diff options
Diffstat (limited to 'src/pkg/runtime/freebsd/386/signal.c')
| -rw-r--r-- | src/pkg/runtime/freebsd/386/signal.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/pkg/runtime/freebsd/386/signal.c b/src/pkg/runtime/freebsd/386/signal.c index ec8ac3a7d..be2f4ce6f 100644 --- a/src/pkg/runtime/freebsd/386/signal.c +++ b/src/pkg/runtime/freebsd/386/signal.c @@ -64,10 +64,18 @@ sighandler(int32 sig, Siginfo* info, void* context) gp->sigcode0 = info->si_code; gp->sigcode1 = (uintptr)info->si_addr; - sp = (uintptr*)r->mc_esp; - *--sp = r->mc_eip; + // Only push sigpanic if r->mc_eip != 0. + // If r->mc_eip == 0, probably panicked because of a + // call to a nil func. Not pushing that onto sp will + // make the trace look like a call to sigpanic instead. + // (Otherwise the trace will end at sigpanic and we + // won't get to see who faulted.) + if(r->mc_eip != 0) { + sp = (uintptr*)r->mc_esp; + *--sp = r->mc_eip; + r->mc_esp = (uintptr)sp; + } r->mc_eip = (uintptr)sigpanic; - r->mc_esp = (uintptr)sp; return; } |