71e1b6b0ac
A number of testcases define variables and/or functions which are referenced by GDB during the test, but which are not referenced from within the test executable. Clang correctly recognizes that these variables and functions are unused, and optimizes them out, causing the testcases in question to fail. This commit adds __attribute__ ((used)) in various places to prevent this. gdb/testsuite/ChangeLog: * gdb.base/msym-bp.c (foo): Add __attribute__ ((used)). * gdb.base/msym-bp-2.c (foo): Likewise. * gdb.base/msym-lang.c (foo): Likewise. * gdb.base/msym-lang-main.c (foo): Likewise. * gdb.base/symtab-search-order-1.c (static_global): Likewise. * gdb.guile/scm-pretty-print.c (eval_func): Likewise. * gdb.mi/mi-sym-info-1.c (global_f1): Likewise. * gdb.mi/mi-sym-info-2.c (global_f1, var1, var2): Likewise. * gdb.multi/watchpoint-multi-exit.c (globalvar): Likewise. * gdb.python/py-as-string.c (enum_valid, enum_invalid): Likewise. * gdb.python/py-objfile.c (static_var): Likewise. * gdb.python/py-symbol.c (rr): Likewise. * gdb.python/py-symbol-2.c (anon, rr): Likewise. * gdb.mi/mi-sym-info.exp (lineno1, lineno2): Updated.
83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2010-2020 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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#ifdef __cplusplus
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class SimpleClass
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{
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private:
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int i;
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public:
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void seti (int arg)
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{
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i = arg;
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}
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int valueofi (void)
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{
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return i; /* Break in class. */
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}
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};
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namespace {
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int __attribute__ ((used)) anon = 10;
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};
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#endif
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#ifdef USE_TWO_FILES
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extern void function_in_other_file (void);
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#endif
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int qq = 72; /* line of qq */
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static int __attribute__ ((used)) rr = 42; /* line of rr */
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int func (int arg)
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{
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int i = 2;
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i = i * arg; /* Block break here. */
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return arg;
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}
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struct simple_struct
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{
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int a;
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};
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int main (int argc, char *argv[])
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{
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#ifdef __cplusplus
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SimpleClass sclass;
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#endif
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int a = 0;
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int result;
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struct simple_struct ss = { 10 };
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enum tag {one, two, three};
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enum tag t = one;
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result = func (42);
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#ifdef __cplusplus
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sclass.seti (42);
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sclass.valueofi ();
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#endif
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#ifdef USE_TWO_FILES
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function_in_other_file ();
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#endif
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return 0; /* Break at end. */
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}
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