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* [Bug middle-end/23872] New: .t02.original dump weirdness
@ 2005-09-13 20:24 dann at godzilla dot ics dot uci dot edu
2005-09-13 20:28 ` [Bug c/23872] " pinskia at gcc dot gnu dot org
2005-09-13 20:45 ` dann at godzilla dot ics dot uci dot edu
0 siblings, 2 replies; 3+ messages in thread
From: dann at godzilla dot ics dot uci dot edu @ 2005-09-13 20:24 UTC (permalink / raw)
To: gcc-bugs
Using gcc -O2 -fdump-tree-all -S
to compile:
int bar (void) { return 0;}
int foo (int reject) { int result = 0; return result;}
the .t02.original dump looks like:
;; Function bar (bar)
;; enabled by -tree-original
{
return 0;
}
;; Function foo (foo)
;; enabled by -tree-original
{
int result = 0;
int result = 0; <--- this line appears twice...
return result;
}
If the order of the 2 functions is reversed in the file then the dump looks like:
;; Function foo (foo)
;; enabled by -tree-original
{
int result = 0;
<STATEMENT_LIST> <--- the return does not appear...
}
;; Function bar (bar)
;; enabled by -tree-original
{
return 0;
}
Using just -fdump-tree-original then the dump for "foo" always looks like the
second version.
--
Summary: .t02.original dump weirdness
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dann at godzilla dot ics dot uci dot edu
CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23872
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c/23872] .t02.original dump weirdness
2005-09-13 20:24 [Bug middle-end/23872] New: .t02.original dump weirdness dann at godzilla dot ics dot uci dot edu
@ 2005-09-13 20:28 ` pinskia at gcc dot gnu dot org
2005-09-13 20:45 ` dann at godzilla dot ics dot uci dot edu
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-13 20:28 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-13 20:28 -------
> int result = 0; <--- this line appears twice...
That is because there is DECL_EXPR there and you just don't see it.
This is all really a front-end issue.
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |minor
Component|middle-end |c
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23872
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c/23872] .t02.original dump weirdness
2005-09-13 20:24 [Bug middle-end/23872] New: .t02.original dump weirdness dann at godzilla dot ics dot uci dot edu
2005-09-13 20:28 ` [Bug c/23872] " pinskia at gcc dot gnu dot org
@ 2005-09-13 20:45 ` dann at godzilla dot ics dot uci dot edu
1 sibling, 0 replies; 3+ messages in thread
From: dann at godzilla dot ics dot uci dot edu @ 2005-09-13 20:45 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From dann at godzilla dot ics dot uci dot edu 2005-09-13 20:45 -------
The fact that the dump is different depending on function order or compilation
flags seems to point to either an uninitialized variable or some memory corruption.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23872
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2005-09-13 20:45 UTC | newest]
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2005-09-13 20:24 [Bug middle-end/23872] New: .t02.original dump weirdness dann at godzilla dot ics dot uci dot edu
2005-09-13 20:28 ` [Bug c/23872] " pinskia at gcc dot gnu dot org
2005-09-13 20:45 ` dann at godzilla dot ics dot uci dot edu
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