Hi Guys,
PR 68913 notes that the test gcc.dg/lto/pr61886_0.c test fails on
targets whose C library does not provide a __fread_chk function.
Since the purpose of the test is to show that GCC will correctly
discard the invocation of __fread_chk_warn, we do not need to actually
link against a real __fread_chk function. A dummy will do.
Hence I would like to apply the patch below. This patch resolves
unexpected failures of the pr61886_0.c test on targets like spu-elf
and sparc64-elf.
Cheers
Nick
gcc/testsuite/ChangeLog
2015-12-18 Nick Clifton <ni...@redhat.com>
PR 68913
* gcc.dg/lto/pr61886_0.c (__fread_chk): Provide a weak definition
of this function.
Index: gcc/testsuite/gcc.dg/lto/pr61886_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/pr61886_0.c (revision 231805)
+++ gcc/testsuite/gcc.dg/lto/pr61886_0.c (working copy)
@@ -4,7 +4,21 @@
typedef __SIZE_TYPE__ size_t;
typedef struct _IO_FILE FILE;
-extern size_t __fread_chk (void *__restrict __ptr, size_t __ptrlen, size_t
__size, size_t __n, FILE *__restrict __stream) __asm__ ("" "__fread_chk")
__attribute__ ((__warn_unused_result__));
+/* PR 68913: Not all targets have __fread_chk available,
+ so we provide our own version for this function here. */
+
+size_t __fread_chk (void *__restrict, size_t, size_t, size_t, FILE
*__restrict) __attribute__ ((__warn_unused_result__,weak));
+size_t
+__fread_chk (void *__restrict __ptr __attribute__((unused)),
+ size_t __ptrlen __attribute__((unused)),
+ size_t __size __attribute__((unused)),
+ size_t __n __attribute__((unused)),
+ FILE *__restrict __stream __attribute__((unused)))
+{
+ return 0;
+}
+
+
extern size_t __fread_chk_warn (void *__restrict __ptr, size_t __ptrlen,
size_t __size, size_t __n, FILE *__restrict __stream) __asm__ (""
"__fread_chk") __attribute__ ((__warn_unused_result__))
__attribute__((__warning__ ("fread called with bigger size * nmemb than length
" "of destination buffer")));
extern __inline __attribute__ ((__always_inline__)) __attribute__
((__gnu_inline__)) __attribute__ ((__artificial__)) __attribute__
((__warn_unused_result__))
