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bfd_set_input_error

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A downside to the 2017-10-04 PR22245 fix is that bfd_set_error can now
silently accept invalid errors if/when someone passes the a value of
the wrong enumeration type, which previously would be caught by the
-Wenum-conversion warning.

	PR 22245
	* bfd.c (bfd_set_error): Revert 2017-10-04 change.  Remove
	ellipsis parameter.  Split out bfd_error_on_input code to..
	(bfd_set_input_error): .. New function.
	* archive.c (_bfd_write_archive_contents): Use bfd_set_input_error.
	* vms-lib.c (_bfd_vms_lib_write_archive_contents): Likewise.
	* bfd-in2.h: Regenerate.
This commit is contained in:
Pedro Alves 2017-10-04 14:20:51 +01:00 committed by Alan Modra
parent 7d36e27991
commit 2ca7de3746
5 changed files with 47 additions and 20 deletions
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10
bfd/ChangeLog
View File

@ -1,3 +1,13 @@
2017-10-05 Pedro Alves <palves@redhat.com>
PR 22245
* bfd.c (bfd_set_error): Revert 2017-10-04 change. Remove
ellipsis parameter. Split out bfd_error_on_input code to..
(bfd_set_input_error): .. New function.
* archive.c (_bfd_write_archive_contents): Use bfd_set_input_error.
* vms-lib.c (_bfd_vms_lib_write_archive_contents): Likewise.
* bfd-in2.h: Regenerate.
2017-10-05 Alan Modra <amodra@gmail.com>
* elflink.c (elf_link_input_bfd): Correct ctor/dtor in init_array/

2
bfd/archive.c
View File

@ -2309,7 +2309,7 @@ _bfd_write_archive_contents (bfd *arch)
return TRUE;
input_err:
bfd_set_error (bfd_error_on_input, current, bfd_get_error ());
bfd_set_input_error (current, bfd_get_error ());
return FALSE;
}

4
bfd/bfd-in2.h
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@ -7054,7 +7054,9 @@ bfd_error_type;
bfd_error_type bfd_get_error (void);
void bfd_set_error (int error_tag, ...);
void bfd_set_error (bfd_error_type error_tag);
void bfd_set_input_error (bfd *input, bfd_error_type error_tag);
const char *bfd_errmsg (bfd_error_type error_tag);

49
bfd/bfd.c
View File

@ -497,32 +497,47 @@ FUNCTION
bfd_set_error
SYNOPSIS
void bfd_set_error (int error_tag, ...);
void bfd_set_error (bfd_error_type error_tag);
DESCRIPTION
Set the BFD error condition to be @var{error_tag}.
If @var{error_tag} is bfd_error_on_input, then this function
takes two more parameters, the input bfd where the error
occurred, and the bfd_error_type error.
@var{error_tag} must not be bfd_error_on_input. Use
bfd_set_input_error for input errors instead.
*/
void
bfd_set_error (int error_tag, ...)
bfd_set_error (bfd_error_type error_tag)
{
bfd_error = error_tag;
if (error_tag == bfd_error_on_input)
{
/* This is an error that occurred during bfd_close when
writing an archive, but on one of the input files. */
va_list ap;
if (bfd_error >= bfd_error_on_input)
abort ();
}
va_start (ap, error_tag);
input_bfd = va_arg (ap, bfd *);
input_error = (bfd_error_type) va_arg (ap, int);
if (input_error >= bfd_error_on_input)
abort ();
va_end (ap);
}
/*
FUNCTION
bfd_set_input_error
SYNOPSIS
void bfd_set_input_error (bfd *input, bfd_error_type error_tag);
DESCRIPTION
Set the BFD error condition to be bfd_error_on_input.
@var{input} is the input bfd where the error occurred, and
@var{error_tag} the bfd_error_type error.
*/
void
bfd_set_input_error (bfd *input, bfd_error_type error_tag)
{
/* This is an error that occurred during bfd_close when writing an
archive, but on one of the input files. */
bfd_error = bfd_error_on_input;
input_bfd = input;
input_error = error_tag;
if (input_error >= bfd_error_on_input)
abort ();
}
/*

2
bfd/vms-lib.c
View File

@ -2305,7 +2305,7 @@ _bfd_vms_lib_write_archive_contents (bfd *arch)
return TRUE;
input_err:
bfd_set_error (bfd_error_on_input, current, bfd_get_error ());
bfd_set_input_error (current, bfd_get_error ());
return FALSE;
}