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sscanf: should accept whitespace before integers

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This commit is contained in:
K. Lange 2019-06-29 20:36:28 +09:00
parent f8ea3e3a6c
commit a133f3e5af
1 changed files with 2 additions and 0 deletions
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2
libc/stdio/scanf.c
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@ -31,6 +31,7 @@ int vsscanf(const char *str, const char *format, va_list ap) {
if (*format == 'd') {
int i = 0;
int sign = 1;
while (isspace(*str)) str++;
if (*str == '-') {
sign = -1;
str++;
@ -45,6 +46,7 @@ int vsscanf(const char *str, const char *format, va_list ap) {
*out = i * sign;
} else if (*format == 'u') {
unsigned int i = 0;
while (isspace(*str)) str++;
while (*str && *str >= '0' && *str <= '9') {
i = i * 10 + *str - '0';
str++;