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[committed] libstdc++: Avoid -Wmaybe-uninitialized warnings in text_encoding.cc

Message ID 20240118125459.100962-1-jwakely@redhat.com
State New
Headers show
Series [committed] libstdc++: Avoid -Wmaybe-uninitialized warnings in text_encoding.cc | expand

Commit Message

Jonathan Wakely Jan. 18, 2024, 12:54 p.m. UTC 
Tested x86_64-linux. Pushed to trunk.

-- >8 --

These variables are only read from if we haven't reached the end of
either range, in which case they're guaranteed to be initialized to the
next alphanumeric character. But we can just initialize them to make the
compiler happy.

libstdc++-v3/ChangeLog:

	* include/bits/unicode.h (__charset_alias_match): Initialize
	__var_a and __var_b.
---
 libstdc++-v3/include/bits/unicode.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/libstdc++-v3/include/bits/unicode.h b/libstdc++-v3/include/bits/unicode.h
index d025d21f3dd..51bf02e927f 100644
--- a/libstdc++-v3/include/bits/unicode.h
+++ b/libstdc++-v3/include/bits/unicode.h
@@ -1084,7 +1084,7 @@  inline namespace __v15_1_0
     while (true)
       {
 	// Find the value of the next alphanumeric character in each string.
-	unsigned char __val_a, __val_b;
+	unsigned char __val_a{}, __val_b{};
 	while (__ptr_a != __end_a
 		 && (__val_a = __map(*__ptr_a, __num_a)) == 127)
 	  ++__ptr_a;