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| author | Richard Henderson <rth@gcc.gnu.org> | 2001-01-29 17:38:41 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2001-01-29 17:38:41 -0800 |
| commit | 2b5f2501ea98677dd265291c4032d89fe1d1641f (patch) | |
| tree | 52d2231f3b17ee44d77acc73b2bdd37a0c579c0e /gcc/tree.h | |
| parent | 1270a9b381f178bcfe2079551cd1d0abc12de9bc (diff) | |
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* tree.h (TYPE_STUB_DECL): Add documentation.
From-SVN: r39340
Diffstat (limited to 'gcc/tree.h')
| -rw-r--r-- | gcc/tree.h | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -939,6 +939,13 @@ struct tree_block #define TYPE_ALIGN_UNIT(NODE) \ (TYPE_ALIGN (NODE) / BITS_PER_UNIT) +/* If your language allows you to declare types, and you want debug info + for them, then you need to generate corresponding TYPE_DECL nodes. + These "stub" TYPE_DECL nodes have no name, and simply point at the + type node. You then set the TYPE_STUB_DECL field of the type node + to point back at the TYPE_DECL node. This allows the debug routines + to know that the two nodes represent the same type, so that we only + get one debug info record for them. */ #define TYPE_STUB_DECL(NODE) (TREE_CHAIN (NODE)) /* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type |