Adding func_chk.c to test balancing of ENTERFUNC and RETURNFUNC/RETURNFUNC2 statements

tests/func_chk.c

@@ -0,0 +1,49 @@
+/* this can change for balanced ENTERFUNC/RETURNFUNC statements */
+/* RETURNFUNC2 is used when ENTERFUNC is not used in a function */
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, char *argv[])
+{
+    char buf[4096];
+    char buf2[4096];
+    FILE *fp = fopen(argv[1], "r");
+    int linenum = 0;
+    int enterfunc = 0;
+    int infunc = 0;
+    int retval = 0;
+    retval = 0;
+
+    while (fgets(buf, sizeof(buf), fp))
+    {
+        ++linenum;
+        buf[16] = 0;
+
+        if (strstr(buf, "ENTERFUNC;")) { enterfunc = 1; }
+
+        if (enterfunc && strstr(buf, "RETURNFUNC2"))
+        {
+            printf("Line#%d need RETURNFUNC %s\n", linenum, argv[1]);
+            retval = 1;
+        }
+
+        strcpy(buf2, buf);
+        buf2[15] = 0; // truncate the string
+
+        if (!enterfunc && strstr(buf2, "RETURNFUNC("))
+        {
+            printf("Line#%d need RETURNFUNC2 %s\n", linenum, argv[1]);
+            retval = 1;
+        }
+
+        if (strstr(buf2, "RETURNFUNC("))
+        {
+            if (enterfunc == 0) { printf("Line#%d no matching ENTERFUNC %s\n", linenum, argv[1]); }
+
+            enterfunc = 0;
+        }
+    }
+
+    fclose(fp);
+    return retval;
+}