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Add heap corruption testing #87

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merged 3 commits into from
Jun 8, 2024
Merged

Add heap corruption testing #87

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7937b7e
Add support for testing the new vectored exception handling
Jake-Shadle Jun 8, 2024
191ceaa
Oops
Jake-Shadle Jun 8, 2024
5186b36
Moar
Jake-Shadle Jun 8, 2024
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@Jake-Shadle
Jake-Shadle committed Jun 8, 2024
commit 191ceaaaca3f5a486f9afeebcc2e1537b274633f
8 changes: 4 additions & 4 deletions sadness-generator/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -99,6 +99,8 @@ impl SadnessFlavor {
Self::Purecall => raise_purecall(),
#[cfg(windows)]
Self::InvalidParameter => raise_invalid_parameter(),
#[cfg(windows)]
Self::HeapCorruption => raise_heap_corruption(),
#[cfg(target_os = "macos")]
Self::Guard => raise_guard_exception(),
}
Expand Down Expand Up @@ -413,14 +415,12 @@ pub unsafe fn raise_heap_corruption() -> ! {
if kernel32 != 0 {
let heap_free: Option<
unsafe extern "system" fn(HeapHandle, u32, *const core::ffi::c_void) -> Bool,
> = std::mem::transmute(GetProcAddress(kernel32, b"HeapFree\0".as_ptr()));
> = std::mem::transmute(get_proc_address(kernel32, b"HeapFree\0".as_ptr()));

let heap_free = heap_free.expect("failed to acquire HeapFree function");

let heap = GetProcessHeap();
let bad_pointer = 3 as *mut core::ffi::c_void;
heap_free(heap, 0, bad_pointer);
panic!("We should have crashed on the previous line");
heap_free(get_process_heap(), 0, bad_pointer);
} else {
panic!("Can't corrupt heap: failed to load kernel32");
}
Expand Down