https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86716
Bug ID: 86716
Summary: use of parameter outside function body before ‘++’
token
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: zhonghao at pku dot org.cn
Target Milestone: ---
The code is as follow:
#include <stdio.h>
int
f (int a, int b[a++], int c, int d[c++])
{
printf ("%d %d\n", a, c);
}
int
main (void)
{
int dummy[10];
f (1, dummy, 1, dummy);
return 0;
}
gcc rejects the code:
gcc code0.c.cpp
code0.c.cpp:3:18: error: use of parameter outside function body before '++'
token
f (int a, int b[a++], int c, int d[c++])
^~
code0.c.cpp:3:21: error: expected ')' before ',' token
f (int a, int b[a++], int c, int d[c++])
~ ^
)
code0.c.cpp:3:23: error: expected unqualified-id before 'int'
f (int a, int b[a++], int c, int d[c++])
^~~
clang accepts the code. The above code looks legal?
