From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.dg/uninit-4-O0.c | 52 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/uninit-4-O0.c (limited to 'gcc/testsuite/gcc.dg/uninit-4-O0.c') diff --git a/gcc/testsuite/gcc.dg/uninit-4-O0.c b/gcc/testsuite/gcc.dg/uninit-4-O0.c new file mode 100644 index 000000000..0b9aeea7d --- /dev/null +++ b/gcc/testsuite/gcc.dg/uninit-4-O0.c @@ -0,0 +1,52 @@ +/* Spurious uninit variable warnings, case 4. + Simplified version of cppexp.c (cpp_parse_expr). + + This one is really fragile, it gets it right if you take out case + 1, or if the structure is replaced by an int, or if the structure + has fewer members (!) */ + +/* { dg-do compile } */ +/* { dg-options "-Wuninitialized" } */ + +extern void abort (void); + +struct operation { + short op; + char rprio; + char flags; + char unsignedp; + long value; +}; + +extern struct operation cpp_lex (void); + +void +cpp_parse_expr (void) +{ + int rprio; /* { dg-bogus "rprio" "uninitialized variable warning PR19833" } */ + struct operation op; + + for (;;) + { + op = cpp_lex (); + + switch (op.op) + { + case 0: + break; + case 1: + return; + case 2: + rprio = 1; + break; + default: + return; + } + + if (op.op == 0) + return; + + if (rprio != 1) + abort(); + } +} -- cgit v1.2.3