[PATCH v2] PowerPC: Skip base type RTTI tests before inferior start

Abhay Kandpal
2025-11-25T06:53:17Z

On PowerPC targets, RTTI typeinfo objects for simple base types such as
`int`, `char*`, and `const char*` may not be emitted until the inferior
has been started. As a result, the `gdb.cp/typeid.exp` test fails when
checking typeid results before program execution begins.

This patch extends the existing Clang-specific logic that skips base type
RTTI checks before the inferior starts, to also apply on PowerPC. This
ensures consistent test behavior across compilers and targets.

gdb/testsuite/
* gdb.cp/typeid.exp (do_typeid_tests): Skip base type RTTI tests
before inferior start on PowerPC.
---
This patch is reg tested.
Change from v1 -> v2
<Change the logic to skip base type RTTI test>
<Modified commit log>

gdb/testsuite/gdb.cp/typeid.exp | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/gdb/testsuite/gdb.cp/typeid.exp b/gdb/testsuite/gdb.cp/typeid.exp
index bd97b26c6e4..cce6a294dd5 100644
--- a/gdb/testsuite/gdb.cp/typeid.exp
+++ b/gdb/testsuite/gdb.cp/typeid.exp
@@ -28,14 +28,24 @@ proc do_typeid_tests {started} {
set type_re "(std::type_info|gdb_gnu_v3_type_info)"

set var {ca b}
- if {$started || ![test_compiler_info clang-*-* c++]} {
- # Clang doesn't place type information for the base types in
- # the executable, and relies on this being linked in from the
- # standard library. As a result, type information for these
- # variables is only available once the inferior is started.
+ set have_base_types 1
+ if {!$started} {
+ if {[test_compiler_info clang-*-* c++]} {
+ # Note that we test pointer equality rather than object
+ # Clang doesn't place type information for the base types in
+ # the executable, and relies on this being linked in from the
+ # standard library. As a result, type information for these
+ # variables is only available once the inferior is started.
+ set have_base_types 0
+ } elseif {[istarget "powerpc*-*-*"]} {
+ # On PowerPC, RTTI typeinfo for base types (i, cp, ccp) may not be
+ # emitted until the inferior is started.
+ set have_base_types 0
+ }
+ }
+ if { $have_base_types } {
lappend var i cp ccp
}
-
foreach simple_var $var {
gdb_test "print &typeid($simple_var)" \
" = \\($type_re \\*\\) $hex.*"
--
2.51.1