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authorRoland McGrath <roland@gnu.org>2004-08-10 18:01:40 +0000
committerRoland McGrath <roland@gnu.org>2004-08-10 18:01:40 +0000
commitf98ca075dbc8b8598dcc1d953b930cd87ced023a (patch)
treed5d36261ebe9493d6197d4523ac566b4c7fb2103 /libio
parent65903cc585ad7157fe03b527608b0f442b029fa5 (diff)
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[BZ #316]
2004-08-10 Jakub Jelinek <jakub@redhat.com> * libio/bits/stdio.h (fread_unlocked): Cast 0 to (size_t). (fwrite_unlocked): When checking if size * n is <= 8, cast each argument to size_t individually. Cast n to (void) instead of (size_t), surround with (), return (size_t) 0 if one of n or size is 0. [BZ #316] * stdio-common/Makefile (tests): Add tst-unlockedio. * stdio-common/tst-unlockedio.c: New test.
Diffstat (limited to 'libio')
-rw-r--r--libio/bits/stdio.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/libio/bits/stdio.h b/libio/bits/stdio.h
index e602dbd826..60c937f072 100644
--- a/libio/bits/stdio.h
+++ b/libio/bits/stdio.h
@@ -148,12 +148,13 @@ ferror_unlocked (FILE *__stream) __THROW
|| (__builtin_constant_p (n) && (size_t) (n) == 0)) \
/* Evaluate all parameters once. */ \
? ((void) (ptr), (void) (stream), (void) (size), \
- (void) (n), 0) \
+ (void) (n), (size_t) 0) \
: fread_unlocked (ptr, size, n, stream))))
# define fwrite_unlocked(ptr, size, n, stream) \
(__extension__ ((__builtin_constant_p (size) && __builtin_constant_p (n) \
- && (size_t) ((size) * (n)) <= 8 && (size_t) (size) != 0) \
+ && (size_t) (size) * (size_t) (n) <= 8 \
+ && (size_t) (size) != 0) \
? ({ const char *__ptr = (const char *) (ptr); \
FILE *__stream = (stream); \
size_t __cnt; \
@@ -167,7 +168,7 @@ ferror_unlocked (FILE *__stream) __THROW
|| (__builtin_constant_p (n) && (size_t) (n) == 0)) \
/* Evaluate all parameters once. */ \
? ((void) (ptr), (void) (stream), (void) (size), \
- (size_t) n) \
+ (void) (n), (size_t) 0) \
: fwrite_unlocked (ptr, size, n, stream))))
#endif