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Alt matching on float literals is broken #1046

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marijnh opened this issue Oct 18, 2011 · 0 comments
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Alt matching on float literals is broken #1046

marijnh opened this issue Oct 18, 2011 · 0 comments

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@marijnh
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marijnh commented Oct 18, 2011

The compiler tries to use floats as the cases in an LLVM switch, which does not work.
celinval pushed a commit to celinval/rust-dev that referenced this issue Jun 4, 2024
@tedinski @tautschnig @danielsn
Rewrite loops with multiple back edges to having a single back edge o…
6acc2cf 
…nly (rust-lang#1117)

rustc reasonably translates if statements at end of a loop body to
backwards jumps to the loop head. This, however, causes CBMC's symbolic
execution to spuriously treat these as nested loops. This commit now
enables a rewrite step that had previously been built for exactly such
cases.

This treatment as nested loops implied that seemingly lower unwinding
bounds were sufficient (as the loop unwinding counter got reset). Three
of the tests exhibited this behaviour, which now makes larger unwinding
bounds necessary.

Fixes: rust-lang#1046

Co-authored-by: Daniel Schwartz-Narbonne <dsn@amazon.com>

Co-authored-by: Michael Tautschnig <tautschn@amazon.com>
Co-authored-by: Daniel Schwartz-Narbonne <dsn@amazon.com>
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