Changeset dd0502ae in mainline for uspace/lib/c/test/strtol.c

Timestamp:

2019-05-27T16:18:02Z (5 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

1c9bf292

Parents:

0260034

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2019-05-27 15:58:34)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2019-05-27 16:18:02)

Message:

Add test for negative input to strtoul()

File:

• uspace/lib/c/test/strtol.c (modified) (2 diffs)

uspace/lib/c/test/strtol.c

@@ -38 +38 @@
 #include <stdlib.h>
 #include <str.h>
+#include <limits.h>
 
 PCUT_INIT;
@@ -249 +250 @@
 }
 
+PCUT_TEST(strtoul_negative_wraparound)
+{
+        long output;
+        char *endp;
+        char *endp_unchanged = (char *) "endp_unchanged unique pointer";
+        int errno_unchanged = -1;
+        const char *input;
+        int base;
+
+        /*
+         * N2176 7.22.1.4 The strtol, strtoll, strtoul, and strtoull functions
+         *
+         * "If the subject sequence begins with a minus sign, the value
+         * resulting from the conversion is negated (in the return type)."
+         */
+
+        endp = endp_unchanged;
+        errno = errno_unchanged;
+        output = strtoul(input = "-10", &endp, base = 0);
+        PCUT_ASSERT_INT_EQUALS(errno_unchanged, errno);
+        PCUT_ASSERT_PTR_EQUALS(input + 3, endp);
+        PCUT_ASSERT_UINT_EQUALS(-(10ul), output);
+}
+
 PCUT_TEST(strtol_fringe)
 {