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c-decl.c (merge_decls): Keep DECL_SOURCE_LOCATION and DECL_IN_SYSTEM_HEADER in sync.

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2007-07-16  Rafael Avila de Espindola  <espindola@google.com>

       * c-decl.c (merge_decls): Keep DECL_SOURCE_LOCATION and
       DECL_IN_SYSTEM_HEADER in sync.

From-SVN: r137873
This commit is contained in:
Rafael Avila de Espindola 2008-07-16 09:14:27 +00:00 committed by Rafael Espindola
parent 20d85a9960
commit 238fe3c54b
2 changed files with 26 additions and 12 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2007-07-16 Rafael Avila de Espindola <espindola@google.com>
* c-decl.c (merge_decls): Keep DECL_SOURCE_LOCATION and
DECL_IN_SYSTEM_HEADER in sync.
2008-07-15 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa-sccvn.c (expressions_equal_p): Check type equality.

33
gcc/c-decl.c
View File

@ -1679,12 +1679,27 @@ merge_decls (tree newdecl, tree olddecl, tree newtype, tree oldtype)
if (TREE_DEPRECATED (newdecl))
TREE_DEPRECATED (olddecl) = 1;
/* Keep source location of definition rather than declaration and of
prototype rather than non-prototype unless that prototype is
built-in. */
if ((DECL_INITIAL (newdecl) == 0 && DECL_INITIAL (olddecl) != 0)
|| (old_is_prototype && !new_is_prototype
&& !C_DECL_BUILTIN_PROTOTYPE (olddecl)))
/* If a decl is in a system header and the other isn't, keep the one on the
system header. Otherwise, keep source location of definition rather than
declaration and of prototype rather than non-prototype unless that
prototype is built-in. */
if (CODE_CONTAINS_STRUCT (TREE_CODE (olddecl), TS_DECL_WITH_VIS)
&& DECL_IN_SYSTEM_HEADER (olddecl)
&& !DECL_IN_SYSTEM_HEADER (newdecl) )
{
DECL_IN_SYSTEM_HEADER (newdecl) = 1;
DECL_SOURCE_LOCATION (newdecl) = DECL_SOURCE_LOCATION (olddecl);
}
else if (CODE_CONTAINS_STRUCT (TREE_CODE (olddecl), TS_DECL_WITH_VIS)
&& DECL_IN_SYSTEM_HEADER (newdecl)
&& !DECL_IN_SYSTEM_HEADER (olddecl))
{
DECL_IN_SYSTEM_HEADER (olddecl) = 1;
DECL_SOURCE_LOCATION (olddecl) = DECL_SOURCE_LOCATION (newdecl);
}
else if ((DECL_INITIAL (newdecl) == 0 && DECL_INITIAL (olddecl) != 0)
|| (old_is_prototype && !new_is_prototype
&& !C_DECL_BUILTIN_PROTOTYPE (olddecl)))
DECL_SOURCE_LOCATION (newdecl) = DECL_SOURCE_LOCATION (olddecl);
/* Merge the initialization information. */
@ -1700,12 +1715,6 @@ merge_decls (tree newdecl, tree olddecl, tree newtype, tree oldtype)
if (CODE_CONTAINS_STRUCT (TREE_CODE (olddecl), TS_DECL_WITH_VIS))
{
/* Merge the unused-warning information. */
if (DECL_IN_SYSTEM_HEADER (olddecl))
DECL_IN_SYSTEM_HEADER (newdecl) = 1;
else if (DECL_IN_SYSTEM_HEADER (newdecl))
DECL_IN_SYSTEM_HEADER (olddecl) = 1;
/* Merge the section attribute.
We want to issue an error if the sections conflict but that
must be done later in decl_attributes since we are called