From: nobu@... Date: 2018-12-09T02:32:33+00:00 Subject: [ruby-core:90382] [Ruby trunk Bug#15299] hash.c: warning: ‘bin’ may be used uninitialized in this function Issue #15299 has been updated by nobu (Nobuyoshi Nakada). What version of cc? It is a false warning. `bin` is initialized if the hash is not empty, and otherwise `existing` is `FALSE`. And the line is in a block of `if (existing)`, so unintialized `bin` never reaches there. ---------------------------------------- Bug #15299: hash.c: warning: ���bin��� may be used uninitialized in this function https://bugs.ruby-lang.org/issues/15299#change-75502 * Author: duerst (Martin D��rst) * Status: Open * Priority: Normal * Assignee: nobu (Nobuyoshi Nakada) * Target version: * ruby -v: ruby 2.4.0dev (2016-06-09 trunk 55334) [x86_64-linux] * Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN ---------------------------------------- When compiling the latest version of trunk, I get some warnings in hash.c, as follows: ``` compiling hash.c hash.c: In function ���linear_update���: hash.c:849:24: warning: ���bin��� may be used uninitialized in this function [-Wmaybe-uninitialized] clear_entry(RHASH_ARRAY_REF(hash, bin)); ^ hash.c: In function ���rb_hash_stlike_update���: hash.c:849:24: warning: ���bin��� may be used uninitialized in this function [-Wmaybe-uninitialized] hash.c:811:14: note: ���bin��� was declared here unsigned bin; ^ ``` This warning appeared already when I reported issue #15279, but I didn't mention it because I hoped it would also disappear when #15279 was fixed. -- https://bugs.ruby-lang.org/ Unsubscribe: