V3s_Allwinner
/
uboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 2 Wiki Activity

envcrc: check return value of fwrite() 

Newer toolchains will often complain about unchecked fwrite():
	envcrc.c:117: warning: ignoring return value of `fwrite, declared
		with attribute warn_unused_result

So check the return value to silence the warnings.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2009-10-18 20:43:14 -04:00 committed by Wolfgang Denk
parent efd988ebaa
commit f67066b6b0
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
tools/envcrc.c
View File

@ -21,6 +21,7 @@
* MA 02111-1307 USA * MA 02111-1307 USA
*/ */
#include <errno.h>
#include <stdio.h> #include <stdio.h>
#include <stdint.h> #include <stdint.h>
#include <stdlib.h> #include <stdlib.h>
@ -114,7 +115,8 @@ int main (int argc, char **argv)
} }
for (i = start; i != end; i += step) for (i = start; i != end; i += step)
printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8)); printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8));
fwrite(dataptr, 1, datasize, stdout); if (fwrite(dataptr, 1, datasize, stdout) != datasize)
fprintf(stderr, "fwrite() failed: %s\n", strerror(errno));
} else { } else {
printf("CRC32 from offset %08X to %08X of environment = %08X\n", printf("CRC32 from offset %08X to %08X of environment = %08X\n",
(unsigned int) (dataptr - envptr), (unsigned int) (dataptr - envptr),