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Bug#804536: gcc-5: [mips,mipsel] regression in optimization causes FTBFS for gsoap



Package: gcc-5
Version: 5.2.1-23
Severity: serious
Justification: causes gsoap to FTBFS
Control: affects -1 gsoap
Control: block 804455 by -1
X-Debbugs-Cc: debian-mips@lists.debian.org

Hi!

The binnmu of gsoap 2.8.22-1 due to the openssl transition failed on
mips and mipsel, but succeeded on the other architectures.

https://buildd.debian.org/status/package.php?p=gsoap

(It also succeeded on mip64le - but the mips64el build used gcc-5
5.2.1-21 while mips and mipsel used 5.2.1-23. I am not sure if this is
relevant information.)

The failure is a segmentation fault when running the soapcpp2 binary
that has been compiled as part of the build. The soapcpp2 binary is not
linked to openssl, so the issue is not due to the new openssl library
that triggered the binnmu rebuild.

I can reproduce the failure on the eder.debian.org porterbox.

However, if I on the porterbox reduce the optimization from -O2 to -O1,
the build succeeds. This therefore looks like a regression in
mips/mipsel optimization.

Mattias Ellert

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