test1.c'
        executable = 'test1'
        cc = determine_wellknown_cmd('CC', 'gcc')

        # there's no way to do this test for RISC-V at the moment; we build for
        # RISC-V in a glibc 2.27 envinonment and we allow all symbols from 2.27.
        if 'riscv' in get_machine(cc):
            self.skipTest("test not available for RISC-V")

        # nextup was introduced in GLIBC 2.24, so is newer than our supported
        # glibc (2.18), and available in our release build environment (2.24).
        with open(source, 'w', encoding="utf8") as f:
            f.write('''
                #define _GNU_SOURCE
                #include <math.h>

                double nextup(double x);

                int main()
                {
                    nextup(3.14);
                    return 0;
                }
        ''&#x27;)

        self.assertEqual(call_symbol_check(cc, source, executable, ['-lm']),
                (1, executable + ': symbol nextup from unsupported version GLIBC_2.24(3)\n' +
                    executable + ': failed IMPORTED_SYMBOLS'))

        # -lutil is part of the libc6 package so a safe bet that it's installed
        # it's also out of context enough that it's unlikely to ever become a real dependency
        source = 'test2.c'
        executable = 'test2'
        with open(source, 'w', encoding="utf8") as f:
            f.write(''&#x27;
                #include <utmp.h>

                int main()
                {
                    login(0);
                    return 0;
                }
        ''&#x27;)

        self.assertEqual(call_symbol_check(cc, source, executable, ['-lutil']),
                (1, executable + ': libutil.so.1 is not in ALLOWED_LIBRARIES!\n' +
                    executable + ': failed LIBRARY_DEPENDENCIES'))

        # finally, check a simple conforming binary
        source = 'test3.c'
        executable = 'test3'
        with open(source, 'w', encoding="utf8") as f:
            f.write(''&#x27;
                #include <stdio.h>

                int main()
                {