labels now allow underscored; bug fix

tests/fuzz.c

@@ -0,0 +1,59 @@
+#include <stdio.h>
+#include <stddef.h>
+#include "../src/tinytemplate.h"
+
+/* this lets the source compile without afl-clang-fast/lto */
+#ifndef __AFL_FUZZ_TESTCASE_LEN
+
+ssize_t       fuzz_len;
+unsigned char fuzz_buf[1024000];
+
+#define __AFL_FUZZ_TESTCASE_LEN fuzz_len
+#define __AFL_FUZZ_TESTCASE_BUF fuzz_buf
+//#define __AFL_FUZZ_INIT() void sync(void);
+//#define __AFL_LOOP(x) ((fuzz_len = read(0, fuzz_buf, sizeof(fuzz_buf))) > 0 ? 1 : 0)
+//#define __AFL_INIT() sync()
+
+#endif
+
+__AFL_FUZZ_INIT();
+
+//#pragma clang optimize off
+//#pragma GCC            optimize("O0")
+
+static void callback(void *userp, const char *label, size_t label_len,
+                     const char *str, size_t len)
+{
+    (void) userp;
+    (void) label;
+    (void) label_len;
+    (void) str;
+    (void) len;
+}
+
+int main(void) 
+{
+
+#ifdef __AFL_HAVE_MANUAL_CONTROL
+    __AFL_INIT();
+#endif
+
+    unsigned char *buf = __AFL_FUZZ_TESTCASE_BUF;   // must be after __AFL_INIT
+                                                    // and before __AFL_LOOP!
+    tinytemplate_instr_t program[1024];
+    size_t max_instr = sizeof(program)/sizeof(program[0]);
+
+    while (__AFL_LOOP(10000)) {
+
+        int len = __AFL_FUZZ_TESTCASE_LEN;  // don't use the macro directly in a
+                                            // call!
+
+        tinytemplate_status_t status;
+
+        status = tinytemplate_compile((char*) buf, len, program, max_instr, NULL, NULL, 0);
+        if (status == TINYTEMPLATE_STATUS_DONE)
+            status = tinytemplate_eval((char*) buf, program, NULL, NULL, callback, NULL, 0);
+    }
+
+    return 0;
+}