g++ with -fprofile-dir flag has a bug (backslash instead of forward-slash issue)
Sun Apr 12 11:39:41 GMT 2020
I would file a bug, but that link you provided takes me to a sign-up page
that says, "Account creation restricted. Please contact ... response
within 24 hours..."
A quick cursory glace of GCC sources would suggest the issue is in
\gcc\coverage.c. This is a snippit of a function that builds the mangled
path for the .gcda file.
const char *separator = "\\";
const char *separator = "/";
filename = concat (getpwd (), separator, filename, NULL);
filename = mangle_path (filename);
len = strlen (filename);
I'm not an expert on building gcc. I just suspect that somewhere in the
build chain HAVE_DOS_BASED_FILE_SYSTEM is getting defined for or by cygwin.
Another cursory search of gcc sources suggest HAVE_DOS_BASED_FILE_SYSTEM is
defined by this preprocessor stuff:
#if defined(__MSDOS__) || defined(_WIN32) || defined(__OS2__) || defined
# ifndef HAVE_DOS_BASED_FILE_SYSTEM
# define HAVE_DOS_BASED_FILE_SYSTEM 1
Still a gcc bug? I'm guessing so.
On Sun, Apr 12, 2020 at 4:26 AM JonY via Cygwin <email@example.com> wrote:
> On 4/12/20 10:59 AM, John Selbie via Cygwin wrote:
> > Sure, but this bug is unique to cygwin. Why would that be there bug?
> Because Cygwin does not modify gcc to use Windows paths.
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