Check that GDB and the C compiler agree about the sizeof a few basic C

types.

gdb/testsuite/ChangeLog

@@ -1,3 +1,13 @@
+Thu Jul 13 11:52:53 2000  Andrew Cagney  <cagney@b1.cygnus.com>
+
+	* gdb.base/sizeof.exp, gdb.base/sizeof.c: New files.  Compare GDB
+ 	and the compilers sizes.
+
+Wed Jul 12 18:14:29 2000  Andrew Cagney  <cagney@b1.cygnus.com>
+
+	* gdb.base/exprs.exp: Test casts to a pointer including over and
+ 	underflow.
+
 2000-07-09  Nick Duffek  <nsd@redhat.com>
 
 	* gdb.c++/misc.cc (class ClassParam, class_param): Define.

gdb/testsuite/gdb.base/sizeof.c

@@ -0,0 +1,17 @@
+int
+main ()
+{
+  printf ("sizeof (char) == %d\n", sizeof (char));
+  printf ("sizeof (short) == %d\n", sizeof (short));
+  printf ("sizeof (int) == %d\n", sizeof (int));
+  printf ("sizeof (long) == %d\n", sizeof (long));
+  printf ("sizeof (long long) == %d\n", sizeof (long long));
+
+  printf ("sizeof (void *) == %d\n", sizeof (void*));
+  printf ("sizeof (void (*)(void)) == %d\n", sizeof (void (*)(void)));
+
+  printf ("sizeof (float) == %d\n", sizeof (float));
+  printf ("sizeof (double) == %d\n", sizeof (double));
+  printf ("sizeof (long double) == %d\n", sizeof (long double));
+  return 0;
+}

gdb/testsuite/gdb.base/sizeof.exp

@@ -0,0 +1,145 @@
+# Copyright (C) 2000 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  
+
+# Please email any bugs, comments, and/or additions to this file to:
+# bug-gdb@prep.ai.mit.edu
+
+if $tracelevel {
+    strace $tracelevel
+}
+
+#
+# test running programs
+#
+set prms_id 0
+set bug_id 0
+
+set testfile "sizeof"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
+     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
+}
+
+if [get_compiler_info ${binfile}] {
+    return -1;
+}
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load ${binfile}
+
+#
+# set it up at a breakpoint so we can play with the variable values
+#
+
+if ![runto_main] then {
+    perror "couldn't run to breakpoint"
+    continue
+}
+
+#
+# Query GDB for the size of various types
+#
+
+proc get_sizeof { type default } {
+    global gdb_prompt
+    send_gdb "print/d sizeof (${type})\n"
+    gdb_expect {
+	-re "\\$\[0-9\]* = (\[0-9\]*).*$gdb_prompt $" {
+	    set size $expect_out(1,string)
+	    pass "get sizeof ${type} ($size)"
+	}
+	timeout {
+	    set size ${default}
+	    fail "get sizeof ${type} (timeout)"
+	}
+    }
+    return ${size}
+}
+
+set sizeof_char [get_sizeof "char" 1]
+set sizeof_short [get_sizeof "short" 2]
+set sizeof_int [get_sizeof "int" 4]
+set sizeof_long [get_sizeof "long" 4]
+set sizeof_long_long [get_sizeof "long long" 8]
+
+set sizeof_data_ptr [get_sizeof "void *" 4]
+set sizeof_func_ptr [get_sizeof "void (*)(void)" 4]
+
+set sizeof_float [get_sizeof "float" 4]
+set sizeof_double [get_sizeof "double" 8]
+set sizeof_long_double [get_sizeof "long double" 8]
+
+
+#
+# Compare GDB's idea of types with the running program
+#
+
+proc check_sizeof { type size } {
+    global gdb_prompt
+    set pat [string_to_regexp ${type}]
+    send_gdb "next\n"
+    gdb_expect {
+	-re "sizeof \\(${pat}\\) == ${size}\[\r\n\].*$gdb_prompt $" {
+	    pass "check sizeof ${type} == ${size}"
+	}
+	-re ".*$gdb_prompt $" {
+	    fail "check sizeof ${type} == ${size}"
+	}
+	timeout {
+	    fail "check sizeof ${type} == ${size} (timeout)"
+	}
+    }
+}
+
+check_sizeof "char" ${sizeof_char}
+check_sizeof "short" ${sizeof_short}
+check_sizeof "int" ${sizeof_int}
+check_sizeof "long" ${sizeof_long}
+check_sizeof "long long" ${sizeof_long_long}
+
+check_sizeof "void *" ${sizeof_data_ptr}
+check_sizeof "void (*)(void)" ${sizeof_func_ptr}
+
+check_sizeof "float" ${sizeof_float}
+check_sizeof "double" ${sizeof_double}
+check_sizeof "long double" ${sizeof_long_double}
+
+
+#
+# For reference, dump out the entire architecture
+#
+# The output is very long so use a while loop to consume it
+send_gdb "maint print arch\n"
+set ok 1
+while { $ok } {
+    gdb_expect {
+	-re ".*dump" {
+	    #pass "maint print arch $ok"
+	    #set ok [expr $ok + 1]
+	}
+	-re "$gdb_prompt $" {
+	    pass "maint print arch"
+	    set ok 0
+	}
+	timeout {
+	    fail "maint print arch (timeout)"
+	    set ok 0
+	}
+    }
+}