configurator: detect __builtin_cpu_supports.

[ccan] / tools / configurator / configurator.c

diff --git a/tools/configurator/configurator.c b/tools/configurator/configurator.c
index 1386fc90c8d72be6e734eb9f21a2d661b4c6f86c..d676b882329d55706e818eb93884393deb520e31 100644 (file)
--- a/tools/configurator/configurator.c
+++ b/tools/configurator/configurator.c
@@ -488,6 +488,13 @@ static const struct test base_tests[] = {
          "     return worked ? 0 : 1;\n"
          "}\n"
        },
+       { "HAVE_BUILTIN_CPU_SUPPORTS", "__builtin_cpu_supports()",
+         "DEFINES_FUNC", NULL, NULL,
+         "#include <stdbool.h>\n"
+         "static bool func(void) {\n"
+         "     return __builtin_cpu_supports(\"mmx\");\n"
+         "}"
+       },
 };
 
 static void c12r_err(int eval, const char *fmt, ...)
@@ -888,7 +895,8 @@ static void read_tests(size_t num_tests)
 {
        while (read_test(tests + num_tests)) {
                num_tests++;
-               tests = realloc(tests, num_tests * sizeof(tests[0]));
+               tests = realloc(tests, (num_tests + 1) * sizeof(tests[0]));
+               tests[num_tests].name = NULL;
        }
 }