Bug ID: 16264
Summary: support DW_AT_main_subprogram
Assignee: unassigned at sourceware dot org
Reporter: tromey at redhat dot com
Author: Tom Tromey <[hidden email]>
Date: Sun Nov 13 20:56:34 2016 -0700
PR symtab/16264 - support DW_AT_main_subprogram
This patch adds support for DW_AT_main_subprogram.
This is PR symtab/16264.
DW_AT_main_subprogram is used to mark a program's entry point. GCC
can emit this, and I hope to change the Rust compiler to emit it as
GDB already supports an older, pre-DWARF 4 convention adopted by
FORTRAN compilers, namely to emit DW_AT_calling_convention for the
"main" function. However, I think this support in GDB had a small
bug, in that it seems to rely on the DW_AT_name being read before
DW_AT_calling_convention. This patch fixes this as well.
Built and regtested on x86-64 Fedora 24 and the buildbot. New test