If GDB says it can't find the struct the function returned, report

those tests as `unsupported'.
* gdb.base/call-rt-st.exp (print_struct_call): New function.
Rewrite subsequent tests to use it.

gdb/testsuite/ChangeLog

@@ -1,5 +1,10 @@
 2001-12-07  Jim Blandy  <jimb@redhat.com>
 
+	If GDB says it can't find the struct the function returned, report
+	those tests as `unsupported'.
+	* gdb.base/call-rt-st.exp (print_struct_call): New function.
+	Rewrite subsequent tests to use it.
+
 	If GDB says it can't find the struct the function returned, report
 	those tests as `unsupported'.
 	* gdb.base/structs.exp (call_struct_func): New function.

gdb/testsuite/gdb.base/call-rt-st.exp

@@ -135,118 +135,78 @@ gdb_expect {
       timeout           { fail "(timeout)finish out from loop_count"}
 }
 
-if ![gdb_skip_stdio_test "print print_struct_rep(*struct1)"] {
+# Ask GDB to print the value of EXPR, and expect to see the regexp
-    send_gdb "print print_struct_rep(*struct1)\n"
+# RESULT in the output.  If we get back the error message "Function
+# return value unknown", call that an `unsupported' test; on some
+# architectures, it's impossible to find structs returned by value
+# reliably.
+proc print_struct_call { expr result } {
+    global gdb_prompt
+
+    set command "print $expr"
+    send_gdb "${command}\n"
     gdb_expect {
-	-re ".*Contents of struct1:\[ \t\n\r\]+22\[ \t\]+0\[ \t\n\r\]+.\[0-9\]+ = \\{value = 5, head = 0\\}.*$gdb_prompt $" {
+        -re "$result\[\r\n\]+$gdb_prompt $" {
-	    pass "print print_struct_rep(*struct1, *struct2, *struct3)"
+            pass "$command"
-	}
+        }
-	-re ".*$gdb_prompt $" { 
+        -re "Function return value unknown.\[\r\n\]+$gdb_prompt $" {
-	    fail "print print_struct_rep(*struct1, *struct2, *struct3)" 
+            unsupported "$command"
-	}
+        }
-	timeout           { 
+        -re "$gdb_prompt $" {
-	    fail "(timeout) print_struct_rep(*struct1, *struct2, *struct3)" 
+            fail "$command"
-	}
+        }
+        timeout {
+            fail "$command (timeout)"
+        }
     }
 }
 
+
+if ![gdb_skip_stdio_test "print print_struct_rep(*struct1)"] {
+    print_struct_call "print_struct_rep(*struct1)" \
+            ".*Contents of struct1:\[ \t\n\r\]+22\[ \t\]+0\[ \t\n\r\]+.\[0-9\]+ = \\{value = 5, head = 0\\}"
+}
+
 if ![gdb_skip_stdio_test "print print_one_large_struct(...)"] {
-    send_gdb "print print_one_large_struct(*list1)\n"
+    print_struct_call "print_one_large_struct(*list1)" \
-    gdb_expect {
+            ".*\[ \t\]+4\[ \t\]+1\[ \r\n\]+.\[0-9\]+ = \\{next_index = \\{1, 2, 3, 4, 5, 6, 7, 8, 9, 10\\}, values = \\{4, 6, 8, 10, 12, 14, 16, 18, 20, 22\\}, head = 0\\}"
-	-re ".*\[ \t\]+4\[ \t\]+1\[ \r\n\]+.\[0-9\]+ = \\{next_index = \\{1, 2, 3, 4, 5, 6, 7, 8, 9, 10\\}, values = \\{4, 6, 8, 10, 12, 14, 16, 18, 20, 22\\}, head = 0\\}.*$gdb_prompt $" {
-	    pass "print print_one_large_struct(*list1)"
-	}
-	-re ".*$gdb_prompt $" { fail "print print_one_large_struct(*list1)" }
-	timeout           { fail "(timeout) print_one_large_struct(*list1)" }
-    }
 }
 
