diff options
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | NEWS | 7 | ||||
| -rw-r--r-- | libio/bits/stdio.h | 4 | ||||
| -rw-r--r-- | libio/stdio.h | 8 |
4 files changed, 12 insertions, 11 deletions
@@ -1,5 +1,9 @@ 2018-02-06 Zack Weinberg <zackw@panix.com> + * libio/stdio.h: Don't define getc or putc as macros. + * libio/bits/stdio.h (getchar, putchar): Use getc and putc, + not _IO_getc and _IO_putc. + * stdio-common/tstgetln.c: Don't redefine FILE, va_list, or BUFSIZ. * stdio-common/tstgetln.c: Don't redefine ssize_t. @@ -13,7 +13,12 @@ Major new features: Deprecated and removed features, and other changes affecting compatibility: - [Add deprecations, removals and changes affecting compatibility here] + * The stdio.h functions 'getc' and 'putc' are no longer defined as macros. + This was never required by the C standard, and the macros just expanded + to call alternative names for the same functions. If you hoped getc and + putc would provide performance improvements over fgetc and fputc, instead + investigate using (f)getc_unlocked and (f)putc_unlocked, and, if + necessary, flockfile and funlockfile. Changes to build and runtime requirements: diff --git a/libio/bits/stdio.h b/libio/bits/stdio.h index d287083de1..eb42b22153 100644 --- a/libio/bits/stdio.h +++ b/libio/bits/stdio.h @@ -43,7 +43,7 @@ vprintf (const char *__restrict __fmt, _G_va_list __arg) __STDIO_INLINE int getchar (void) { - return _IO_getc (stdin); + return getc (stdin); } @@ -78,7 +78,7 @@ getchar_unlocked (void) __STDIO_INLINE int putchar (int __c) { - return _IO_putc (__c, stdout); + return putc (__c, stdout); } diff --git a/libio/stdio.h b/libio/stdio.h index 95bc902a82..33de3813bb 100644 --- a/libio/stdio.h +++ b/libio/stdio.h @@ -483,10 +483,6 @@ extern int getc (FILE *__stream); marked with __THROW. */ extern int getchar (void); -/* The C standard explicitly says this is a macro, so we always do the - optimization for it. */ -#define getc(_fp) _IO_getc (_fp) - #ifdef __USE_POSIX199506 /* These are defined in POSIX.1:1996. @@ -523,10 +519,6 @@ extern int putc (int __c, FILE *__stream); marked with __THROW. */ extern int putchar (int __c); -/* The C standard explicitly says this can be a macro, - so we always do the optimization for it. */ -#define putc(_ch, _fp) _IO_putc (_ch, _fp) - #ifdef __USE_MISC /* Faster version when locking is not necessary. |