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authorAdhemerval Zanella <azanella@linux.vnet.ibm.com>2015-01-06 07:59:04 -0500
committerAdhemerval Zanella <azanella@linux.vnet.ibm.com>2015-01-08 08:03:31 -0500
commitdd6e8af6ba1b8a95a7f1dc7422e5ea4ccc7fbd93 (patch)
tree10046fc1091a66245c81fe62ef62ef52b11413ca /sysdeps/unix/sysv/linux/utimes.c
parent28c38448de826314c1d89b18a26042fee21d7c9c (diff)
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powerpc: Fix compiler warning on some syscalls
GCC 5.0 emits an warning when using sizeof on array function parameters
and powerpc internal syscall macros add a check for such cases.  More
specifically, on powerpc64 and powerpc32 sysdep.h:

  if (__builtin_classify_type (__arg3) != 5 && sizeof (__arg3) > 8) \
          __illegally_sized_syscall_arg3 (); \

And for sysdeps/unix/sysv/linux/utimensat.c build GCC emits:

error: ‘sizeof’ on array function parameter ‘tsp’ will return size of
‘const struct timespec *’

This patch uses the address of first struct member instead of the struct
itself in syscall macro.
Diffstat (limited to 'sysdeps/unix/sysv/linux/utimes.c')
-rw-r--r--sysdeps/unix/sysv/linux/utimes.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/utimes.c b/sysdeps/unix/sysv/linux/utimes.c
index 5423ff200f..2a1f2f90a1 100644
--- a/sysdeps/unix/sysv/linux/utimes.c
+++ b/sysdeps/unix/sysv/linux/utimes.c
@@ -29,7 +29,8 @@
 int
 __utimes (const char *file, const struct timeval tvp[2])
 {
-  return INLINE_SYSCALL (utimes, 2, file, tvp);
+  /* Avoid implicit array coercion in syscall macros.  */
+  return INLINE_SYSCALL (utimes, 2, file, &tvp[0]);
 }
 
 weak_alias (__utimes, utimes)