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info functions bug?
- From: Andrew STUBBS <andrew dot stubbs at st dot com>
- To: GDB List <gdb at sourceware dot org>
- Date: Tue, 21 Aug 2007 12:31:53 +0100
- Subject: info functions bug?
Hi,
There seems to be a problem with 'info functions'. It prints the return
type of template functions twice.
Here's some example code:
template <typename TT>
TT& max(TT& a, TT& b)
{
return (a>b ? a : b);
}
int
main()
{
int a = 1, b = 2;
float c = 1.1, d = 2.2;
max(a,b);
max(c,d);
return 0;
}
This is correctly interpreted by nm and c++filt as follows:
$ nm -C a.out | grep max
88001878 W float& max<float>(float&, float&)
88001830 W int& max<int>(int&, int&)
But GDB gives a slightly different name:
(gdb) info functions max
All functions matching regular expression "max":
File t.cpp:
float &float& max<float>(float&, float&);
int &int& max<int>(int&, int&);
This name is not accepted when setting a breakpoint, but remove the
extra return type and all is well:
(gdb) b float &float& max<float>(float&, float&)
Function "float &float& max<float>(float&, float&)" not defined.
(gdb) b float& max<float>(float&, float&)
Breakpoint 2 at 0x8800188a: file t.cpp, line 4.
(Irritatingly, 'break max' doesn't work - it doesn't even prompt.)
Presumably this is not the intended output for this type of function?
Andrew