provenacne blog post: clarification

[web.git] / personal / _posts / 2020-12-14-provenance.md

diff --git a/personal/_posts/2020-12-14-provenance.md b/personal/_posts/2020-12-14-provenance.md
index 94040c417cecb1e86a83942f6530cd8fb0b22a2c..78e2538c65c26084a9f5c6f5cb4890a4df849d6d 100644 (file)
--- a/personal/_posts/2020-12-14-provenance.md
+++ b/personal/_posts/2020-12-14-provenance.md
@@ -123,7 +123,8 @@ This program has two possible behaviors: either `ip` (the address one-past-the-e
 Or the two are equal, in which case the program will print "10" (`iq` is the result of casting `q` to an integer, so casting it back will yield the original pointer, or at least a pointer pointing to the same object / location in memory).
 
 The first "optimization" we will perform is to exploit that if we enter the `if` body, we have `iq == ip`, so we can replace all `iq` by `ip`.
-Subsequently the definition of `ip` is inlined:
+The assignment thus becomes `*(char*)ip = 10`.
+Subsequently, the definition of `ip` is inlined:
 {% highlight c %}
 char p[1], q[1] = {0};
 uintptr_t ip = (uintptr_t)(p+1);