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RE: segmentation fault
On 05 June 2007 16:49, fred.cotton@oasincorp.com wrote:
> With apologies for being new:
> In porting a hardware configuration from gcc-3.4.1 to gcc-4.2.0, I'm
> getting the following error message:
>
> In file included from /cygdrive/c/gcc-4.2.0/gcc/crtstuff.c:68:
> /cygdrive/c/gcc-4.2.0/gcc/tsystem.h:53: internal compiler error:
> Segmentation fault.
>
> Lines 52-54 of tsystem.h are:
>
> #ifndef malloc
> extern void *malloc (size_t);
> #endif
>
> If I remove these lines, all the other extern statements fail also.
> What precisely does Segmentation fault mean in this context? Is it
> referring to the underlying Windows XP?
It's a memory-protection error, usually indicating you have dereferenced a NULL pointer or otherwise tried to access an unmapped memory address.
> What sort of compiler, configuration or operating system parameters could
> be the cause?
> Where should I be looking?
Almost certainly your backend is dereferencing a pointer without realising it's NULL at the time. Given the association with extern decls, do you implement a TARGET_ENCODE_SECTION_INFO macro?
cheers,
DaveK
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