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| author | Sanimir Agovic <sanimir.agovic@intel.com> | 2013-10-12 12:36:16 +0100 |
|---|---|---|
| committer | Joel Brobecker <brobecker@adacore.com> | 2014-04-14 09:14:11 -0700 |
| commit | 3c8452d46ac23d455c30438d0885a738e02b56e1 (patch) | |
| tree | ee4e5f86ade80bff6748d6f4a7d67b51511b55ac /gdb | |
| parent | 4ad88275f81a586e32e86351cc415a97d58ef448 (diff) | |
| download | gdb-3c8452d46ac23d455c30438d0885a738e02b56e1.zip gdb-3c8452d46ac23d455c30438d0885a738e02b56e1.tar.gz gdb-3c8452d46ac23d455c30438d0885a738e02b56e1.tar.bz2 | |
vla: enable sizeof operator for indirection
This patch enables the sizeof operator for indirections:
1| void foo (size_t n) {
2| int vla[n];
3| int *vla_ptr = &vla;
4| }
(gdb) p sizeof(*vla_ptr)
yields sizeof (size_t) * n.
gdb/ChangeLog:
* eval.c (evaluate_subexp_for_sizeof) <UNOP_IND>: Create an indirect
value and retrieve the dynamic type size.
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/eval.c | 4 |
2 files changed, 8 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 1755609..c7efe62 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,10 @@ 2014-04-14 Sanimir Agovic <sanimir.agovic@intel.com> + * eval.c (evaluate_subexp_for_sizeof) <UNOP_IND>: Create an indirect + value and retrieve the dynamic type size. + +2014-04-14 Sanimir Agovic <sanimir.agovic@intel.com> + * eval.c (evaluate_subexp_for_sizeof) <OP_VAR_VALUE>: If the type passed to sizeof is dynamic evaluate the argument to compute the length. @@ -3026,7 +3026,9 @@ evaluate_subexp_for_sizeof (struct expression *exp, int *pos) && TYPE_CODE (type) != TYPE_CODE_ARRAY) error (_("Attempt to take contents of a non-pointer value.")); type = TYPE_TARGET_TYPE (type); - break; + if (is_dynamic_type (type)) + type = value_type (value_ind (val)); + return value_from_longest (size_type, (LONGEST) TYPE_LENGTH (type)); case UNOP_MEMVAL: (*pos) += 3; |