Signed overflow optimization hazards in the kernel
Signed overflow optimization hazards in the kernel
Posted Aug 16, 2012 23:34 UTC (Thu) by mmorrow (guest, #83845)Parent article: Signed overflow optimization hazards in the kernel
Here's my favorite undefined-signed-overflow example:
int f(int x){while(x < x + 1) x += 1; return x;}
gives:
f:
.L2:
jmp .L2
.ident "GCC: (GNU) 4.8.0 20120408 (experimental)"