tools: fix up warnings with -Wwrite-strings.

[ccan] / tools / ccanlint / tests / examples_run.c

diff --git a/tools/ccanlint/tests/examples_run.c b/tools/ccanlint/tests/examples_run.c
index 23a3844a5bb7d0d153bb2f55cb638107e77b3a79..5c06c263e5228ebc0fffaf9e19abdc9ce6f7503e 100644 (file)
--- a/tools/ccanlint/tests/examples_run.c
+++ b/tools/ccanlint/tests/examples_run.c
@@ -3,6 +3,7 @@
 #include <ccan/talloc/talloc.h>
 #include <ccan/foreach/foreach.h>
 #include <ccan/str/str.h>
+#include <ccan/cast/cast.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
@@ -116,7 +117,7 @@ static char *find_expect(struct ccan_file *file,
 
                foreach_ptr(fmt, "outputs '%s'", "outputs \"%s\"") {
                        if (scan_for(file, p, fmt, &expect)) {
-                               *input = "";
+                               *input = cast_const(char *, "");
                                *exact = true;
                                return expect;
                        }
@@ -173,7 +174,7 @@ static char *find_expect(struct ccan_file *file,
                            "outputs \"%s\"",
                            "outputs %s") {
                        if (scan_for(file, p, fmt, &expect)) {
-                               *input = "";
+                               *input = cast_const(char *, "");
                                *exact = true;
                                return expect;
                        }
@@ -184,7 +185,7 @@ static char *find_expect(struct ccan_file *file,
                            "output contains \"%s\"",
                            "output contains %s") {
                        if (scan_for(file, p, fmt, &expect)) {
-                               *input = "";
+                               *input = cast_const(char *, "");
                                *exact = false;
                                return expect;
                        }