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Hide internal printf functions [BZ #18822/21986]

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Hide internal printf functions to allow direct access within libc.so and
libc.a without using GOT nor PLT.

Since __guess_grouping has been changed to take 2 arguments by

commit a1d84548c8
Author: Ulrich Drepper <drepper@redhat.com>
Date:   Fri Feb 11 18:50:36 2000 +0000

the third argument passed to __guess_grouping is removed.

	[BZ #18822]
	[BZ #21986]
	* include/printf.h (__printf_fphex): Add attribute_hidden.
	(__guess_grouping): New prototype.
	* stdio-common/printf_fp.c (__guess_grouping): Removed.
	* stdio-common/reg-printf.c (__register_printf_specifier): Add
	libc_hidden_proto and libc_hidden_def.
	* stdlib/strfmon_l.c (__guess_grouping): Removed.
	(__vstrfmon_l): Remove the third argument passed to
	__guess_grouping.
This commit is contained in:
H.J. Lu
2017-08-22 07:47:34 -07:00
parent a16e8bc08e
commit 20962acbea
5 changed files with 21 additions and 11 deletions
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6
include/printf.h
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@ -8,7 +8,7 @@
/* Now define the internal interfaces. */
extern int __printf_fphex (FILE *, const struct printf_info *,
const void *const *);
const void *const *) attribute_hidden;
extern int __printf_fp (FILE *, const struct printf_info *,
const void *const *);
libc_hidden_proto (__printf_fp)
@ -16,5 +16,9 @@ extern int __printf_fp_l (FILE *, locale_t, const struct printf_info *,
const void *const *);
libc_hidden_proto (__printf_fp_l)
extern unsigned int __guess_grouping (unsigned int intdig_max,
const char *grouping)
attribute_hidden;
# endif /* !_ISOMAC */
#endif