 if {![gdb_skip_float_test "print print_one_double(*d1)"] && \
-    ![gdb_skip_stdio_test "print print_one_double(*d1)"] } {
+        ![gdb_skip_stdio_test "print print_one_double(*d1)"] } {
-    send_gdb "print print_one_double(*d1)\n";
+    print_struct_call "print_one_double(*d1)" \
-    gdb_expect {
+            ".*Contents of one_double_t:\[ \r\n\]+1\\.111110\[ \r\n\]+.\[0-9\]+ = \\{double1 = 1\\.11111\\}"
-	-re ".*Contents of one_double_t:\[ \r\n\]+1\\.111110\[ \r\n\]+.\[0-9\]+ = \\{double1 = 1\\.11111\\}.*$gdb_prompt $" {
-	    pass "print print_one_double(*d1)"
-	}
-	-re ".*$gdb_prompt $" { fail "print print_one_double(*d1)" }
-	timeout           { fail "(timeout) print_one_double(*d1)" }
-    }
 }
 
 if {![gdb_skip_float_test "print print_two_floats(*f3)"] && \
-    ![gdb_skip_stdio_test "print print_two_floats(*f3)"] } {
+        ![gdb_skip_stdio_test "print print_two_floats(*f3)"] } {
-    send_gdb "print print_two_floats(*f3)\n"
+    print_struct_call "print_two_floats(*f3)" \
-    gdb_expect {
+            ".*Contents of two_floats_t:\[ \r\n\]+-2\\.345000\[ \t]+1\\.000000\[ \r\n\]+.\[0-9\]+ = \\{float1 = -2\\.34500003, float2 = 1\\}"
-	-re ".*Contents of two_floats_t:\[ \r\n\]+-2\\.345000\[ \t]+1\\.000000\[ \r\n\]+.\[0-9\]+ = \\{float1 = -2\\.34500003, float2 = 1\\}.*$gdb_prompt $" {
-	    pass "print print_two_floats(*f3)"
-	}
-	-re ".*$gdb_prompt $" { fail "print print_two_floats(*f3)" }
-	timeout           { fail "(timeout) print_two_floats(*f3)" }
-    }
 }
 
 if ![gdb_skip_stdio_test "print print_bit_flags(*flags)"] {
-    send_gdb "print print_bit_flags(*flags)\n"
+    print_struct_call "print_bit_flags(*flags)" \
-    gdb_expect {
+            ".*alpha\[ \r\n\]+gamma\[ \r\n\]+epsilon\[ \r\n\]+.\[0-9\]+ = \\{alpha = 1, beta = 0, gamma = 1, delta = 0, epsilon = 1, omega = 0\\}"
-	-re ".*alpha\[ \r\n\]+gamma\[ \r\n\]+epsilon\[ \r\n\]+.\[0-9\]+ = \\{alpha = 1, beta = 0, gamma = 1, delta = 0, epsilon = 1, omega = 0\\}\[ \r\n\]+$gdb_prompt $" {
-	    pass "print print_bit_flags(*flags)"
-	}
-	-re ".*$gdb_prompt $" { fail "print print_bit_flags(*flags)" }
-	timeout           { fail "(timeout) print_bit_flags(*flags)" }
-    }
 }
 
 if ![gdb_skip_stdio_test "print print_bit_flags_combo(*flags_combo)"] {
-    send_gdb "print print_bit_flags_combo(*flags_combo)\n"
+    print_struct_call "print_bit_flags_combo(*flags_combo)" \
-    gdb_expect {
+            ".*alpha\[ \r\n\]+gamma\[ \r\n\]+epsilon\[ \r\n\]+ch1: y\[ \t\]+ch2: n\[ \r\n\]+.\[0-9\]+ = \\{alpha = 1, beta = 0, ch1 = 121 'y', gamma = 1, delta = 0, ch2 = 110 'n', epsilon = 1, omega = 0\\}"
-	-re ".*alpha\[ \r\n\]+gamma\[ \r\n\]+epsilon\[ \r\n\]+ch1: y\[ \t\]+ch2: n\[ \r\n\]+.\[0-9\]+ = \\{alpha = 1, beta = 0, ch1 = 121 'y', gamma = 1, delta = 0, ch2 = 110 'n', epsilon = 1, omega = 0\\}\[ \r\n\]+$gdb_prompt $" {
-	    pass "print print_bit_flags_combo(*flags_combo)"
-	}
-	-re ".*$gdb_prompt $" { 
-	    fail "print print_bit_flags_combo(*flags_combo)" 
-	}
-	timeout           { 
-	    fail "(timeout) print_bit_flags_combo(*flags_combo)" 
-	}
-    }
 }
 
