[PATCH] c++: Avoid narrowing in make_char_string_pack

[Marek Polacek via Gcc-patches]

This fixes

gcc/cp/parser.c:4618:41: warning: narrowing conversion of '(char)(*(str + 
((sizetype)i)))' from 'char' to 'unsigned char' [-Wnarrowing]
 4618 |       unsigned char s[3] = { '\'', str[i], '\'' };
      |                                    ~~~~~^

Bootstrapped/regtested on x86_64-pc-linux-gnu, ok for trunk?

gcc/cp/ChangeLog:

        * parser.c (make_char_string_pack): Add a cast to const unsigned
        char *.
---
 gcc/cp/parser.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 44eed7ea638..56232ab029f 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -4607,7 +4607,8 @@ make_char_string_pack (tree value)
 {
   tree charvec;
   tree argpack = make_node (NONTYPE_ARGUMENT_PACK);
-  const char *str = TREE_STRING_POINTER (value);
+  const unsigned char *str
+    = (const unsigned char *) TREE_STRING_POINTER (value);
   int i, len = TREE_STRING_LENGTH (value) - 1;
   tree argvec = make_tree_vec (1);
 

base-commit: d7ca2a79b82c6500ead6ab983d14c609e2124eee
-- 
2.33.1