issue-link js-issue-link" data-error-text="Failed to load title" data-id="228801" data-permission-text="Title is private" data-url="https://github.com/rust-lang/rust/issues/24" data-hovercard-type="issue" data-hovercard-url="/rust-lang/rust/issues/24/hovercard" href="https://github.com/rust-lang/rust/issues/24">rust-lang#24 [...] 6f54: e280b005 add fp, r0, rust-lang#5 [...] 7018: e5cd001c strb r0, [sp, rust-lang#28] 701c: e1a0082a lsr r0, sl, rust-lang#16 7020: 03a01001 moveq r1, rust-lang#1 7024: e5cb0002 strb r0, [fp, rust-lang#2] 7028: e1cba0b0 strh sl, [fp] ``` Note that `fp` points to `sp + 29`, so the three `str*`-instructions should fill up a 32bit - value at `sp + 28`, which is later used as the value `n` in `Ok(n) => written += n`. This doesn't work on ARMv5 as the `strh` can't write to the unaligned contents of `fp`, so the upper bits of `n` won't get cleared, leading to the assertion failure in Vec::drain. With `+strict-align`, the code works as expected.

ARMv5 needs +strict-align#42314bors merged 1 commit intorust-lang:masterrust-lang/rust:masterfrom jannic:patch-1jannic/rust:patch-1Copy head branch name to clipboard

Commits

Commits on May 30, 2017

ARMv5 needs +strict-align

ARMv5 needs +strict-align#42314
bors merged 1 commit intorust-lang:masterfrom
jannic:patch-1