jehanne/qa/kern/args.c

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#include <u.h>
#include <lib9.h>
/*
* The whole regression test I am after here is to call qa/kern/args with
* arguments of various lengths, in order to trigger different stack alignments
* due to varying amounts of stuff in args.
*
* It turned out that gcc compiles fprintf into something that uses
* fpu instructions which require the stack to be 16-aligned, so in
* fact the fprint for sum here would suicide the process if the stack
* it got happened to be not 16-aligned.
*
*/
void
main(int argc, char *argv[])
{
char *p;
int i;
double sum;
sum = 0.0;
for(i = 0; i < argc; i++){
p = argv[i];
sum += strtod(p, nil);
}
fprint(2, "&sum %p\n", &sum);
fprint(2, "sum %f\n", sum);
print("PASS\n");
exits("PASS");
}