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Key: PCC-344
Type: Bug Bug
Status: Resolved Resolved
Resolution: Fixed
Priority: Major Major
Assignee: Anders Magnusson
Reporter: Iain Hibbert
Votes: 0
Watchers: 0
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pcc

segmentation fault accessing static struct member, m.b[0]

Created: 09/May/11 09:42 AM   Updated: 10/May/11 09:14 PM
Component/s: Common code
Affects Version/s: None
Fix Version/s: None

Environment: NetBSD/i386


 Description  « Hide
running the following example program

int
main(int ac, char **av)
{
        static struct {
                int a;
                char *b;
        } m = { 0, "foo" };

        return m.b[0];
}

produces a segmentation fault accessing the value of m.b[0]

looking at the assembler it seems that pcc has forgotten to use the offset
of b, or perhaps confused the struct address with the char pointer?

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Anders Magnusson added a comment - 10/May/11 09:14 PM
Heh, this bug has always been around since pcc was ported to i386. Actually the code comes from the vax port but it was not affected due to the old way of handling symbol tables.