35727048796

Committed 22 Sep 2026 12:24PM UTC coverage: 94.656% (+0.001%) from 94.655%

Build # 35727048796

Build Type

Pull #378

github

Committed by

rieske

Commit Message

fix: home the sret pointer before the function body

The hidden return pointer arrives in rdi and is not an IR value, so a
control-flow edge drops it without writing its home. The epilogue then
stores the struct through that slot. Straight-line returns kept rdi
live, so the existing sret tests passed. An untaken branch crashes at
-O0 and at -O1 when the callee is not inlined.

Write rdi into the sret slot in the prologue, before the body.

make(0) on a 24-byte struct prints 7 8 9.

Pull Request Pull Request #378: fix: home the sret pointer before the function body

Coverage Stats

17304 of 18281 relevant lines covered (94.66%)

147242.66 hits per line

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95.24

/home/runner/work/trans/trans/src/codegen/StackMachine.cpp

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rieske / trans / 35727048796

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