Compile the source code pasted below with "-Os -Wuninitialized" using C++. You
should get the
following warnings:
uninit.cpp: In function 'int foo()':
uninit.cpp:13: warning: 'range$begin' is used uninitialized in this function
uninit.cpp: In function 'int bar()':
uninit.cpp:21: warning: 'range$end' may be used uninitialized in this function
where the '.' has been secretly replaced by '$'. This used to be a problem
with C and ObjC in the past
also, but appears fixed now.
============ uninit.cpp ==================
/* Contributed by Ziemowit Laski <[EMAIL PROTECTED]> */
/* Check that unused warnings triggered by the optimizer contain '.' rather
than '$' in them. */
/* { dg-do compile } */
/* { dg-options "-Os -Wuninitialized" } */
typedef struct Range {
long begin, end;
} Range;
int foo(void) {
Range range;
while(range.begin != 0) { } /* { dg-warning ".range\\.begin. is used
uninitialized in this function" } */
return 0;
}
extern int baz(void);
int bar(void) {
Range range; /* { dg-warning ".range\\.end. may be used uninitialized in
this function" } */
do {
if(baz()) range.end = 2;
}
while(range.end != 0);
return 0;
}
--
Summary: Spurious '$' in warning messages
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: zlaski at apple dot com
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21349
