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| author | Joseph Myers <jsm28@cam.ac.uk> | 2001-12-04 22:55:40 +0000 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2001-12-04 22:55:40 +0000 |
| commit | db3acfa5476e5af834fee38ad8e1b193a8f018dc (patch) | |
| tree | 47e4fa29a6462438cb5aea8ae3e2c690243e3f52 /gcc/c-common.c | |
| parent | d062a680ab959bc09d0f2572ac16e444b5396aa4 (diff) | |
| download | gcc-db3acfa5476e5af834fee38ad8e1b193a8f018dc.zip gcc-db3acfa5476e5af834fee38ad8e1b193a8f018dc.tar.gz gcc-db3acfa5476e5af834fee38ad8e1b193a8f018dc.tar.bz2 | |
re PR c/4787 (Different anonymous variables declared but only one allocated when the initialization is the same)
* c-common.def (COMPOUND_LITERAL_EXPR): New.
* c-common.c (c_expand_expr): Handle COMPOUND_LITERAL_EXPR.
(c_staticp): New function.
* c-common.h (COMPOUND_LITERAL_EXPR_DECL): New.
(c_staticp): Declare.
* c-typeck.c (default_function_array_conversion, build_unary_op):
Don't handle CONSTRUCTOR specially.
(lvalue_p, mark_addressable): Handle COMPOUND_LITERAL_EXPR.
* c-decl.c (build_compound_literal): New function.
* c-tree.h (build_compound_literal): Declare.
* c-parse.in (primary): Use build_compound_literal.
* c-lang.c (LANG_HOOKS_STATICP): Define.
* objc/objc-lang.c (LANG_HOOKS_STATICP): Likewise.
* doc/c-tree.texi: Document COMPOUND_LITERAL_EXPR.
* doc/extend.texi: Update documentation of compound literals.
Fixes PR c/4787.
testsuite:
* gcc.c-torture/execute/20000722-1.x,
gcc.c-torture/execute/20010123-1.x: Remove.
* gcc.c-torture/compile/init-3.c: Don't use a compound literal.
* gcc.dg/c90-complit-1.c, gcc.dg/c99-complit-1.c,
gcc.dg/c99-complit-2.c: New tests.
From-SVN: r47629
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index a7d005b..f5fc0d3 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -3432,6 +3432,15 @@ c_expand_expr (exp, target, tmode, modifier) } break; + case COMPOUND_LITERAL_EXPR: + { + /* Initialize the anonymous variable declared in the compound + literal, then return the variable. */ + tree decl = COMPOUND_LITERAL_EXPR_DECL (exp); + emit_local_var (decl); + return expand_expr (decl, target, tmode, modifier); + } + default: abort (); } @@ -3482,6 +3491,18 @@ c_unsafe_for_reeval (exp) return -1; } +/* Hook used by staticp to handle language-specific tree codes. */ + +int +c_staticp (exp) + tree exp; +{ + if (TREE_CODE (exp) == COMPOUND_LITERAL_EXPR + && TREE_STATIC (COMPOUND_LITERAL_EXPR_DECL (exp))) + return 1; + return 0; +} + /* Tree code classes. */ #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE, |