On Wed, 22 Oct 2025 10:01:50 GMT, Andrew Haley <[email protected]> wrote:

> SafeFetch was designed specifically for problems like this one.

It was. However, I do not believe we should be in a situation where we are 
checking a call branch that is the last instruction in a code buffer -- which 
means there is no need to incur the cost of a SafeFetch. In particular, the 
failure that happened here only arose because a `far_jump` was used instead of 
a `far_call`. If a `far_call` had been generated then the value in lr would 
have been the last word in the buffer rather than a word off the end.

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PR Comment: https://git.openjdk.org/jdk/pull/26678#issuecomment-3432012676

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