Bug#1084905: leptonlib: FTBFS on sparc64 due to unaligned access

[John Paul Adrian Glaubitz]

Source: leptonlib
Version: 1.84.1-4
Severity: normal
Tags: upstream
User: debian-***@lists.debian.org
Usertags: sparc64
X-Debbugs-Cc: debian-***@lists.debian.org

Hi,

leptonlib currently fails to build from source on sparc64 due to unaligned access:

FAIL: ioformats_reg
===================


////////////////////////////////////////////////
//////////////// ioformats_reg ///////////////
////////////////////////////////////////////////
leptonica-1.84.2 : libgif 5.2.2 : libjpeg 6b (libjpeg-turbo 2.1.5) : libpng 1.6.44 : libtiff 4.5.1 : zlib 1.3.1 : libwebp 1.4.0 : libopenjp2 2.5.0
Test bmp 1 bpp file:
Bus error (core dumped)
FAIL ioformats_reg (exit status: 138)

with the following backtrace:

#0 0xfff800010064f9b0 in pixReadMemBmp (cdata=0x10000231160 "BMV\r", size=3414) at bmpio.c:181
181 ihbytes = convertOnBigEnd32(*(l_uint32 *)(bmpih));
(gdb) bt
#0 0xfff800010064f9b0 in pixReadMemBmp (cdata=0x10000231160 "BMV\r", size=3414) at bmpio.c:181
#1 0xfff80001006504dc in pixReadStreamBmp (fp=0x1000022c1d0) at bmpio.c:102
#2 0xfff80001007aa700 in pixReadStream (fp=0x1000022c1d0, hint=0) at readfile.c:329
#3 pixReadStream (fp=0x1000022c1d0, hint=0) at readfile.c:313
#4 0xfff80001007aa8b8 in pixRead (filename=0x10000231140 "./weasel2.4c.bmp") at readfile.c:200
#5 pixRead (filename=0x10000231140 "./weasel2.4c.bmp") at readfile.c:189
#6 0xfff80001007f538c in writeMultipageTiffSA (sa=0x10000204ac0, fileout=0x10000002aa8 "/tmp/lept/tiff/weasel_orig.tif") at tiffio.c:1579
#7 0xfff80001007f551c in writeMultipageTiff (dirin=0x10000002860 ".", substr=0x10000002ac8 "weasel2", fileout=0x10000002aa8 "/tmp/lept/tiff/weasel_orig.tif")
at tiffio.c:1536
#8 0x0000010000001f1c in main (argc=<optimized out>, argv=<optimized out>) at mtiff_reg.c:270

This has already been reported upstream [1].

Thanks,
Adrian

[1] https://github.com/DanBloomberg/leptonica/issues/750

--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer
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[Jeff Breidenbach]

Jonas, this alignment issue was reported on Sparc64. It was recently
addressed by upstream, but not yet brought into Debian. Mentioning in case
there is any interaction with the Rust bindings, which were also throwing
an error related to alignment.

https://github.com/DanBloomberg/leptonica/issues/750
https://ci.debian.net/packages/r/rust-leptonica-sys/testing/i386/52950971/#S7