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| author | Joseph Myers <jsm28@cam.ac.uk> | 2001-11-06 12:39:36 +0000 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2001-11-06 12:39:36 +0000 |
| commit | 207bf4854d656b1aa84cd244184cfefa5a680f78 (patch) | |
| tree | c32872a1f39f18b63b6c13f757df788f6cd41cae /gcc/testsuite/gcc.dg/c99-array-lval-5.c | |
| parent | 25cece2fbdf4b3d4122d1e49b77ef9d144c02a57 (diff) | |
| download | gcc-207bf4854d656b1aa84cd244184cfefa5a680f78.zip gcc-207bf4854d656b1aa84cd244184cfefa5a680f78.tar.gz gcc-207bf4854d656b1aa84cd244184cfefa5a680f78.tar.bz2 | |
re PR c/461 (non-lvalue arrays)
* c-common.c (c_expand_expr_stmt): Apply default conversions to
non-lvalue arrays if C99.
* c-typeck.c (default_conversion): Split out code handling
array-to-pointer and function-to-pointer conversions into a
separate default_function_array_conversion function.
(default_function_array_conversion): New function. Keep track of
whether any NON_LVALUE_EXPRs were stripped. Return non-lvalue
arrays unchanged outside C99 mode instead of giving an error for
them.
(build_component_ref): Use pedantic_non_lvalue when handling
COMPOUND_EXPR. Don't handle COND_EXPR specially.
(convert_arguments): Use default_function_array_conversion.
(build_unary_op): For ADDR_EXPR, take a flag indicating whether
non-lvalues are OK.
(unary_complex_lvalue): Likewise.
(internal_build_compound_expr): Use
default_function_array_conversion. Apply default conversions to
function in compound expression.
(build_c_cast, build_modify_expr, digest_init, build_asm_stmt):
Use default_function_array_conversion.
* doc/extend.texi: Update documentation of subscripting non-lvalue
arrays.
Fixes PR c/461.
testsuite:
* gcc.dg/c90-array-lval-1.c, gcc.dg/c90-array-lval-2.c,
gcc.dg/c99-array-lval-1.c, gcc.dg/c99-array-lval-2.c: Remove
XFAILs. Adjust expected error texts.
* gcc.c-torture/compile/20011106-1.c,
gcc.c-torture/compile/20011106-2.c, gcc.dg/c90-array-lval-3.c,
gcc.dg/c90-array-lval-4.c, gcc.dg/c90-array-lval-5.c,
gcc.dg/c99-array-lval-3.c, gcc.dg/c99-array-lval-4.c,
gcc.dg/c99-array-lval-5.c: New tests.
From-SVN: r46805
Diffstat (limited to 'gcc/testsuite/gcc.dg/c99-array-lval-5.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/c99-array-lval-5.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/c99-array-lval-5.c b/gcc/testsuite/gcc.dg/c99-array-lval-5.c new file mode 100644 index 0000000..57e806d --- /dev/null +++ b/gcc/testsuite/gcc.dg/c99-array-lval-5.c @@ -0,0 +1,26 @@ +/* Test for non-lvalue arrays: test that the unary '&' operator is not + allowed on them, for both C90 and C99. */ + +/* Origin: Joseph Myers <jsm28@cam.ac.uk> */ +/* { dg-do compile } */ +/* { dg-options "-std=iso9899:1999 -pedantic-errors" } */ + +struct s { char c[1]; }; + +extern struct s foo (void); +struct s a, b, c; +int d; + +void +bar (void) +{ + &((foo ()).c); /* { dg-bogus "warning" "warning in place of error" } */ + &((d ? b : c).c); /* { dg-bogus "warning" "warning in place of error" } */ + &((d, b).c); /* { dg-bogus "warning" "warning in place of error" } */ + &((a = b).c); /* { dg-bogus "warning" "warning in place of error" } */ +} +/* { dg-error "lvalue" "bad address-of" { target *-*-* } 17 } + { dg-error "lvalue" "bad address-of" { target *-*-* } 18 } + { dg-error "lvalue" "bad address-of" { target *-*-* } 19 } + { dg-error "lvalue" "bad address-of" { target *-*-* } 20 } +*/ |