WIP

README.md

@@ -21,12 +21,29 @@ printf("new length: %zu\n", scary_length(a)); //=> 2
 You can push elements with automatic memory extension,
 as much as you want.
 
+Moreover, the `scary_push` function is _generic_ 😱, so this code
+
+```c
+scary_push(&a, 0UL); // Pushing `unsigned long` into an array of `int`!
+```
+
+can produce a warning by default with modern compilers like GCC 12.
+
+<pre><code><b>warning:</b> passing argument 1 of 'scary_push_uint64' from incompatible pointer type [<b>-Wincompatible-pointer-types</b>]
+    scary_push(<b>&a</b>, 0UL);
+               <b>^~</b>
+               <b>|</b>
+               <b>int **</b>
+</code></pre>
+
+You can of course opt-in an option `-Werror` to prevent such typing mistakes.
+
 And you'll see **magic** here:
 
 ```c
 int i = a[1];
 ```
-You can read/write them as an ordinary C array without any overhead 😱😱.
+You can read/write them as ordinary C arrays with **zero**-overhead 😱😱.
 
 ```c
 printf("content: %d\n", i);
@@ -38,9 +55,8 @@ Then it prints `42`. Happy ending. 🤔🤔
 We use [Criterion](https://github.com/Snaipe/Criterion) for tests so
 you'll need to install that before `make test`.
 
-Dear Debian/Ubuntu users: You can install [its
-package](https://packages.debian.org/bookworm/libcriterion-dev) via
-`apt install libcriterion-dev`.
+Dear Debian/Ubuntu users: You can install its package via
+<code>apt install [libcriterion-dev](https://packages.debian.org/stable/libcriterion-dev)</code>.
 
 ## License
 

testlib.c

@@ -22,7 +22,9 @@ Test(libscary, push_and_length) {
 Test(libscary, push) {
     int *a = scary_new(sizeof(int));
     scary_push(&a, 42);
+    scary_push(&a, 0UL);
     cr_expect(eq(sz, 1, scary_length(a)));
+
     scary_free(a);
 
     char *b = scary_new(sizeof(char));
@@ -32,6 +34,10 @@ Test(libscary, push) {
     cr_expect(eq(sz, 2, scary_length(b)));
     cr_expect(eq(chr, 'a', b[0]));
     cr_expect(eq(chr, 'b', b[1]));
+
+
+
+
     scary_free(b);
 }