[gcc r12-2341] analyzer: fix const-correctness of various is_a_helper

[gcc r12-2341] analyzer: fix const-correctness of various is_a_helper

[David Malcolm]

https://gcc.gnu.org/g:c031ea2782a1873eee5ba82fb114cd87ff831412

commit r12-2341-gc031ea2782a1873eee5ba82fb114cd87ff831412
Author: David Malcolm <dmalcolm@redhat.com>
Date:   Thu Jul 15 19:33:07 2021 -0400

    analyzer: fix const-correctness of various is_a_helper
    
    gcc/analyzer/ChangeLog:
            * svalue.h (is_a_helper <placeholder_svalue *>::test): Make
            param and template param const.
            (is_a_helper <widening_svalue *>::test): Likewise.
            (is_a_helper <compound_svalue *>::test): Likewise.
            (is_a_helper <conjured_svalue *>::test): Likewise.
    
    Signed-off-by: David Malcolm <dmalcolm@redhat.com>

Diff:
---
 gcc/analyzer/svalue.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/gcc/analyzer/svalue.h b/gcc/analyzer/svalue.h
index 54b97f8617f..20d7cf8f751 100644
--- a/gcc/analyzer/svalue.h
+++ b/gcc/analyzer/svalue.h
@@ -1063,7 +1063,7 @@ public:
 template <>
 template <>
 inline bool
-is_a_helper <placeholder_svalue *>::test (svalue *sval)
+is_a_helper <const placeholder_svalue *>::test (const svalue *sval)
 {
   return sval->get_kind () == SK_PLACEHOLDER;
 }
@@ -1165,7 +1165,7 @@ public:
 template <>
 template <>
 inline bool
-is_a_helper <widening_svalue *>::test (svalue *sval)
+is_a_helper <const widening_svalue *>::test (const svalue *sval)
 {
   return sval->get_kind () == SK_WIDENING;
 }
@@ -1266,7 +1266,7 @@ public:
 template <>
 template <>
 inline bool
-is_a_helper <compound_svalue *>::test (svalue *sval)
+is_a_helper <const compound_svalue *>::test (const svalue *sval)
 {
   return sval->get_kind () == SK_COMPOUND;
 }
@@ -1366,7 +1366,7 @@ public:
 template <>
 template <>
 inline bool
-is_a_helper <conjured_svalue *>::test (svalue *sval)
+is_a_helper <const conjured_svalue *>::test (const svalue *sval)
 {
   return sval->get_kind () == SK_CONJURED;
 }