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libstdc++: Use strlen for std::char_traits<char8_t>::length [PR102958]

Message ID 20240801213927.388966-3-jwakely@redhat.com
State Committed
Commit fd7dabc116b9abc40ee6aa25bcc5d240b8cc516a
Headers
Series libstdc++: Use strlen for std::char_traits<char8_t>::length [PR102958] |

Checks

Context Check Description
linaro-tcwg-bot/tcwg_gcc_build--master-aarch64 success Build passed
linaro-tcwg-bot/tcwg_gcc_build--master-arm success Build passed

Commit Message

Jonathan Wakely Aug. 1, 2024, 9:32 p.m. UTC 
  Tested x86_64-linux.

-- >8 --

libstdc++-v3/ChangeLog:

	PR tree-optimization/102958
	* include/bits/char_traits.h (char_traits<char8_t>::length): Use
	strlen.
---
 libstdc++-v3/include/bits/char_traits.h | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
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Patch

diff --git a/libstdc++-v3/include/bits/char_traits.h b/libstdc++-v3/include/bits/char_traits.h
index 3074e9bb77e..ac3e43e34b9 100644
--- a/libstdc++-v3/include/bits/char_traits.h
+++ b/libstdc++-v3/include/bits/char_traits.h
@@ -651,10 +651,7 @@  _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	if (std::__is_constant_evaluated())
 	  return __gnu_cxx::char_traits<char_type>::length(__s);
 #endif
-	size_t __i = 0;
-	while (!eq(__s[__i], char_type()))
-	  ++__i;
-	return __i;
+	return __builtin_strlen((const char*)__s);
       }
 
       static _GLIBCXX17_CONSTEXPR const char_type*