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vim-patch:7.4.2266

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Problem:    printf() test fails on Windows. "-inf" is not used.
Solution:   Check for Windows-specific values for "nan".  Add sign to "inf"
            when appropriate.

9992237a3e
This commit is contained in:
Jurica Bradaric
2017-03-07 19:20:07 +01:00
committed by Jurica Bradaric
parent df1e7b7eda
commit b4cb5fa610
3 changed files with 24 additions and 8 deletions
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22
src/nvim/strings.c
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@@ -1209,9 +1209,10 @@ int vim_vsnprintf(char *str, size_t str_m, const char *fmt, va_list ap,
}
if (fmt_spec == 'f' && abs_f > 1.0e307) {
const char inf_str[] = f < 0 ? "-inf" : "inf";
// avoid a buffer overflow
memmove(tmp, "inf", sizeof("inf"));
str_arg_l = sizeof("inf") - 1;
memmove(tmp, inf_str, sizeof(inf_str) - 1);
str_arg_l = sizeof(inf_str) - 1;
} else {
format[0] = '%';
int l = 1;
@@ -1234,6 +1235,23 @@ int vim_vsnprintf(char *str, size_t str_m, const char *fmt, va_list ap,
str_arg_l = (size_t)snprintf(tmp, sizeof(tmp), format, f);
assert(str_arg_l < sizeof(tmp));
// Be consistent: Change "1.#IND" to "nan" and
// "1.#INF" to "inf".
char *s = *tmp == '-' ? tmp + 1 : tmp;
if (STRNCMP(s, "1.#INF", 6) == 0) {
STRCPY(s, "inf");
} else if (STRNCMP(s, "1.#IND", 6) == 0) {
STRCPY(s, "nan");
}
// Remove sign before "nan"
if (STRNCMP(tmp, "-nan", 4) == 0) {
STRCPY(tmp, "nan");
}
// Add sign before "inf" if needed.
if (isinf(f) == -1 && STRNCMP(tmp, "inf", 3) == 0) {
STRCPY(tmp, "-inf");
}
if (remove_trailing_zeroes) {
int i;
char *tp;