[gcc r13-2153] New uninit testcase
Richard Biener
rguenth@gcc.gnu.org
Tue Aug 23 12:31:30 GMT 2022
https://gcc.gnu.org/g:fcd9671e73c877d0bd8a2c0a16cf7cf2ce93fe60
commit r13-2153-gfcd9671e73c877d0bd8a2c0a16cf7cf2ce93fe60
Author: Richard Biener <rguenther@suse.de>
Date: Tue Aug 23 14:30:05 2022 +0200
New uninit testcase
I've reduced the following which doesn't seem covered in a good enough
way in the testsuite.
* gcc.dg/uninit-pred-10.c: New testcase.
Diff:
---
gcc/testsuite/gcc.dg/uninit-pred-10.c | 36 +++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/gcc/testsuite/gcc.dg/uninit-pred-10.c b/gcc/testsuite/gcc.dg/uninit-pred-10.c
new file mode 100644
index 00000000000..468b4d3ad4b
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/uninit-pred-10.c
@@ -0,0 +1,36 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wuninitialized" } */
+
+enum demangle_component_type {
+ DEMANGLE_COMPONENT_NAME,
+ DEMANGLE_COMPONENT_REFERENCE
+};
+struct demangle_component {
+ enum demangle_component_type type;
+} d_print_comp_inner_mod_inner, *d_print_comp_inner_dc;
+struct d_print_mod {
+ struct d_print_mod *next;
+};
+struct d_print_info {
+ int templates;
+ struct d_print_mod *modifiers;
+};
+void d_print_comp_inner(struct d_print_info *dpi)
+{
+ int saved_templates, need_template_restore = 0;
+ switch (d_print_comp_inner_dc->type) {
+ case DEMANGLE_COMPONENT_NAME:
+ goto modifier;
+ case DEMANGLE_COMPONENT_REFERENCE:
+ saved_templates = dpi->templates;
+ need_template_restore = 1;
+ modifier:
+ struct d_print_mod dpm;
+ dpm.next = dpi->modifiers;
+ d_print_comp_inner_mod_inner = *d_print_comp_inner_dc;
+ d_print_comp_inner(dpi);
+ dpi->modifiers = dpm.next;
+ if (need_template_restore)
+ dpi->templates = saved_templates; /* { dg-bogus "uninitialized" } */
+ }
+}
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