[PATCH][committed] testsuite: Skip cases for default_packed targets

[PATCH][committed] testsuite: Skip cases for default_packed targets

[Dimitar Dimitrov]

The memchr test cases expect padding to be present in structures.  But
this is not true for targets which pack by default.  Skip these test
cases in order to avoid static assert errors when checking field offsets.

The following asserts are triggered due to assumptions for structure
field alignment:
memcmp-3.c: _Static_assert (sizeof (struct S8_16_32) == 8);
memchr.c: _Static_assert (__builtin_offsetof (struct SX, a) == 6);
  

Committed as obvious.

gcc/testsuite/ChangeLog:

	* gcc.dg/memchr.c: Skip for default_packed targets.
	* gcc.dg/memcmp-3.c: Ditto.

Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
---
 gcc/testsuite/gcc.dg/memchr.c   | 3 ++-
 gcc/testsuite/gcc.dg/memcmp-3.c | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/gcc.dg/memchr.c b/gcc/testsuite/gcc.dg/memchr.c
index fb21d58b476..27524b82520 100644
--- a/gcc/testsuite/gcc.dg/memchr.c
+++ b/gcc/testsuite/gcc.dg/memchr.c
@@ -1,6 +1,7 @@
 /* PR middle-end/78257 - missing memcmp optimization with constant arrays
    { dg-do compile }
-   { dg-options "-O -Wall -fdump-tree-optimized" } */
+   { dg-options "-O -Wall -fdump-tree-optimized" }
+   { dg-skip-if "test assumes structs are not packed" { default_packed } } */
 
 typedef __INT8_TYPE__  int8_t;
 typedef __INT16_TYPE__ int16_t;
diff --git a/gcc/testsuite/gcc.dg/memcmp-3.c b/gcc/testsuite/gcc.dg/memcmp-3.c
index b5b8ac1209f..8ddde996c2f 100644
--- a/gcc/testsuite/gcc.dg/memcmp-3.c
+++ b/gcc/testsuite/gcc.dg/memcmp-3.c
@@ -1,7 +1,8 @@
 /* PR middle-end/78257 - missing memcmp optimization with constant arrays
    { dg-do compile }
    { dg-options "-O -Wall -fdump-tree-optimized" }
-   { dg-skip-if "missing data representation" { "pdp11-*-*" } } */
+   { dg-skip-if "missing data representation" { "pdp11-*-*" } }
+   { dg-skip-if "test assumes structs are not packed" { default_packed } } */
 
 #define offsetof(T, m) __builtin_offsetof (T, m)
 
-- 
2.35.1