[rfa/testsuite] constvars.exp, volatile.exp: hp-ux

[mec.gnu@mindspring.com (Michael Elizabeth Chastain)]

This patch improves constvars.exp and volatile.exp to work with
the HP compilers on hp-ux.

First, there was some code to force use of the HP C++ compiler instead
of the HP C compiler.  I killed that.  The user decides at a higher
level which compilers to use for which languages.

That bit of code wasn't even helping because HP C++ returns a (valid)
compiler error for constvars.c.  For the curious, this line is
not valid C++:

      # Uninitialized const/reference member in class/aggregate.
      struct crass { char * const ptr; } crass;

Since ptr itself is const, it can't be changed after it's initialized,
so it must be initialized.

I'm not dealing with that right now.  gdb.base/*.c does not have to
compile with a C++ compiler.

Second, I removed a duplicate call to get_compiler_info.  That's
just cleanup.

Third, in local_compiler_xfail_check, I added setup_xfail for
$hp_cc_compiler.  The HP Ansi C compiler does not emit const qualifiers,
so this is really an XFAIL, a limitation in the external compiler.  I
checked that by stepping through hpread.c by hand.

Tested on:

  native hppa2.0w-hp-hpux11.11, hp ansi c

Okay to commit?

Michael C

2004-01-07  Michael Chastain  <mec.gnu@mindspring.com>

	* gdb.base/constvars.exp: Do not force lang=c++ if using HP
	compilers.  Delete duplicate call to get_compiler_info.
	(local_compiler_xfail_check): setup_xfail if $hp_cc_compiler.
	* gdb.base/volatile.exp: Likewise.

diff -c3p -r /house/chastain/HEAD/src/gdb/testsuite/gdb.base/constvars.exp gdb.base/constvars.exp
*** /house/chastain/HEAD/src/gdb/testsuite/gdb.base/constvars.exp	2003-11-29 01:56:06.000000000 -0500
--- gdb.base/constvars.exp	2004-01-07 16:47:17.000000000 -0500
***************
*** 1,4 ****
! # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003
  # Free Software Foundation, Inc.
  
  # This program is free software; you can redistribute it and/or modify
--- 1,4 ----
! # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
  # Free Software Foundation, Inc.
  
  # This program is free software; you can redistribute it and/or modify
*************** if [get_compiler_info ${binfile}] {
*** 48,70 ****
      return -1;
  }
  
! if {$hp_aCC_compiler || $hp_cc_compiler} {
!     set lang "c++"
! } else {
!     set lang ""
! }
! 
! if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [concat debug $lang]] != "" } {
      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  }
  
- # Create and source the file that provides information about the compiler
- # used to compile the test case.
- 
- if [get_compiler_info ${binfile}] {
-     return -1;
- }
- 
  gdb_exit
  gdb_start
  gdb_reinitialize_dir $srcdir/$subdir
--- 48,57 ----
      return -1;
  }
  
! if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug ] != "" } {
      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  }
  
  gdb_exit
  gdb_start
  gdb_reinitialize_dir $srcdir/$subdir
*************** proc local_compiler_xfail_check { } {
*** 88,93 ****
--- 75,85 ----
  	    setup_xfail "*-*-*" 
  	}
      }
+ 
+     global hp_cc_compiler
+     if { $hp_cc_compiler } {
+ 	setup_xfail "hppa*-*-hpux*"
+     }
  }
  
  send_gdb "break marker1\n" ; gdb_expect -re ".*$gdb_prompt $"
diff -c3p -r /house/chastain/HEAD/src/gdb/testsuite/gdb.base/volatile.exp gdb.base/volatile.exp
*** /house/chastain/HEAD/src/gdb/testsuite/gdb.base/volatile.exp	2004-01-06 14:05:14.000000000 -0500
--- gdb.base/volatile.exp	2004-01-07 16:50:05.000000000 -0500
*************** if [get_compiler_info ${binfile}] {
*** 55,74 ****
      return -1;
  }
  
! if {$hp_aCC_compiler || $hp_cc_compiler} {
!     set lang "c++"
! } else {
!     set lang ""
! }
! 
! if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [concat debug $lang]] != "" } {
       gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  }
  
- if  [get_compiler_info ${binfile}] {
-     return -1
- }
- 
  gdb_exit
  gdb_start
  gdb_reinitialize_dir $srcdir/$subdir
--- 55,64 ----
      return -1;
  }
  
! if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug ] != "" } {
       gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  }
  
  gdb_exit
  gdb_start
  gdb_reinitialize_dir $srcdir/$subdir
*************** proc local_compiler_xfail_check { } {
*** 91,96 ****
--- 81,91 ----
  	    setup_xfail "*-*-*" 
  	}
      }
+ 
+     global hp_cc_compiler
+     if { $hp_cc_compiler } {
+ 	setup_xfail "hppa*-*-hpux*"
+     }
  }
  
  send_gdb "break marker1\n" ; gdb_expect -re ".*$gdb_prompt $"