On Fri, Feb 23, 2018 at 08:52:19AM -0700, Martin Sebor wrote:
> There are a large number of failures in these reports in many
> tests that were reported previously (before r257910), suggesting
> something else is wrong. They all seem to use -fpic.
>
> If you referring to some other report or your own result please
> post a link or say what target/configuration, etc..
The testcase clearly relies on inlining all the wrap_* functions,
but as they are void wrap_* with -fpic/-fPIC obviously they can't be
inlined at -O2, the executable or some other shared library might define
some other implementation of those and interpose it.
Some targets default to -fpic even.
The following patch just adds static inline to them, so that it works
even with -fpic, as tested with:
make check-gcc check-g++ RUNTESTFLAGS='--target_board=unix\{,-fpic,-fpie\}
dg.exp=Warray-bounds*'
Ok for trunk?
2018-02-23 Jakub Jelinek <ja...@redhat.com>
* c-c++-common/Warray-bounds-2.c (wrap_memcpy_src_xsize,
wrap_memcpy_src_diff_max, wrap_memcpy_dst_xsize,
wrap_memcpy_dst_diff_max, wrap_strcat_src_xsize,
wrap_strcat_dst_xsize, wrap_strcpy_src_xsize,
wrap_strcpy_dst_xsize, wrap_strncpy_src_xsize,
wrap_strncpy_src_diff_max, wrap_strncpy_dst_xsize,
wrap_strncpy_dst_diff_max, wrap_strncpy_dstarray_diff_neg): Add
static inline.
--- gcc/testsuite/c-c++-common/Warray-bounds-2.c.jj 2017-12-18
14:57:15.601127538 +0100
+++ gcc/testsuite/c-c++-common/Warray-bounds-2.c 2018-02-23
17:12:47.114113757 +0100
@@ -1,4 +1,4 @@
-/* Test to exercise that -Warray-bounds warnings for memory and sring
+/* Test to exercise that -Warray-bounds warnings for memory and string
functions are issued even when they are declared in system headers
(i.e., not just when they are explicitly declared in the source
file.)
@@ -24,7 +24,7 @@ struct __attribute__ ((packed)) Array
/* Exercise memcpy out-of-bounds offsets with an array of known size. */
-void wrap_memcpy_src_xsize (char *d, const char *s, ptrdiff_t i, size_t n)
+static inline void wrap_memcpy_src_xsize (char *d, const char *s, ptrdiff_t i,
size_t n)
{
memcpy (d, s + i, n); /* { dg-warning "offset 46 is out of the bounds
\\\[0, 45] of object .ar. with type .(struct )?Array." "memcpy" } */
}
@@ -39,7 +39,7 @@ void call_memcpy_src_xsize (char *d, siz
/* Exercise memcpy out-of-bounds offsets with an array of unknown size. */
-void wrap_memcpy_src_diff_max (char *d, const char *s, ptrdiff_t i, size_t n)
+static inline void wrap_memcpy_src_diff_max (char *d, const char *s, ptrdiff_t
i, size_t n)
{
memcpy (d, s + i, n); /* { dg-warning "pointer overflow between offset
\[0-9\]+ and size 3" "memcpy" } */
}
@@ -49,7 +49,7 @@ void call_memcpy_src_diff_max (char *d,
wrap_memcpy_src_diff_max (d, s, MAX, 3);
}
-void wrap_memcpy_dst_xsize (char *d, const char *s, ptrdiff_t i, size_t n)
+static inline void wrap_memcpy_dst_xsize (char *d, const char *s, ptrdiff_t i,
size_t n)
{
memcpy (d + i, s, n); /* { dg-warning "offset 47 is out of the bounds
\\\[0, 45] of object .ar1. with type .(struct )?Array." "memcpy" } */
}
@@ -62,7 +62,7 @@ void call_memcpy_dst_xsize (const char *
sink (&ar1);
}
-void wrap_memcpy_dst_diff_max (char *d, const char *s, ptrdiff_t i, size_t n)
+static inline void wrap_memcpy_dst_diff_max (char *d, const char *s, ptrdiff_t
i, size_t n)
{
memcpy (d + i, s, n); /* { dg-warning "offset -?\[0-9\]+ is out of the
bounds \\\[0, 45] of object .ar2. with type .(struct )?Array." "memcpy" } */
}
@@ -76,7 +76,7 @@ void call_memcpy_dst_diff_max (const cha
