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From: "Paulo.Matos at csr dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/53917] Warning message line about variable points to place where variable doesn't occur Date: Tue, 10 Jul 2012 16:37:00 -0000 [thread overview] Message-ID: <bug-53917-4-dYtxdnNZS2@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-53917-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53917 --- Comment #1 from Paulo J. Matos <Paulo.Matos at csr dot com> 2012-07-10 16:37:20 UTC --- Here's another example: void fn1 (); typedef struct { int hdr[0]; } foo; typedef enum { READ_WRITE } bar; typedef struct { struct { foo t1; } mp; } foobar; bar fn2 (); typedef struct { foobar tag_mem_config; } tag; static int fn3 (foobar * p1) { int valid; if (p1->mp.t1.hdr[0]) valid = 0; else switch (fn2 ()) case 0: valid = 1; return valid; } void fn4 () { tag p_t1_rw_fsm_data; if (fn3 (&p_t1_rw_fsm_data.tag_mem_config)) fn1 (); } GCC says: test.c: In function 'fn4': test.c:38:8: warning: 'valid' may be used uninitialized in this function [-Wuninitialized] Again, line 38 is: if (fn3 (&p_t1_rw_fsm_data.tag_mem_config)) In this case this looks like it's related to inlining.
next prev parent reply other threads:[~2012-07-10 16:37 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-07-10 16:13 [Bug middle-end/53917] New: " Paulo.Matos at csr dot com 2012-07-10 16:37 ` Paulo.Matos at csr dot com [this message] 2012-07-10 16:38 ` [Bug middle-end/53917] " Paulo.Matos at csr dot com 2021-03-25 22:40 ` [Bug middle-end/53917] Wuninitialized warning " msebor at gcc dot gnu.org
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