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-rw-r--r--gcc/calls.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/calls.c b/gcc/calls.c
index 94628af..dd034b4 100644
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -3134,7 +3134,9 @@ expand_call (tree exp, rtx target, int ignore)
int arg_nr = return_flags & ERF_RETURN_ARG_MASK;
if (PUSH_ARGS_REVERSED)
arg_nr = num_actuals - arg_nr - 1;
- if (args[arg_nr].reg
+ if (arg_nr >= 0
+ && arg_nr < num_actuals
+ && args[arg_nr].reg
&& valreg
&& REG_P (valreg)
&& GET_MODE (args[arg_nr].reg) == GET_MODE (valreg))