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Subject: Re: ../src/x86/ffi64.c:552:5: runtime error: store to misaligned address
To: noloader@gmail.com, libffi-discuss@sourceware.org
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From: Matthias Klose <doko@ubuntu.com>
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On 18.09.19 16:01, Jeffrey Walton wrote:
> Hi Everyone,
> 
> I'm testing OpenSC 0.19.0 using a sanitizer build. The sanitizer is
> UBsan, and it is enabled with -fsanitize=undefined in CFLAGS and
> CXXFLAGS.
> 
> OpenSC depends upon p11-kit, and p11-kit depends upon libffi. During
> testing of p11-kit, libffi is producing a finding when I 'make check':
> 
> ../src/x86/ffi64.c:552:5: runtime error: store to misaligned address
> 0x7ff660b53012 for type 'long long unsigned int', which requires 8
> byte alignment
> 0x7ff660b53012: note: pointer points here
>   00 00  49 bb 00 00 00 00 00 00  00 00 00 00 00 00 00 00  00 00 00 00
> 00 00 00 00  00 00 00 00 00 00
>                ^
> ERROR: test-managed - missing test plan
> 
> I believe the finding is produced by libffi-3.2.1. I can only say "I
> believe" because I am having trouble tracking down
> "../src/x86/ffi64.c". 'make check' is running from the p11-kit
> directory, and ../src/x86/ffi64.c does not exist.

you could verify that by getting the source shipped in the distribution

   apt source libffi

and point "make check" to the source.