Check ld_compile return status

[Alan Modra]

If the compiler failed to produce an object file, there isn't much
point in trying to link it.

	* testsuite/lib/ld-lib.exp (run_ld_link_exec_tests): Do not
	allow test to continue after compilation errors.
	(run_cc_link_tests): Likewise.

diff --git a/ld/testsuite/lib/ld-lib.exp b/ld/testsuite/lib/ld-lib.exp
index f8d5ec6..5ca700b 100644
--- a/ld/testsuite/lib/ld-lib.exp
+++ b/ld/testsuite/lib/ld-lib.exp
@@ -1414,10 +1414,18 @@ proc run_ld_link_exec_tests { ldtests args } {
 	    # incorrect section attributes and the assembler will warn
 	    # them.
 	    if { [ string match "c++" $lang ] } {
-		ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
+		set cmd "$CXX -c $CXXFLAGS $cflags"
 	    } else {
-		ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
+		set cmd "$CC -c $CFLAGS $cflags"
 	    }
+	    if ![ld_compile $cmd $srcdir/$subdir/$src_file $objfile] {
+		set failed 1
+		break
+	    }
+	}
+	if { $failed != 0 } {
+	    unresolved $testname
+	    continue
 	}
 
 	if { [ string match "c++" $lang ] } {
@@ -1549,10 +1557,18 @@ proc run_cc_link_tests { ldtests } {
 	    # incorrect section attributes and the assembler will warn
 	    # them.
 	    if { [ string match "c++" $lang ] } {
-		ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
+		set cmd "$CXX -c $CXXFLAGS $cflags"
 	    } else {
-		ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
+		set cmd "$CC -c $CFLAGS $cflags"
 	    }
+	    if ![ld_compile $cmd $srcdir/$subdir/$src_file $objfile] {
+		set failed 1
+		break
+	    }
+	}
+	if { $failed != 0 } {
+	    unresolved $testname
+	    continue
 	}
 
 	# Clear error and warning counts.

-- 
Alan Modra
Australia Development Lab, IBM