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authorTom Tromey <tromey@redhat.com>2013-08-07 20:03:52 +0000
committerTom Tromey <tromey@redhat.com>2013-08-07 20:03:52 +0000
commitbf6d8a91eac025c21b03d604bdb2e4b901c4c6bc (patch)
tree1917c00119029aac713cbfef834ba7ee6966ec18 /gdb/symtab.h
parentf9125b6c6c523dc3f0191fdb5b9551c6f5d70c61 (diff)
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use language of the main symbol
With "dwz -m", "main" appears in both the PU and the importing CU when running anon-struct.exp. However, the PU does not have a file name. So, find_main_filename returns the empty string, making deduce_language_from_filename return language_unknown. This patch fixes this problem by changing gdb to use the ordinary symbol-lookup functions to find "main"'s symbol. Then, it examines the symbol's language. I think this is cleaner than the current approach. For one thing it avoids trying to guess the language based on the source file name, instead deferring to the presumably more reliable debuginfo. Another possible fix would have been to change how the file name is found via the "qf" methods. However, I think the approach given is preferable for the reason outlined above. This required a minor test suite change, as now a symtab is expanded during the search for "main". Built and regtested (both ways) on x86-64 Fedora 18. * symfile.c (set_initial_language): Look up "main" symbol and use its language. * symtab.c (find_main_filename): Remove. * symtab.h (find_main_filename): Remove. * gdb.base/maint.exp: Allow zero symtabs to be expanded.
Diffstat (limited to 'gdb/symtab.h')
-rw-r--r--gdb/symtab.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/gdb/symtab.h b/gdb/symtab.h
index 6d81507..ccf4a4f 100644
--- a/gdb/symtab.h
+++ b/gdb/symtab.h
@@ -1252,8 +1252,6 @@ extern VEC (char_ptr) *make_source_files_completion_list (const char *,
int matching_obj_sections (struct obj_section *, struct obj_section *);
-extern const char *find_main_filename (void);
-
extern struct symtab *find_line_symtab (struct symtab *, int, int *, int *);
extern struct symtab_and_line find_function_start_sal (struct symbol *sym,