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| author | Mike Frysinger <vapier@gentoo.org> | 2009-10-18 20:43:14 -0400 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2009-10-19 10:36:31 +0200 |
| commit | f67066b6b0740b826ed862615c5ab022aaf4779a (patch) | |
| tree | 87a3430d98c037866660dfadae52392261905b6c | |
| parent | efd988ebaa241bab265b1511052350207cb7aaa0 (diff) | |
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>
| -rw-r--r-- | tools/envcrc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/envcrc.c b/tools/envcrc.c index d02a7dbcdc..d1e84b3b63 100644 --- a/tools/envcrc.c +++ b/tools/envcrc.c @@ -21,6 +21,7 @@ * MA 02111-1307 USA */ +#include <errno.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> @@ -114,7 +115,8 @@ int main (int argc, char **argv) } for (i = start; i != end; i += step) 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 { printf("CRC32 from offset %08X to %08X of environment = %08X\n", (unsigned int) (dataptr - envptr), |