From 66c168ae56fa2d67f821ccae774fd25c695fd9ce Mon Sep 17 00:00:00 2001 From: Joel Brobecker Date: Mon, 2 Feb 2015 07:20:58 +0400 Subject: [PATCH] [Ada] pspace_data->sym_cache is always NULL The Ada symbol cache has been designed to have one instance of that of that cache per program space, and for each instance to be created on-demand. ada_get_symbol_cache is the function responsible for both lookup and creation on demand. Unfortunately, ada_get_symbol_cache forgot to store the reference to newly created caches, thus causing it to: - Leak old caches; - Allocate a new cache each time the cache is being searched or a new entry is to be inserted. This patch fixes the issue by avoiding the use of the local variable, which indirectly allowed the bug to happen. We manipulate the reference in the program-space data instead. gdb/ChangeLog: PR gdb/17854: * ada-lang.c (ada_get_symbol_cache): Set pspace_data->sym_cache when allocating a new one. --- gdb/ChangeLog | 6 ++++++ gdb/ada-lang.c | 9 ++++----- 2 files changed, 10 insertions(+), 5 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 6f2f475..e11ff78 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +2015-02-02 Joel Brobecker + + PR gdb/17854: + * ada-lang.c (ada_get_symbol_cache): Set pspace_data->sym_cache + when allocating a new one. + 2015-02-01 Tom Tromey * MAINTAINERS: Remove myself. diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c index f4f5bf3..921aed5 100644 --- a/gdb/ada-lang.c +++ b/gdb/ada-lang.c @@ -4404,15 +4404,14 @@ static struct ada_symbol_cache * ada_get_symbol_cache (struct program_space *pspace) { struct ada_pspace_data *pspace_data = get_ada_pspace_data (pspace); - struct ada_symbol_cache *sym_cache = pspace_data->sym_cache; - if (sym_cache == NULL) + if (pspace_data->sym_cache == NULL) { - sym_cache = XCNEW (struct ada_symbol_cache); - ada_init_symbol_cache (sym_cache); + pspace_data->sym_cache = XCNEW (struct ada_symbol_cache); + ada_init_symbol_cache (pspace_data->sym_cache); } - return sym_cache; + return pspace_data->sym_cache; } /* Clear all entries from the symbol cache. */ -- 2.7.4