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6df97c56ea
Starting with (future) Clang 15 (since https://reviews.llvm.org/D120989), Clang emits the DWARF information of global alias variables as DW_TAG_imported_declaration. However, GDB does not handle it. It incorrectly always reads this tag as C++/Fortran imported declaration (type alias, namespace alias and Fortran module). This commit adds support to handle this tag as an alias variable. This change fixes the failures in the gdb.base/symbol-alias.exp testcase with current git Clang. This testcase is also updated to test nested (recursive) aliases.
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/* This test is part of GDB, the GNU debugger.
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Copyright 2017-2022 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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struct S
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{
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int field1;
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int field2;
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};
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struct S g_var_s = { 1, 2 };
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static int g_var = 1;
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#ifdef __cplusplus
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/* So that the alias attribute below work without having to figure out
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this function's mangled name. */
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static struct S *func (void) asm ("func");
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#endif
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static struct S *
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func (void)
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{
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return &g_var_s;
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}
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struct S *func_alias (void) __attribute__ ((alias ("func")));
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extern struct S g_var_s_alias __attribute__ ((alias ("g_var_s")));
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extern struct S g_var_s_alias2 __attribute__ ((alias ("g_var_s_alias")));
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extern int g_var_alias __attribute__ ((alias ("g_var")));
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extern int g_def_var_alias __attribute__ ((alias ("g_def_var")));
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int g_def_var = 2;
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extern int g_def_var_alias2 __attribute__ ((alias ("g_def_var_alias")));
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