Compiler Bug
David B.Anderson
davea at quasar.wpd.sgi.com
Tue May 14 04:33:42 AEST 1991
In article <9105092153.aa04182 at WOLF.BRL.MIL> sue at BRL.MIL (Susan Muuss, VLD/ASB) writes:
>Below is a sample program containing relevant lines of C code that
>caused ccom to dump core with a signal 138. Apparently, a missing semi-colon
>is the culprit. However, the compiler should ordinarily catch that and
/* The code after simplification and preprocessing. */
typedef double point_t[3];
main()
{
int v_char_width; float v_tick_hgt;
float v_x_offset; float v_y_offset;
point_t v_offset;
v_y_offset = -(2 * v_tick_hgt + v_char_width) /* MISSING SEMICOLON */
(v_offset)[X] = ( v_x_offset);
}
Susan Muuss' analysis is exactly right.
I have a fix and will put into release 4.0 today; the result is:
./ccom: Error: , line 11: illegal function
(v_offset)[X] = ( v_x_offset);
--------------------^
which is only a hint that *something* is wrong (sigh).
Thanks for bringing the bug to our attention.
[ David B. Anderson Silicon Graphics davea at sgi.com ]
[``What could possibly go wrong?'' --Calvin
`` Whenever you ask that, my tail gets all bushy.'' --Hobbes ]
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