1 files changed, 59 insertions, 0 deletions
diff --git a/ccan/str/test/run-STR_MAX_CHARS.c b/ccan/str/test/run-STR_MAX_CHARS.c
new file mode 100644
index 0000000..ae6969c
--- /dev/null
+++ b/ccan/str/test/run-STR_MAX_CHARS.c
@@ -0,0 +1,59 @@
+#include <ccan/str/str.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <ccan/tap/tap.h>
+#include <stdint.h>
+
+int main(int argc, char *argv[])
+{
+	char str[1000];
+	struct {
+		uint8_t u1byte;
+		int8_t s1byte;
+		uint16_t u2byte;
+		int16_t s2byte;
+		uint32_t u4byte;
+		int32_t s4byte;
+		uint64_t u8byte;
+		int64_t s8byte;
+		void *ptr;
+	} types;
+
+	plan_tests(13);
+
+	memset(&types, 0xFF, sizeof(types));
+
+	/* Hex versions */
+	sprintf(str, "0x%llx", (unsigned long long)types.u1byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.u1byte));
+	sprintf(str, "0x%llx", (unsigned long long)types.u2byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.u2byte));
+	sprintf(str, "0x%llx", (unsigned long long)types.u4byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.u4byte));
+	sprintf(str, "0x%llx", (unsigned long long)types.u8byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.u8byte));
+
+	/* Decimal versions */
+	sprintf(str, "%u", types.u1byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.u1byte));
+	sprintf(str, "%d", types.s1byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.s1byte));
+	sprintf(str, "%u", types.u2byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.u2byte));
+	sprintf(str, "%d", types.s2byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.s2byte));
+	sprintf(str, "%u", types.u4byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.u4byte));
+	sprintf(str, "%d", types.s4byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.s4byte));
+	sprintf(str, "%llu", (unsigned long long)types.u8byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.u8byte));
+	sprintf(str, "%lld", (long long)types.s8byte);
+	ok1(strlen(str) < STR_MAX_CHARS(types.s8byte));
+
+	/* Pointer version. */
+	sprintf(str, "%p", types.ptr);
+	ok1(strlen(str) < STR_MAX_CHARS(types.ptr));
+
+	return exit_status();
+}