On Fri, Apr 29, 2011 at 06:20:17PM +0300, Janne Blomqvist wrote: > > since about a decade or so ago, POSIX specifies that PATH_MAX includes > the trailing null byte (previously it was undefined). However, > libgfortran has incorrectly assumed the opposite, and has thus created > temporary buffers of length PATH_MAX + 1 for holding paths when > converting from Fortran to C style strings. Secondly, these buffers > are allocated on the stack, and on Linux PATH_MAX is 4096 (presumably > other targets use something similar), which is quite a large object to > put on the stack. This can however be easily avoided in the common > case by using VLA's or alloca() as most paths are quite short, and we > know the size of the Fortran string to convert. > > The attached patch fixes the problems discussed above. Regtested on > x86_64-unknown-linux-gnu, Ok for trunk? >
OK. -- Steve
