diff options
Diffstat (limited to 'stdio-common/tst-printf.c')
-rw-r--r-- | stdio-common/tst-printf.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/stdio-common/tst-printf.c b/stdio-common/tst-printf.c index 5afa471fca..f0f0e55bc4 100644 --- a/stdio-common/tst-printf.c +++ b/stdio-common/tst-printf.c @@ -20,6 +20,7 @@ #include </usr/include/stdio.h> #define EXIT_SUCCESS 0 #else +#include <limits.h> #include <stdio.h> #include <stdlib.h> #include <string.h> @@ -262,10 +263,32 @@ I am ready for my first lesson today."; puts (""); } + printf ("printf (\"%%hhu\", %u) = %hhu\n", UCHAR_MAX + 2, UCHAR_MAX + 2); + printf ("printf (\"%%hu\", %u) = %hu\n", USHRT_MAX + 2, USHRT_MAX + 2); + puts ("--- Should be no further output. ---"); rfg1 (); rfg2 (); + { + char bytes[7]; + char buf[20]; + + memset (bytes, '\xff', sizeof bytes); + sprintf (buf, "foo%hhn\n", &bytes[3]); + if (bytes[0] != '\xff' || bytes[1] != '\xff' || bytes[2] != '\xff' + || bytes[4] != '\xff' || bytes[5] != '\xff' || bytes[6] != '\xff') + { + puts ("%hhn overwrite more bytes"); + result = 1; + } + if (bytes[3] != 3) + { + puts ("%hhn wrote incorrect value"); + result = 1; + } + } + return result != 0; } |