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Search global symbols from the expression's block objfile first.

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gdb/ChangeLog:

        * findvar.c (default_read_var_value): For LOC_UNRESOLVED symbols,
        try locating the symbol in the symbol's own objfile first, before
        extending the search to all objfiles.
        * symtab.c (lookup_symbol_aux_objfile): New function, extracted
        out of lookup_symbol_aux_symtabs.
        (lookup_symbol_aux_symtabs): Add new parameter "exclude_objfile".
        Replace extracted-out code by call to lookup_symbol_aux_objfile.
        Do not search EXCLUDE_OBJFILE.
        (lookup_static_symbol_aux): Update call to lookup_symbol_aux_symtabs.
        (lookup_symbol_global): Search for matches in the block's objfile
        first, before searching all other objfiles.
This commit is contained in:
Joel Brobecker
2012-05-10 16:24:40 +00:00
parent 0ece64fd6f
commit 99a547d679
3 changed files with 99 additions and 33 deletions
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10
gdb/findvar.c
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@@ -562,7 +562,15 @@ default_read_var_value (struct symbol *var, struct frame_info *frame)
struct minimal_symbol *msym;
struct obj_section *obj_section;
msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (var), NULL, NULL);
/* First, try locating the associated minimal symbol within
the same objfile. This prevents us from selecting another
symbol with the same name but located in a different objfile. */
msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (var), NULL,
SYMBOL_SYMTAB (var)->objfile);
/* If the lookup failed, try expanding the search to all
objfiles. */
if (msym == NULL)
msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (var), NULL, NULL);
if (msym == NULL)
error (_("No global symbol \"%s\"."), SYMBOL_LINKAGE_NAME (var));
if (overlay_debugging)