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authorIan Lance Taylor <ian@airs.com>1993-01-29 19:47:56 +0000
committerIan Lance Taylor <ian@airs.com>1993-01-29 19:47:56 +0000
commitf31cb329d51c1344be1d0aaef7276f653ba23c5b (patch)
tree16b118c5ce5e0c7b53f091e896479c1a1423adf2 /ld
parent8a3efe67ae7637f8c58d8e65a246b98ac1e0a91d (diff)
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Fri Jan 29 09:57:58 1993 Ian Lance Taylor (ian@cygnus.com)
* ldmain.c (subfile_wanted_p): If we already have a common definition of a symbol, don't necessarily pull in an object file that provides a non-common definition.
Diffstat (limited to 'ld')
-rw-r--r--ld/ChangeLog4
-rw-r--r--ld/ldmain.c15
2 files changed, 14 insertions, 5 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog
index d9ea6cb..b7ddaed 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,5 +1,9 @@
Fri Jan 29 09:57:58 1993 Ian Lance Taylor (ian@cygnus.com)
+ * ldmain.c (subfile_wanted_p): If we already have a common
+ definition of a symbol, don't necessarily pull in an object file
+ that provides a non-common definition.
+
* ldlex.l (COMMAND): Accept -EB and -EL command line arguments,
returning OPTION_EB and OPTION_EL. gcc passes these to a MIPS
linker.
diff --git a/ld/ldmain.c b/ld/ldmain.c
index 207b604..767999b 100644
--- a/ld/ldmain.c
+++ b/ld/ldmain.c
@@ -958,9 +958,15 @@ subfile_wanted_p (entry)
if (sp->srefs_chain != (asymbol **) NULL
|| sp->scoms_chain != (asymbol **) NULL)
{
- /* This is a symbol we are looking for. It is either
- not yet defined or common. */
-
+ /* This is a symbol we are looking for. It is
+ either not yet defined or common. If this is a
+ common symbol, then if the symbol in the object
+ file is common, we need to combine sizes. But if
+ we already have a common symbol, and the symbol
+ in the object file is not common, we don't want
+ the object file: it is providing a definition for
+ a symbol that we already have a definition for
+ (this is the else condition below). */
if (bfd_is_com_section (p->section))
{
@@ -1017,8 +1023,7 @@ subfile_wanted_p (entry)
}
ASSERT (p->udata == 0);
}
-
- else
+ else if (sp->scoms_chain == (asymbol **) NULL)
{
if (write_map)
{