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This introduces a new method, expression::evaluate, and changes the top-level expression-evaluation functions to use it. Stack temporary handling is moved into this new method, which makes sense because that handling was only done when "*pos == 0". This patch avoids some temporary regressions related to stack temporary in the larger expression rewrite series. I've pulled it out separately because it seems like a reasonable change in its own right, and because it's better to avoid making that series even longer. Regression tested on x86-64 Fedora 32. gdb/ChangeLog 2021-02-18 Tom Tromey <tom@tromey.com> * expression.h (struct expression) <evaluate>: Declare method. * eval.c (evaluate_subexp): Simplify. (expression::evaluate): New method. (evaluate_expression, evaluate_type): Use expression::evaluate.
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