static struct test tests[] = {
{ "HAVE_ALIGNOF", INSIDE_MAIN, NULL,
"return __alignof__(double) > 0 ? 0 : 1;" },
+ { "HAVE_ASPRINTF", DEFINES_FUNC, NULL,
+ "#define _GNU_SOURCE\n"
+ "#include <stdio.h>\n"
+ "static char *func(int x) {"
+ " char *p;\n"
+ " if (asprintf(&p, \"%u\", x) == -1) p = NULL;"
+ " return p;\n"
+ "}" },
{ "HAVE_ATTRIBUTE_COLD", DEFINES_FUNC, NULL,
"static int __attribute__((cold)) func(int x) { return x; }" },
{ "HAVE_ATTRIBUTE_CONST", DEFINES_FUNC, NULL,
" return mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);\n"
"}" },
{ "HAVE_NESTED_FUNCTIONS", DEFINES_FUNC, NULL,
- "static int func(int val) {\n"
+ "void (*func(int val))(int);\n"
+ "void (*func(int val))(int) {\n"
" auto void add(int val2);\n"
" void add(int val2) { val += val2; }\n"
- " add(7);\n"
- " return val;\n"
- "}" },
+ " return add;\n"
+ "}\n" },
{ "HAVE_STATEMENT_EXPR", INSIDE_MAIN, NULL,
"return ({ int x = argc; x == argc ? 0 : 1; });" },
{ "HAVE_TYPEOF", INSIDE_MAIN, NULL,
unlink(INPUT_FILE);
cmd[strlen(cmd) - strlen(" -o " OUTPUT_FILE " " INPUT_FILE)] = '\0';
- printf("#ifndef CCAN_CONFIG_H\n"
- "#define CCAN_CONFIG_H\n"
- "/* Generated by CCAN configurator */\n");
+ printf("/* Generated by CCAN configurator */\n"
+ "#ifndef CCAN_CONFIG_H\n"
+ "#define CCAN_CONFIG_H\n");
+ printf("#define _GNU_SOURCE /* Always use GNU extensions. */\n");
printf("#define CCAN_COMPILER \"%s\"\n", argv[1]);
printf("#define CCAN_CFLAGS \"%s\"\n\n", cmd + strlen(argv[1]) + 1);
for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)