VirtualAlloc'd bytes not showing consistently in memory window

[Falconerd]

Hi Ryan,

I made a program here in C using VirtualAlloc to allocate some bytes.

When the data written into the bytes straddles the top edge of the memory window, I can see it. Otherwise, it shows all 00.

Here's the code I used:

#include <windows.h>
#include <string.h>

int main(void) {
	char *my_chars = VirtualAlloc(0, 1024, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);

	memset(my_chars, 0xcd, 128);

	__debugbreak();
}

Compiled with: cl /Z7 file.c

This issue does not seem to happen with stdlib malloc

I made a little video showing what I mean:

zzz_2024-11-05_10-24-24.mp4

[ryanfleury]

Thanks for investigating this. This should now be fixed as of 95fe497.