http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51515
Bug #: 51515
Summary: Unable to forward declare nested functions
Classification: Unclassified
Product: gcc
Version: 4.6.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: [email protected]
ReportedBy: [email protected]
Attempting to forward-declare a nested function results in a compiler error.
This used to work in gcc-3.4.
eg
void f()
{
void g(void);
g();
void g() {}
}
compiling this produces the following errors:
cc -c -o tfn.o tfn.c
tfn.c: In function ‘f’:
tfn.c:5: error: static declaration of ‘g’ follows non-static declaration
tfn.c:3: note: previous declaration of ‘g’ was here
applying 'static' to the function declaration or definition, which is what the
error message might suggest the compiler wants, produces:
void f()
{
static void g(void);
g();
static void g(){};
}
cc -c -o tfn.o tfn.c
tfn.c: In function ‘f’:
tfn.c:3: error: invalid storage class for function ‘g’
tfn.c:5: error: invalid storage class for function ‘g’
tfn.c:5: warning: conflicting types for ‘g’
tfn.c:5: error: static declaration of ‘g’ follows non-static declaration
tfn.c:4: note: previous implicit declaration of ‘g’ was here
