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| author | Kaveh R. Ghazi <ghazi@caip.rutgers.edu> | 2001-12-21 02:36:37 +0000 |
|---|---|---|
| committer | Kaveh Ghazi <ghazi@gcc.gnu.org> | 2001-12-21 02:36:37 +0000 |
| commit | b4c984fbec1caaaa03c2c2bf2c9b42d3f7679223 (patch) | |
| tree | 840ebfbffcd09b2abfcb6059dc21b1f965cc1ab5 /gcc/doc | |
| parent | bfa8af3e37f63413295d14f15eae6dda770d4a02 (diff) | |
| download | gcc-b4c984fbec1caaaa03c2c2bf2c9b42d3f7679223.zip gcc-b4c984fbec1caaaa03c2c2bf2c9b42d3f7679223.tar.gz gcc-b4c984fbec1caaaa03c2c2bf2c9b42d3f7679223.tar.bz2 | |
builtin-attrs.def (__builtin_printf_unlocked, [...]): Mark with the __printf__ attribute.
* builtin-attrs.def (__builtin_printf_unlocked,
__builtin_fprintf_unlocked, printf_unlocked, fprintf_unlocked):
Mark with the __printf__ attribute.
* builtins.c (expand_builtin_fputs): Add an `unlocked' parameter
and set the replacement function depending on it.
(expand_builtin): Skip BUILT_IN_*_UNLOCKED when not optimizing.
Handle BUILT_IN_*_UNLOCKED when optimizing.
* builtins.def (DEF_EXT_FALLBACK_BUILTIN,
DEF_EXT_FRONT_END_LIB_BUILTIN): New macros.
Declare the "unlocked" stdio functions.
* c-common.c (c_expand_builtin_printf, c_expand_builtin_fprintf):
Add an `unlocked' parameter and set the replacement function
depending on it.
(c_expand_builtin): Handle BUILT_IN_PRINTF_UNLOCKED and
BUILT_IN_FPRINTF_UNLOCKED.
* doc/extend.texi (printf_unlocked, fprintf_unlocked,
fputs_unlocked): Document.
testsuite:
* gcc.dg/format/builtin-1.c: Test unlocked stdio.
* gcc.dg/format/c90-printf-3.c: Likewise.
* gcc.dg/format/c99-printf-3.c: Likewise.
* gcc.dg/format/ext-1.c: Likewise.
* gcc.dg/format/ext-6.c: Likewise.
* gcc.dg/format/format.h: Prototype unlocked stdio.
From-SVN: r48229
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/extend.texi | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index a9f659d..a224770 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -2047,7 +2047,8 @@ warnings are requested (using @option{-Wformat}), so there is no need to modify the header file @file{stdio.h}. In C99 mode, the functions @code{snprintf}, @code{vsnprintf}, @code{vscanf}, @code{vfscanf} and @code{vsscanf} are also checked. Except in strictly conforming C -standard modes, the X/Open function @code{strfmon} is also checked. +standard modes, the X/Open function @code{strfmon} is also checked as +are @code{printf_unlocked} and @code{fprintf_unlocked}. @xref{C Dialect Options,,Options Controlling C Dialect}. @item format_arg (@var{string-index}) @@ -4259,7 +4260,9 @@ v4si f (v4si a, v4si b, v4si c) @findex fabsl @findex ffs @findex fprintf +@findex fprintf_unlocked @findex fputs +@findex fputs_unlocked @findex imaxabs @findex index @findex labs @@ -4268,6 +4271,7 @@ v4si f (v4si a, v4si b, v4si c) @findex memcpy @findex memset @findex printf +@findex printf_unlocked @findex rindex @findex sin @findex sinf @@ -4315,8 +4319,9 @@ in. @code{_exit} is not recognized in strict ISO C mode (@option{-ansi}, strict C89 mode (@option{-ansi} or @option{-std=c89}). Outside strict ISO C mode, the functions @code{alloca}, @code{bcmp}, -@code{bzero}, @code{index}, @code{rindex} and @code{ffs} may be handled -as built-in functions. All these functions have corresponding versions +@code{bzero}, @code{index}, @code{rindex}, @code{ffs}, @code{fputs_unlocked}, +@code{printf_unlocked} and @code{fprintf_unlocked} may be handled as +built-in functions. All these functions have corresponding versions prefixed with @code{__builtin_}, which may be used even in strict C89 mode. |