From 655e4e52ef44c1670a3b6f979b85534279c9f6c1 Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Thu, 17 Aug 2023 08:08:42 -0600 Subject: Avoid crash with Ada and -fdata-sections A user noticed that gdb would crash when showing a backtrace. Investigation showed this to be a crash in the DWARF reader when handling a "pragma export" symbol. The bug here is that earlier code decides to eliminate the symbol, but the export code tries to add it anyway -- but to a NULL list. --- gdb/dwarf2/read.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'gdb/dwarf2/read.c') diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c index a538cb5..ef7f570 100644 --- a/gdb/dwarf2/read.c +++ b/gdb/dwarf2/read.c @@ -19203,7 +19203,8 @@ new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, else list_to_add = cu->list_in_scope; - if (is_ada_import_or_export (cu, name, linkagename)) + if (list_to_add != nullptr + && is_ada_import_or_export (cu, name, linkagename)) { /* This is a Pragma Export. A Pragma Import won't be seen here, because it will not have a location -- cgit v1.1