diff options
Diffstat (limited to 'gdb/testsuite/gdb.cp/align.exp')
| -rw-r--r-- | gdb/testsuite/gdb.cp/align.exp | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/gdb/testsuite/gdb.cp/align.exp b/gdb/testsuite/gdb.cp/align.exp index 6cda04798e8..018a297cde9 100644 --- a/gdb/testsuite/gdb.cp/align.exp +++ b/gdb/testsuite/gdb.cp/align.exp @@ -80,8 +80,19 @@ puts $outfile { unsigned a_int3 = alignof (int[3]); -#if !defined (__clang__) - unsigned a_void = alignof (void); +#if defined __GNUC__ && !defined __clang__ + /* As a GNU C extension, GCC allows void pointer arithmetic, with + sizeof (void) == 1. + Another GNU C extension is __alignof__, which can be used to get + __alignof__ (void), which is also 1. This is unavailabe on clang. + GCC used to only warn for alignof (void), but starting with GCC 12.1, + as well as GCC 11.3, it will generate an error (note that using + -std=gnu++11 does not prevent the error). + So we avoid using alignof, and use __alignof__ instead. */ + unsigned a_void = __alignof__ (void); +#else + /* No support for __alignof__ (void), hardcode value. */ + unsigned a_void = 1; #endif struct base { char c; }; @@ -173,13 +184,5 @@ foreach type $typelist { set expected [get_integer_valueof a_int3 0] gdb_test "print alignof(int\[3\])" " = $expected" -# As an extension, GCC allows void pointer arithmetic, with -# sizeof(void) and alignof(void) both 1. This test checks -# GDB's support of GCC's extension. -if [test_compiler_info clang*] { - # Clang doesn't support GCC's extension. - set expected 1 -} else { - set expected [get_integer_valueof a_void 0] -} +set expected [get_integer_valueof a_void 0] gdb_test "print alignof(void)" " = $expected" |