--- a/gdb/testsuite/gdb.base/macscp.exp

+++ b/gdb/testsuite/gdb.base/macscp.exp

@@ -33,6 +33,14 @@ if [test_compiler_info gcc*] {

     lappend options additional_flags=-g3

 }

+# Workaround ccache making lineno non-zero for command-line definitions.

+if {[find_gcc] == "gcc" && [file executable "/usr/bin/gcc"]} {

+    set result [catch "exec which gcc" output]

+    if {$result == 0 && [string first "/ccache/" $output] > -1} {

+	lappend options "compiler=/usr/bin/gcc"

+    }

+}

+

 # Generate the intermediate object file.  This is required by Darwin to

 # have access to the .debug_macinfo section.

 if  {[gdb_compile "${srcdir}/${subdir}/macscp1.c" "${objfile}" \