what is the difference between signals SIGBUS and SIGSEGV ?
when does an application program receive SIGBUS and in which
cases SIGSEGV ?
thanx in advance for any help ...
4  9214 
junky_fellow wrote: what is the difference between signals SIGBUS and SIGSEGV ?
when does an application program receive SIGBUS and in which
cases SIGSEGV ?
Neither of them are defined by the C language, so in order to get info you
better also say which operating system and then take all that to an OS
specific group.
That said, google didn't take me more than a minute to find something(ok, I
knew what I was looking for, but ...).
Uli
Ulrich Eckhardt <do******@knuut .de> writes: junky_fellow wrote: what is the difference between signals SIGBUS and SIGSEGV ?
when does an application program receive SIGBUS and in which
cases SIGSEGV ?
Neither of them are defined by the C language, so in order to get info you
better also say which operating system and then take all that to an OS
specific group.
On the contrary, SIGSEGV is defined by the C standard as "an
invalid access to storage". SIGBUS is, as you say, not defined
as part of C.
--
"C has its problems, but a language designed from scratch would have some too,
and we know C's problems."
--Bjarne Stroustrup
junky_fellow wrote:
what is the difference between signals SIGBUS and SIGSEGV ?
when does an application program receive SIGBUS and in which
cases SIGSEGV ?
thanx in advance for any help ...
OT for comp.lang.c, but... http://www.brainboost.com/search.asp...and+SIGSEGV%3F
--
+-------------------------+--------------------+-----------------------------+
| Kenneth J. Brody | www.hvcomputer.com | |
| kenbrody at spamcop.net | www.fptech.com | #include <std_disclaimer .h> |
+-------------------------+--------------------+-----------------------------+
SEGV - Tends to mean you have attempted to access a segment of
memory that does not exist.
BUS - Tends to mean you have attempted to access a segment of
memory that dies exist but have accessed it in correctly
sometimes certin cpu's require address to be aligned on certin
boundryies eg 8 / 16 / 32 / 64 bit address
Although this is offtopic it can cause havoc when trying
to write C programs on certin types of cpu's because of certin
alignment problems.
PS. i had to rewrite malloc / free / etc.. to get around this
problem on 1 system.
James
On 2 Aug 2004, junky_fellow wrote: what is the difference between signals SIGBUS and SIGSEGV ?
when does an application program receive SIGBUS and in which
cases SIGSEGV ?
thanx in advance for any help ...
--
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