diff options
Diffstat (limited to 'stdio-common')
| -rw-r--r-- | stdio-common/tst-printf.c | 23 | ||||
| -rw-r--r-- | stdio-common/vfprintf.c | 10 |
2 files changed, 33 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; } diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c index 6219d795f8..adfb65100c 100644 --- a/stdio-common/vfprintf.c +++ b/stdio-common/vfprintf.c @@ -660,6 +660,8 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap) { \ if (is_long_num) \ number.word = va_arg (ap, unsigned long int); \ + else if (is_char) \ + number.word = (unsigned char) va_arg (ap, unsigned int); \ else if (!is_short) \ number.word = va_arg (ap, unsigned int); \ else \ @@ -935,6 +937,10 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap) *(long long int *) va_arg (ap, void *) = done; \ else if (is_long_num) \ *(long int *) va_arg (ap, void *) = done; \ + else if (is_char) \ + *(char *) va_arg (ap, void *) = done; \ + else if (is_long_num) \ + *(long int *) va_arg (ap, void *) = done; \ else if (!is_short) \ *(int *) va_arg (ap, void *) = done; \ else \ @@ -945,6 +951,10 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap) *(long long int *) args_value[fspec->data_arg].pa_pointer = done; \ else if (is_long_num) \ *(long int *) args_value[fspec->data_arg].pa_pointer = done; \ + else if (is_long_num) \ + *(long int *) args_value[fspec->data_arg].pa_pointer = done; \ + else if (is_char) \ + *(char *) args_value[fspec->data_arg].pa_pointer = done; \ else if (!is_short) \ *(int *) args_value[fspec->data_arg].pa_pointer = done; \ else \ |