Bug#1038252: librsvg: FTBFS on i386: transform::tests::parses_transform_list, transform::tests::parses_valid_transform failed

[Simon McVittie]

Control: found -1 2.54.5+dfsg-1
Control: forwarded -1 https://gitlab.gnome.org/GNOME/librsvg/-/issues/871

On Fri, 16 Jun 2023 at 21:11:21 +0100, Simon McVittie wrote:
> On Fri, 16 Jun 2023 at 21:00:13 +0200, Sebastian Ramacher wrote:
> > https://buildd.debian.org/status/fetch.php?pkg=librsvg&arch=i386&ver=2.54.5%2Bdfsg-2&stamp=1686829500&raw=0
> > 
> > ---- transform::tests::parses_transform_list stdout ----
> > thread 'transform::tests::parses_transform_list' panicked at 'assertion failed: t1.y0.approx_eq(t2.y0, (epsilon, 1))', src/transform.rs:716:9
> > 
> > ---- transform::tests::parses_valid_transform stdout ----
> > thread 'transform::tests::parses_valid_transform' panicked at 'assertion failed: t1.y0.approx_eq(t2.y0, (epsilon, 1))', src/transform.rs:716:9
> 
> This might be i387 excess precision resulting in rounding errors on i386
> that differ from what happens on other architectures, or it might be
> something unrelated.

Rebuilding 2.54.5+dfsg-1 in bookworm has similar behaviour, which means
this is a behaviour change in build-dependency packages, rather than a
result of a change in librsvg. One possible trigger is the upgrade of rustc
1.61 to 1.63.

    smcv