The sizeof operator, when applied to a parameter declared to have array,
yields the size of the adjusted (pointer) type, even if the parameter
declaration specifies a length.
Signed-off-by: Malahal Naineni <[email protected]>
---
libnfs4acl/nfs4_ace_from_string.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/libnfs4acl/nfs4_ace_from_string.c b/libnfs4acl/nfs4_ace_from_string.c
index 9d877fb..462fcc0 100644
--- a/libnfs4acl/nfs4_ace_from_string.c
+++ b/libnfs4acl/nfs4_ace_from_string.c
@@ -100,7 +100,7 @@ parse_alloc_fields(char *buf, char *fields[NUMFIELDS])
if (!buf)
return -EINVAL;
- memset(fields, 0, sizeof(fields));
+ memset(fields, 0, sizeof(char *) * NUMFIELDS);
for (i = 0; buf[i] != '\0'; i++) {
if (buf[i] == ':')
--
1.7.4.4
On 07/21/2011 01:35 PM, Malahal Naineni wrote:
> The sizeof operator, when applied to a parameter declared to have array,
> yields the size of the adjusted (pointer) type, even if the parameter
> declaration specifies a length.
>
> Signed-off-by: Malahal Naineni<malahal-r/[email protected]>
> ---
> libnfs4acl/nfs4_ace_from_string.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/libnfs4acl/nfs4_ace_from_string.c b/libnfs4acl/nfs4_ace_from_string.c
> index 9d877fb..462fcc0 100644
> --- a/libnfs4acl/nfs4_ace_from_string.c
> +++ b/libnfs4acl/nfs4_ace_from_string.c
> @@ -100,7 +100,7 @@ parse_alloc_fields(char *buf, char *fields[NUMFIELDS])
> if (!buf)
> return -EINVAL;
>
> - memset(fields, 0, sizeof(fields));
> + memset(fields, 0, sizeof(char *) * NUMFIELDS);
>
> for (i = 0; buf[i] != '\0'; i++) {
> if (buf[i] == ':')
Could it be compiler specific? It is working fine for me
Test]$ cat sizeof.c
===========
#include <stdio.h>
#define NUMFIELDS 10
main()
{
char *fields1[NUMFIELDS];
char fields2[NUMFIELDS];
printf("sizeof(fields1):%d sizeof(char *)*NUMFIELDS:%d\n",
sizeof(fields1), sizeof(char *)*NUMFIELDS);
printf("sizeof(fields2):%d sizeof(char)*NUMFIELDS:%d\n",
sizeof(fields2), sizeof(char)*NUMFIELDS);
}
============
[jvrao Test]$ make sizeof
cc sizeof.c -o sizeof
[jvrao Test]$ ./sizeof
sizeof(fields1):80 sizeof(char *)*NUMFIELDS:80
sizeof(fields2):10 sizeof(char)*NUMFIELDS:10
[jvrao Test]$ cc -v
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap
--enable-shared --enable-threads=posix --enable-checking=release
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada
--enable-java-awt=gtk --disable-dssi
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre
--enable-libgcj-multifile --enable-java-maintainer-mode
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic
--with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.4.4 20100726 (Red Hat 4.4.4-13) (GCC)
Signed-off-by: Malahal Naineni <[email protected]>
---
libnfs4acl/nfs4_ace_from_string.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/libnfs4acl/nfs4_ace_from_string.c b/libnfs4acl/nfs4_ace_from_string.c
index 462fcc0..510ffee 100644
--- a/libnfs4acl/nfs4_ace_from_string.c
+++ b/libnfs4acl/nfs4_ace_from_string.c
@@ -150,7 +150,7 @@ struct nfs4_ace * nfs4_ace_from_string(char *ace_buf, int is_dir)
/* parse_alloc_fields had split up ace_buf so now we copy it to bufp */
bufp = malloc(strlen(ace_buf) + 1);
if (!bufp)
- goto out_free;
+ goto out;
strcpy(bufp,ace_buf);
ret = parse_alloc_fields(bufp, fields);
--
1.7.4.4
Venkateswararao Jujjuri [[email protected]] wrote:
>
> On 07/21/2011 01:35 PM, Malahal Naineni wrote:
> >The sizeof operator, when applied to a parameter declared to have array,
> >yields the size of the adjusted (pointer) type, even if the parameter
> >declaration specifies a length.
> >
> >---
> > libnfs4acl/nfs4_ace_from_string.c | 2 +-
> > 1 files changed, 1 insertions(+), 1 deletions(-)
> >
> >diff --git a/libnfs4acl/nfs4_ace_from_string.c b/libnfs4acl/nfs4_ace_from_string.c
> >index 9d877fb..462fcc0 100644
> >--- a/libnfs4acl/nfs4_ace_from_string.c
> >+++ b/libnfs4acl/nfs4_ace_from_string.c
> >@@ -100,7 +100,7 @@ parse_alloc_fields(char *buf, char *fields[NUMFIELDS])
> > if (!buf)
> > return -EINVAL;
> >
> >- memset(fields, 0, sizeof(fields));
> >+ memset(fields, 0, sizeof(char *) * NUMFIELDS);
> >
> > for (i = 0; buf[i] != '\0'; i++) {
> > if (buf[i] == ':')
>
> Could it be compiler specific? It is working fine for me
>
>
> Test]$ cat sizeof.c
> ===========
> #include <stdio.h>
> #define NUMFIELDS 10
> main()
> {
> char *fields1[NUMFIELDS];
> char fields2[NUMFIELDS];
>
> printf("sizeof(fields1):%d sizeof(char *)*NUMFIELDS:%d\n",
> sizeof(fields1), sizeof(char *)*NUMFIELDS);
> printf("sizeof(fields2):%d sizeof(char)*NUMFIELDS:%d\n",
> sizeof(fields2), sizeof(char)*NUMFIELDS);
> }
It works as expected in the definition scope. It doesn't work "when
applied to a parameter declared to have array". It looks like, this is
part of the C99 spec, so can't be compiler specific. Try this:
static void fun(char *a[10])
{
printf("sizeof returned: %d\n", sizeof(a));
}
Apologies for the delay; both patches (and some minor git-related
cleanup) applied and pushed out to
git://linux-nfs.org/~bfields/nfs4-acl-tools.git
--b.
J. Bruce Fields [[email protected]] wrote:
> Apologies for the delay; both patches (and some minor git-related
> cleanup) applied and pushed out to
>
> git://linux-nfs.org/~bfields/nfs4-acl-tools.git
>
> --b.
Thank you Bruce!