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Re: CVS commit: src/tests/lib/libc/ssp



On Wed, 29 Dec 2010, Alan Barrett wrote:

On Tue, 28 Dec 2010, Christos Zoulas wrote:
Modified Files:
        src/tests/lib/libc/ssp: h_vsnprintf.c h_vsprintf.c

-static void
-wrap(char *str, size_t len, const char *fmt, ...)
+void
+wrap(size_t len, const char *fmt, ...)
 {
+       char b[10];
        va_list ap;
        va_start(ap, fmt);
-       (void)vsnprintf(str, len, fmt, ap);
+       (void)vsnprintf(b, len, fmt, ap);
+       (void)printf("%s\n", b);
        va_end(ap);
 }

I don't know where "len" comes from, but bad things will happen if
len > sizeof(b).

And that's exactly the point. We're testing that ssp actually notices that "bad things will happen" and trigges a SIGABRT rather than letting the program proceed.



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