As Joel pointed out in...
https://sourceware.org/ml/gdb-patches/2014-07/msg00391.html
...it would be nice to add a test for that.
Tested on Linux x86_64 (Ubuntu 14.10).
gdb/testsuite/ChangeLog
2014-07-15 Simon Marchi <simon.marchi@ericsson.com>
* gdb.base/debug-expr.exp: Test string evaluation with
"debug expression" on.
+2014-07-15 Simon Marchi <simon.marchi@ericsson.com>
+
+ * gdb.base/debug-expr.exp: Test string evaluation with
+ "debug expression" on.
+
2014-07-15 Pedro Alves <palves@redhat.com>
* gdb.base/reread.exp: Use clean_restart.
# This caused gdb to segfault.
test_debug_expr "print /x {char\[4\]} array" \
"\[$\]$decimal = \\{0x0, 0x1, 0x2, 0x3\\}"
+
+# This caused gdb to output garbage and possibly segfault
+gdb_test "print \"hello\"" \
+ ".*OP_STRING\[^\r\n\]*Language-specific string type: 0.*\[\r\n\]\\$$decimal = \"hello\"\[\r\n\].*" \
+ "String evaluation with debug expr"