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(put_var_into_stack): Check REG != 0 before dereference.

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From-SVN: r2198
This commit is contained in:
Richard Stallman 1992-09-21 06:46:22 +00:00
parent 13c9910fdd
commit 2baccce2f7
1 changed files with 8 additions and 7 deletions
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15
gcc/function.c
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@ -818,11 +818,18 @@ put_var_into_stack (decl)
/* Get the current rtl used for this object and it's original mode. */
reg = TREE_CODE (decl) == SAVE_EXPR ? SAVE_EXPR_RTL (decl) : DECL_RTL (decl);
promoted_mode = GET_MODE (reg);
/* No need to do anything if decl has no rtx yet
since in that case caller is setting TREE_ADDRESSABLE
and a stack slot will be assigned when the rtl is made. */
if (reg == 0)
return;
/* Get the declared mode for this object. */
decl_mode = (TREE_CODE (decl) == SAVE_EXPR ? TYPE_MODE (TREE_TYPE (decl))
: DECL_MODE (decl));
/* Get the mode it's actually stored in. */
promoted_mode = GET_MODE (reg);
/* If this variable comes from an outer function,
find that function's saved context. */
@ -831,12 +838,6 @@ put_var_into_stack (decl)
if (function->decl == context)
break;
/* No need to do anything if decl has no rtx yet
since in that case caller is setting TREE_ADDRESSABLE
and a stack slot will be assigned when the rtl is made. */
if (reg == 0)
return;
/* If this is a variable-size object with a pseudo to address it,
put that pseudo into the stack, if the var is nonlocal. */
if (DECL_NONLOCAL (decl)