tests: Make sure we get the requested number of bytes from /dev/urandom

practicalswift · practicalswift · commit 82a96e45870d · 2018-01-12T11:24:43.000+01:00
diff --git a/src/tests.c b/src/tests.c
@@ -4913,7 +4913,7 @@ int main(int argc, char **argv) {
         }
     } else {
         FILE *frand = fopen("/dev/urandom", "r");
-        if ((frand == NULL) || !fread(&seed16, sizeof(seed16), 1, frand)) {
+        if ((frand == NULL) || fread(&seed16, sizeof(seed16), 1, frand) != sizeof(seed16)) {
             uint64_t t = time(NULL) * (uint64_t)1337;
             seed16[0] ^= t;
             seed16[1] ^= t >> 8;

Original file line number	Diff line number	Diff line change
`@@ -4913,7 +4913,7 @@ int main(int argc, char **argv) {`
`4913`	`4913`	`}`
`4914`	`4914`	`} else {`
`4915`	`4915`	`FILE *frand = fopen("/dev/urandom", "r");`
`4916`		`- if ((frand == NULL) \|\| !fread(&seed16, sizeof(seed16), 1, frand)) {`
	`4916`	`+ if ((frand == NULL) \|\| fread(&seed16, sizeof(seed16), 1, frand) != sizeof(seed16)) {`
`4917`	`4917`	`uint64_t t = time(NULL) * (uint64_t)1337;`
`4918`	`4918`	`seed16[0] ^= t;`
`4919`	`4919`	`seed16[1] ^= t >> 8;`