On 1/6/22 21:31, mihaidavid--- via Gcc-help wrote:
As you can see, the compiler decided that _retval should be allocated in register %edi (see the `mov $-1/$-2, $[_retval]` instructions) but nowhere is it initialized to 0 as the declaration says, so if `ja` is taken, _retval is _undefined_ with a garbage value (I checked with the debugger), but it should actually be 0.
_retval is marked in your asm as an output, therefore you have to set it in the assembly code. gcc knows the assignment to _retval is unused. If you want to modify _retval, use "+rm", not "=rm". -- Andrew Haley (he/him) Java Platform Lead Engineer Red Hat UK Ltd. <https://www.redhat.com> https://keybase.io/andrewhaley EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671
