linux下的gcc编译器
源代码在线查看： uninit-8.c
/* Uninitialized variable warning tests... Inspired by part of optabs.c:expand_binop. May be the same as uninit-1.c. */ /* { dg-do compile } */ /* { dg-options "-O -Wuninitialized" } */ #include void add_bignums (int *out, int *x, int *y) { int p, sum; int carry; /* { dg-bogus "carry" "uninitialized variable warning" { xfail *-*-* } } */ p = 0; for (; *x; x++, y++, out++, p++) { if (p) sum = *x + *y + carry; else sum = *x + *y; if (sum < 0) { carry = 1; sum -= INT_MAX; } else carry = 0; } }
