From: Pekka Seppänen <pexu@gcc.mail.kapsi.fi>
Date: Wed, 20 Sep 2023 18:41:01 +0000 (+0100)
Subject: aarch64: Ensure const and sign correctness
X-Git-Tag: basepoints/gcc-15~5956
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0a59ff65df6da8267efb5c97dead8cd0dcd5b445;p=thirdparty%2Fgcc.git

aarch64: Ensure const and sign correctness

Be const and sign correct by using a matching CIE augmentation type.
Use a builtin instead of relying <string.h> being included.

libgcc/ChangeLog:

	* config/aarch64/aarch64-unwind.h (aarch64_cie_signed_with_b_key):
	Use const unsigned type and a builtin.

Signed-off-by: Pekka Seppänen <pexu@gcc.mail.kapsi.fi>
---

diff --git a/libgcc/config/aarch64/aarch64-unwind.h b/libgcc/config/aarch64/aarch64-unwind.h
index 3ad2f8239ed8..d669edd671b4 100644
--- a/libgcc/config/aarch64/aarch64-unwind.h
+++ b/libgcc/config/aarch64/aarch64-unwind.h
@@ -40,8 +40,9 @@ aarch64_cie_signed_with_b_key (struct _Unwind_Context *context)
       const struct dwarf_cie *cie = get_cie (fde);
       if (cie != NULL)
 	{
-	  char *aug_str = cie->augmentation;
-	  return strchr (aug_str, 'B') == NULL ? 0 : 1;
+	  const unsigned char *aug_str = cie->augmentation;
+	  return __builtin_strchr ((const char *) aug_str,
+				   'B') == NULL ? 0 : 1;
 	}
     }
   return 0;