On Tue, 2019-06-18 at 13:50 +0200, Mark Wielaard wrote: > Using ELF_C_WRITE_MMAP sometimes causes unexpected errors when disk > space is low. When writing out the file, the output file is first > extended so that it covers the whole file/mmap size. But it might > be that the file system allowed the extension as a sparse file. In > that case writing to the file through the mmap might still fail and > produce a SIGBUS if the disk is full. This is confusing to the user. > > Using ELF_C_WRITE will produce "normal" errors when the file cannot > be written out. It also seems to use less memory because the debug > file is created from scratch. So the memory is first read into the > ELF data structure buffers, then written out as a whole. In this case > the mmap output buffer is just overhead.
I pushed this to master.
