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-rw-r--r--doc/langref.html.in3
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/langref.html.in b/doc/langref.html.in
index 34fc7681c7..5da2697187 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -999,7 +999,8 @@ pub fn main() void {
</p>
<p>
In {#link|Debug#} mode, Zig writes {#syntax#}0xaa{#endsyntax#} bytes to undefined memory. This is to catch
- bugs early, and to help detect use of undefined memory in a debugger.
+ bugs early, and to help detect use of undefined memory in a debugger. However, this behavior is only an
+ implementation feature, not a language semantic, so it is not guaranteed to be observable to code.
</p>
{#header_close#}
{#header_close#}