Bug#887523: giada FTBFS on several architectures: error: 'args' is used uninitialized in this function

[Adrian Bunk]

Source: giada
Version: 0.14.5~dfsg1-1
Severity: serious

https://buildd.debian.org/status/package.php?p=giada&suite=sid

...
src/utils/string.cpp: In function 'std::__cxx11::string gu_format(const char*, ...)':
src/utils/string.cpp:111:25: error: 'args' is used uninitialized in this function [-Werror=uninitialized]
  size_t size = vsnprintf(nullptr, 0, format, args);
                ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors
Makefile:3859: recipe for target 'src/utils/giada-string.o' failed
make[1]: *** [src/utils/giada-string.o] Error 1