 if ![gdb_skip_stdio_test "print print_three_chars(*three_chars)"] {
-    send_gdb "print print_three_chars(*three_char)\n"
+    print_struct_call "print_three_chars(*three_char)" \
-    gdb_expect {
+            ".*Contents of three_char_t:\[ \r\n\]+x\[ \t\]+y\[ \t\]+z\[ \r\n\]+.\[0-9\]+ = \\{ch1 = 120 'x', ch2 = 121 'y', ch3 = 122 'z'\\}"
-	-re ".*Contents of three_char_t:\[ \r\n\]+x\[ \t\]+y\[ \t\]+z\[ \r\n\]+.\[0-9\]+ = \\{ch1 = 120 'x', ch2 = 121 'y', ch3 = 122 'z'\\}\[ \r\n\]+$gdb_prompt $" {
-	    pass "print print_three_chars(*three_char)"
-	}
-	-re ".*$gdb_prompt $" { fail "print print_three_chars(*three_char)" }
-	timeout           { fail "(timeout) print_three_chars(*three_char)" }
-    }
 }
 
 if ![gdb_skip_stdio_test "print print_five_chars(*five_chars)"] {
-    send_gdb "print print_five_chars(*five_char)\n"
+    print_struct_call "print_five_chars(*five_char)" \
-    gdb_expect {
+            ".*Contents of five_char_t:\[ \r\n\]+h\[ \t\]+e\[ \t\]+l\[ \t\]+l\[ \t\]+o\[ \r\n\]+.\[0-9\]+ = \\{ch1 = 104 'h', ch2 = 101 'e', ch3 = 108 'l', ch4 = 108 'l', ch5 = 111 'o'\\}"
-	-re ".*Contents of five_char_t:\[ \r\n\]+h\[ \t\]+e\[ \t\]+l\[ \t\]+l\[ \t\]+o\[ \r\n\]+.\[0-9\]+ = \\{ch1 = 104 'h', ch2 = 101 'e', ch3 = 108 'l', ch4 = 108 'l', ch5 = 111 'o'\\}\[ \r\n\]+$gdb_prompt $" {
-	    pass "print print_five_chars(*five_char)"
-	}
-	-re ".*$gdb_prompt $" { fail "print print_five_chars(*five_char)" }
-	timeout           { fail "(timeout) print_five_chars(*five_char)" }
-    }
 }
 
 if ![gdb_skip_stdio_test "print print_int_char_combo(*int_char_combo)"] {
-    send_gdb "print print_int_char_combo(*int_char_combo)\n"
+    print_struct_call "print_int_char_combo(*int_char_combo)" \
-    gdb_expect {
+            ".*Contents of int_char_combo_t:\[ \r\n\]+13\[ \t\]+!\[ \r\n\]+.\[0-9\]+ = \\{int1 = 13, ch1 = 33 '!'\\}"
-	-re ".*Contents of int_char_combo_t:\[ \r\n\]+13\[ \t\]+!\[ \r\n\]+.\[0-9\]+ = \\{int1 = 13, ch1 = 33 '!'\\}\[ \r\n\]+$gdb_prompt $" {
-	    pass "print print_int_char_combo(*int_char_combo)"
-	}
-	-re ".*$gdb_prompt $" { 
-	    fail "print print_int_char_combo(*int_char_combo)" 
-	}
-	timeout           { 
-	    fail "(timeout) print_int_char_combo(*int_char_combo)" 
-	}
-    }
 }
 
 return
-