Bug#818827: webkit2gtk: FTBFS with libc 2.23: 'isnan' was not declared in this scope

[Martin Michlmayr]

Package: webkit2gtk
Version: 2.10.8-1
Severity: important
User: debian-glibc at lists.debian.org
Usertags: 2.23

This package fails to build with libc6 2.23 (2.23-0experimental0 from
experimental).

> sbuild (Debian sbuild) 0.68.0 (15 Jan 2016) on dl580gen9-02.hlinux
...
> Source/JavaScriptCore/heap -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/debugger -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/inspector -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/inspector/agents -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/inspector/augmentable -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/inspector/remote -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/interpreter -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/jit -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/llint -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/llvm -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/parser -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/profiler -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/replay -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/runtime -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/tools -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/wasm -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/yarr -I/<<PKGBUILDDIR>>/Source/WTF -I/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/DerivedSources -I/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/DerivedSources/ForwardingHeaders -I/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/DerivedSources/JavaScriptCore -I/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/DerivedSources/JavaScriptCore/inspector -I/<<PKGBUILDDIR>>/Source -I/<<PKGBUILDDIR>>/Source/JavaScriptCore/disassembler/udis86 -isystem /usr/include/x86_64-linux-gnu -isystem /usr/include/glib-2.0 -isystem /usr/lib/x86_64-linux-gnu/glib-2.0/include  -g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -DNDEBUG -DG_DISABLE_CAST_CHECKS  -std=c++11  -fno-exceptions -fno-strict-aliasing -fno-rtti -fPIC   -Wall -Wextra -Wcast-align -Wformat-security -Wmissing-format-attribute -Wpointer-arith -Wundef -Wwrite-strings  -o CMakeFiles/JavaScriptCore.dir/runtime/ReflectObject.cpp.o -c /<<PKGBUILDDIR>>/Source/JavaScriptCore/runtime/ReflectObject.cpp
> /<<PKGBUILDDIR>>/Source/JavaScriptCore/runtime/Options.cpp: In member function 'bool JSC::Option::operator==(const JSC::Option&) const':
> /<<PKGBUILDDIR>>/Source/JavaScriptCore/runtime/Options.cpp:613:90: error: 'isnan' was not declared in this scope
>          return (m_entry.doubleVal == other.m_entry.doubleVal) || (isnan(m_entry.doubleVal) && isnan(other.m_entry.doubleVal));
>                                                                                           ^

-- 
Martin Michlmayr
Linux for HPE Helion, Hewlett Packard Enterprise