http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60815
Bug ID: 60815
Summary: Inconsistent prologue line table location
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: dblaikie at gmail dot com
CC: ccoutant at gcc dot gnu.org, echristo at gmail dot com
Host: x86_64
Target: x86_64
Given:
template<typename T>
void func() // prologue
{
}
template void func<int>();
void f2()
{ // prologue
}
struct foo {
void f3() // GCC prologue
{
}
void f4();
};
void (foo::*x)() = &foo::f3;
void foo::f4()
{ // prologue
}
GCC's line table shows the prologue of both of these functions as the line of
the function name, not the opening '{'. Yet if these functions are
non-templates or out-of-line, the prologue starts at the opening brace, not the
function name.
(backstory: Clang consistently uses the opening brace but fails some GDB tests
that rely on GCC's behavior, even though it's inconsistent (see
gdb.cp/cpexprs.exp for some examples). It'd be great if both GCC and Clang
could agree on this, one way or another, but if not, the GDB tests can of
course be made resilient to the difference by simply putting the '{' on the
same line as the function name)
