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Remove symbol-related static asserts

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commit 3573abe1d added static asserts to ensure that symbol sizes
don't vary.  However, this failed to build on Windows, on at least one
ARM platform (see PR build/25182) and internally at AdaCore for PPC.

So, I think it is probably best to just remove these assertions,
effectively reverting 3573abe1d.

gdb/ChangeLog
2019-11-13  Tom Tromey  <tromey@adacore.com>

	PR build/25182:
	* psympriv.h (partial_symbol): Remove static assert.
	* symtab.h (general_symbol_info, symbol): Remove static assert.

Change-Id: I51940fb2240c474838b48494b5072081701789bb
This commit is contained in:
Tom Tromey 2019-11-11 07:43:13 -07:00
parent 415ed2a175
commit d1aa3cf0bb
3 changed files with 6 additions and 19 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2019-11-13 Tom Tromey <tromey@adacore.com>
PR build/25182:
* psympriv.h (partial_symbol): Remove static assert.
* symtab.h (general_symbol_info, symbol): Remove static assert.
2019-11-12 Andrew Burgess <andrew.burgess@embecosm.com>
* gdbsupport/format.c (format_pieces::format_pieces): Support

6
gdb/psympriv.h
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@ -82,12 +82,6 @@ struct partial_symbol
ENUM_BITFIELD(address_class) aclass : SYMBOL_ACLASS_BITS;
};
/* This struct is size-critical (see comment at the to of symtab.h), so this
assert makes sure the size doesn't change accidentally. Be careful when
purposely increasing the size. */
gdb_static_assert ((sizeof (void *) == 8 && sizeof (partial_symbol) == 40)
|| (sizeof (void *) == 4 && sizeof (partial_symbol) == 24));
/* A convenience enum to give names to some constants used when
searching psymtabs. This is internal to psymtab and should not be
used elsewhere. */

13
gdb/symtab.h
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@ -447,13 +447,6 @@ struct general_symbol_info
short section;
};
/* This struct is size-critical (see comment at the top), so this assert
makes sure the size doesn't change accidentally. Be careful when
purposely increasing the size. */
gdb_static_assert ((sizeof (void *) == 8 && sizeof (general_symbol_info) == 32)
|| (sizeof (void *) == 4
&& sizeof (general_symbol_info) == 20));
extern void symbol_set_demangled_name (struct general_symbol_info *,
const char *,
struct obstack *);
@ -1204,12 +1197,6 @@ struct symbol : public general_symbol_info, public allocate_on_obstack
struct symbol *hash_next = nullptr;
};
/* This struct is size-critical (see comment at the top), so this assert
makes sure the size doesn't change accidentally. Be careful when
purposely increasing the size. */
gdb_static_assert ((sizeof (void *) == 8 && sizeof (symbol) == 72)
|| (sizeof (void *) == 4 && sizeof (symbol) == 40));
/* Several lookup functions return both a symbol and the block in which the
symbol is found. This structure is used in these cases. */