[gdb/testsuite] Fix Wunused-result warning in until-reverse.c
authorTom de Vries <tdevries@suse.de>
Fri, 1 May 2020 09:04:22 +0000 (11:04 +0200)
committerTom de Vries <tdevries@suse.de>
Fri, 1 May 2020 09:04:22 +0000 (11:04 +0200)
commit53ae0aa9c65bc41b6f67f52a657b9f5339a331be
tree5a76921e945c7d9d4ccb5d10fa23877316e569b4
parenta2714d6cca1f1c7695f8dc84b49a4a51d1db86c8
[gdb/testsuite] Fix Wunused-result warning in until-reverse.c

When running test-case gdb.reverse/until-reverse.exp or
gdb.reverse/until-precsave.exp with gcc-10, we run into a Wunused-result
warning:
...
gdb compile failed, gdb.reverse/until-reverse.c: In function 'main':
gdb.reverse/until-reverse.c:40:14: warning: ignoring return value of \
  'malloc' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |       (void) malloc (1);
      |              ^~~~~~~~~~
...

Fix this by using the result of malloc as argument to a free call.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2020-05-01  Tom de Vries  <tdevries@suse.de>

* gdb.reverse/until-reverse.c (main): Fix Wunused-result warning.
gdb/testsuite/ChangeLog
gdb/testsuite/gdb.reverse/until-reverse.c