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cppfiles.c (open_file): If already read, then don't reopen.

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* cppfiles.c (open_file): If already read, then don't reopen.
	Immediately close an empty file.

From-SVN: r37227
This commit is contained in:
Nathan Sidwell 2000-11-03 16:03:37 +00:00 committed by Nathan Sidwell
parent 30235724a2
commit def3263a33
2 changed files with 17 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2000-11-03 Nathan Sidwell <nathan@codesourcery.com>
* cppfiles.c (open_file): If already read, then don't reopen.
Immediately close an empty file.
2000-11-01 Bernd Schmidt <bernds@redhat.co.uk>
* expr.h (fold_builtin): Move declaration...

16
gcc/cppfiles.c
View File

@ -145,9 +145,13 @@ open_file (pfile, filename)
if (file->fd == -2)
return 0;
/* -1 indicates a file we've opened previously, and since closed. */
if (file->fd != -1)
return file;
/* Don't reopen an idempotent file. */
if (DO_NOT_REREAD (file))
return file;
/* Don't reopen one which is already loaded. */
if (file->buffer != NULL)
return file;
}
else
{
@ -181,7 +185,11 @@ open_file (pfile, filename)
{
/* Mark a regular, zero-length file never-reread now. */
if (S_ISREG (file->st.st_mode) && file->st.st_size == 0)
file->cmacro = NEVER_REREAD;
{
file->cmacro = NEVER_REREAD;
close (file->fd);
file->fd = -1;
}
return file;
}