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https://github.com/jart/cosmopolitan.git
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9c6d78c26d
The C standard states:
> The fprintf function returns the number of characters transmitted,
> or a negative value if an output or encoding error occurred or if
> the implementation does not support a specified width length
> modifier.
- C Standard, 7.23.6.1.15. The fprintf function
However, cosmopolitan fails to return a negative value in the case of
an output error, meaning that a program such as:
#include <stdio.h>
int main()
{
FILE *fp = fopen("/dev/full", "w");
setbuf(fp, NULL);
printf("fprintf: %d\n", fprintf(fp, "test\n"));
printf("fflush: %d\n", fflush(fp));
}
will, under cosmopolitan, print that no error occured in either of the
calls to fprintf and fflush.
This patch fixes this, along with the associated GitHub issue,
https://github.com/jart/cosmopolitan/issues/784
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|---|---|---|
| .. | ||
| atoi_test.c | ||
| basename_test.c | ||
| dirname_test.c | ||
| encodenf32_test.c | ||
| fmt_test.c | ||
| formatbinary64_test.c | ||
| formatflex64_test.c | ||
| formathex64_test.c | ||
| formatint64_test.c | ||
| formatint64thousands_test.c | ||
| formatoctal32_test.c | ||
| formatoctal64_test.c | ||
| fprintf_test.c | ||
| imaxdiv_test.c | ||
| itoa64radix16_test.c | ||
| joinpaths_test.c | ||
| lengthuint64_test.c | ||
| palandprintf_test.c | ||
| printf_uppercase_e_static_yoink_test.c | ||
| printf_uppercase_f_static_yoink_test.c | ||
| printf_uppercase_g_static_yoink_test.c | ||
| sizetol_test.c | ||
| sleb128_test.c | ||
| sprintf_s.inc | ||
| sprintf_s_test.c | ||
| sscanf_test.c | ||
| strerror_r_test.c | ||
| stripexts_test.c | ||
| test.mk | ||
| timevaltofiletime_test.c | ||
| uleb64_test.c | ||
| uleb128_test.c | ||
| zleb64_test.c | ||