[Bug target/65602] New: gcc.target/i386/mpx tests FAIL

[ro at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65602

            Bug ID: 65602
           Summary: gcc.target/i386/mpx tests FAIL
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
                CC: ienkovich at gcc dot gnu.org
              Host: i386-pc-solaris2.1[01]
            Target: i386-pc-solaris2.1[01]
             Build: i386-pc-solaris2.1[01]

Many of the new gcc.target/i386/mpx tests FAIL on Solaris/x86 with gas, causing
enormous amounts of testsuite noise.  The failures fall into two categories:

FAIL: gcc.target/i386/mpx/alloca-1-lbv.c   -O0  (test for excess errors)
Excess errors:
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gcc.target/i386/mpx/alloca-1-lbv.c:19:21:
warning: implicit declaration of function 'alloca'
[-Wimplicit-function-declaration]
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gcc.target/i386/mpx/alloca-1-lbv.c:19:21:
warning: incompatible implicit declaration of built-in function 'alloca'

It seems the tests should simply use __builtin_alloca instead.

FAIL: gcc.target/i386/mpx/calloc-1-lbv.c   -O0  (test for excess errors)
Excess errors:
Undefined                       first referenced
 symbol                             in file
__mpx_wrapper_calloc                /var/tmp//ccEYaOnw.o
ld: fatal: symbol referencing errors

WARNING: gcc.target/i386/mpx/calloc-1-lbv.c   -O0  compilation failed to
produce executable

All link tests will fail on all non-Linux targets since only those provide the
MPX runtime libraries. The check_effective_target_mpx test in
gcc.target/i386/mpx/mpx.exp is incomplete, it seems.  IMO the test should be
fixed, rather
than hardcoding Linux/x86 here, which will start to become wrong once non-Linux
targets start to support MPX.

  Rainer