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| author | Paolo Bonzini <bonzini@gnu.org> | 2005-09-29 14:53:39 +0000 |
|---|---|---|
| committer | Paolo Bonzini <bonzini@gcc.gnu.org> | 2005-09-29 14:53:39 +0000 |
| commit | 02eb875fcf9775463bd0f7b26d09e6fc41d09893 (patch) | |
| tree | fa0ae259feba322798f38fbed7affb8907323e43 /gcc/gimplify.c | |
| parent | 090037799cc3bc47500e77ed0b767b8d21bec1aa (diff) | |
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re PR c/21419 (Accepts writting to const via asm)
gcc:
2005-09-29 Paolo Bonzini <bonzini@gnu.org>
PR c/21419
* gimplify.c (gimplify_asm_expr): Raise an error if an output is
read-only.
testsuite:
2005-09-29 Paolo Bonzini <bonzini@gnu.org>
PR c/21419
* gcc.dg/pr21419.c: New test.
From-SVN: r104774
Diffstat (limited to 'gcc/gimplify.c')
| -rw-r--r-- | gcc/gimplify.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/gimplify.c b/gcc/gimplify.c index 42b8740..e5d50e2 100644 --- a/gcc/gimplify.c +++ b/gcc/gimplify.c @@ -3544,6 +3544,12 @@ gimplify_asm_expr (tree *expr_p, tree *pre_p, tree *post_p) parse_output_constraint (&constraint, i, 0, 0, &allows_mem, &allows_reg, &is_inout); + if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (link)))) + { + error ("invalid lvalue in asm output %d", i); + ret = GS_ERROR; + } + if (!allows_reg && allows_mem) lang_hooks.mark_addressable (TREE_VALUE (link)); |