https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116690
--- Comment #6 from Yunbo Ni <yunboni at smail dot nju.edu.cn> --- (In reply to Andrew Pinski from comment #5) > (In reply to Yunbo Ni from comment #4) > > Thanks for your kind and detailed explanation! BTW, when I change the value > > of b to 1 in line 3 and compiled this code with -O0 flag, it gets killed > > with with processing time exceeded. Is this also due to the undefined > > behavior? > > Unless you changed the definition of a to return a result, it is undefined. Thanks. I add return to function `a` and it works.