}
-void wrap_strcat_src_xsize (char *d, const char *s, ptrdiff_t i)
+static inline void wrap_strcat_src_xsize (char *d, const char *s, ptrdiff_t i)
{
strcat (d, s + i); /* { dg-warning "offset 46 is out of the bounds \\\[0,
45] of object .ar3. with type .(struct )?Array." "strcat" } */
}
@@ -89,7 +89,7 @@ void call_strcat_src_xsize (char *d)
sink (&ar3);
}
-void wrap_strcat_dst_xsize (char *d, const char *s, ptrdiff_t i)
+static inline void wrap_strcat_dst_xsize (char *d, const char *s, ptrdiff_t i)
{
strcat (d + i, s); /* { dg-warning "offset 47 is out of the bounds \\\[0,
45] of object .ar4. with type .(struct )?Array." "strcat" } */
}
@@ -103,7 +103,7 @@ void call_strcat_dst_xsize (const char *
}
-void wrap_strcpy_src_xsize (char *d, const char *s, ptrdiff_t i)
+static inline void wrap_strcpy_src_xsize (char *d, const char *s, ptrdiff_t i)
{
strcpy (d, s + i); /* { dg-warning "offset 48 is out of the bounds \\\[0,
45] of object .ar5. with type .(struct )?Array." "strcpy" } */
}
@@ -116,7 +116,7 @@ void call_strcpy_src_xsize (char *d)
sink (&ar5);
}
-void wrap_strcpy_dst_xsize (char *d, const char *s, ptrdiff_t i)
+static inline void wrap_strcpy_dst_xsize (char *d, const char *s, ptrdiff_t i)
{
strcpy (d + i, s); /* { dg-warning "offset 49 is out of the bounds \\\[0,
45] of object .ar6. with type .(struct )?Array." "strcpy" } */
}
@@ -132,7 +132,7 @@ void call_strcpy_dst_xsize (const char *
/* Exercise strncpy out-of-bounds offsets with an array of known size. */
-void wrap_strncpy_src_xsize (char *d, const char *s, ptrdiff_t i, size_t n)
+static inline void wrap_strncpy_src_xsize (char *d, const char *s, ptrdiff_t
i, size_t n)
{
strncpy (d, s + i, n); /* { dg-warning "offset 46 is out of the bounds
\\\[0, 45] of object .ar7. with type '(struct )?Array." "strncpy" } */
}
@@ -147,7 +147,7 @@ void call_strncpy_src_xsize (char *d, si
/* Exercise strncpy out-of-bounds offsets with an array of unknown size. */
-void wrap_strncpy_src_diff_max (char *d, const char *s, ptrdiff_t i, size_t n)
+static inline void wrap_strncpy_src_diff_max (char *d, const char *s,
ptrdiff_t i, size_t n)
{
/* Unlike in the similar call to memcpy(), there is no pointer
overflow here because the size N is not added to the source
@@ -160,7 +160,7 @@ void call_strncpy_src_diff_max (char *d,
wrap_strncpy_src_diff_max (d, s, MAX, 3);
}
-void wrap_strncpy_dst_xsize (char *d, const char *s, ptrdiff_t i, size_t n)
+static inline void wrap_strncpy_dst_xsize (char *d, const char *s, ptrdiff_t
i, size_t n)
{
strncpy (d + i, s, n); /* { dg-warning "offset 47 is out of the bounds
\\\[0, 45] of object .ar8. with type .(struct )?Array." "strncpy" } */
}
@@ -173,7 +173,7 @@ void call_strncpy_dst_xsize (const char
sink (&ar8);
}
-void wrap_strncpy_dst_diff_max (char *d, const char *s, ptrdiff_t i, size_t n)
+static inline void wrap_strncpy_dst_diff_max (char *d, const char *s,
ptrdiff_t i, size_t n)
{
strncpy (d + i, s, n); /* { dg-warning "offset -\[0-9\]+ is out of the
bounds \\\[0, 45] of object .ar9. with type .(struct )?Array." "strncpy" } */
}
@@ -186,8 +186,7 @@ void call_strncpy_dst_diff_max (const ch
sink (&ar9);
}
-void wrap_strncpy_dstarray_diff_neg (char *d, const char *s, ptrdiff_t i,
- size_t n)
+static inline void wrap_strncpy_dstarray_diff_neg (char *d, const char *s,
ptrdiff_t i, size_t n)
{
strncpy (d + i, s, n); /* { dg-warning "offset -\[0-9\]+ is out of the
bounds \\\[0, 90] of object .ar10. with type .(struct )?Array ?\\\[2]."
"strncpy" } */
}
Jakub
