On Wed, Jan 13, 2016 at 10:23:17PM +0530, Shriramana Sharma via Digitalmars-d-learn wrote: > Referring to: > https://auto-tester.puremagic.com/show-run.ghtml?projectid=1&runid=1915054&isPull=true, > the lines in question are > phobos/std/utf.d (66, 67): > > UnsignedStringBuf buf = void; > msg ~= " (at index " ~ unsignedToTempString(index, buf, 10) ~ ")"; > > rgrepping through the druntime and phobos sources for this symbol > UnsignedStringBuf I found: > > ./druntime/src/core/internal/string.d:16:alias UnsignedStringBuf = char[20]; > > So if it's a static array, then it has nothing to do with the GC, and > appending will not use the GC, right? So why is the compiler > complaining that I cannot use ~ inside a @nogc function? [...]
Even though unsignedToTempString() uses a static array, `msg` is a string, so appending to it using ~ or ~= may cause reallocation. That violates @nogc. T -- Computers shouldn't beep through the keyhole.
