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* [Bug c++/21113] New: Jumps into VLA or VM scope not rejected for C++
@ 2005-04-19 21:20 jsm28 at gcc dot gnu dot org
2005-04-19 21:57 ` [Bug c++/21113] " pinskia at gcc dot gnu dot org
2005-05-01 11:32 ` jsm28 at gcc dot gnu dot org
0 siblings, 2 replies; 3+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2005-04-19 21:20 UTC (permalink / raw)
To: gcc-bugs
Jumps into the scope of an identifier with variably modified type (with goto or
switch) are not rejected by the C++ front end. Bug 12913 describes this problem
for C, but there should be a separate bug for C++ since bug 16989 only depends
on the issue being fixed for C and not for C++. The examples in bug 12913 apply:
void f(int l) {
goto label;
int a[l];
label:;
}
void g (int l) {
switch (l) {
case 1:;
int a[l];
default:;
}
}
(and note that if we follow the C99 rules, which I think is the sensible thing
for the C++ front end to do, the same applies for identifiers of variably
modified type, e.g. int (*a)[l], not just VLAs: cases where the temporary
variable with the array size might not get initialized are all covered, not just
cases where memory for a VLA might not be allocated).
--
Summary: Jumps into VLA or VM scope not rejected for C++
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jsm28 at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21113
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2005-04-19 21:20 [Bug c++/21113] New: Jumps into VLA or VM scope not rejected for C++ jsm28 at gcc dot gnu dot org
2005-04-19 21:57 ` [Bug c++/21113] " pinskia at gcc dot gnu dot org
2005-05-01 11:32 ` jsm28 at gcc dot gnu dot org
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