From 3ce348af7f45f00d5acbdc4e1ef22c5f14724408 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Fri, 9 Jan 2015 10:40:42 +0800 Subject: [PATCH] gdb/compile/compile.c: Check return value of 'system' to avoid compiler warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Under Ubuntu 12, we need to check the return value of system(), or the compiler warns: gcc -g -O2 -I. -I../../binutils-gdb/gdb -I../../binutils-gdb/gdb/common -I../../binutils-gdb/gdb/config -DLOCALEDIR="\"/usr/local/share/locale\"" -DHAVE_CONFIG_H -I../../binutils-gdb/gdb/../include/opcode -I../../binutils-gdb/gdb/../opcodes/.. -I../../binutils-gdb/gdb/../readline/.. -I../bfd -I../../binutils-gdb/gdb/../bfd -I../../binutils-gdb/gdb/../include -I../libdecnumber -I../../binutils-gdb/gdb/../libdecnumber -I../../binutils-gdb/gdb/gnulib/import -Ibuild-gnulib/import -DTUI=1 -Wall -Wdeclaration-after-statement -Wpointer-arith -Wpointer-sign -Wno-unused -Wunused-value -Wunused-function -Wno-switch -Wno-char-subscripts -Wmissing-prototypes -Wdeclaration-after-statement -Wempty-body -Wmissing-parameter-type -Wold-style-declaration -Wold-style-definition -Wformat-nonliteral -Werror -c -o compile.o -MT compile.o -MMD -MP -MF .deps/compile.Tpo ../../binutils-gdb/gdb/compile/compile.c ../../binutils-gdb/gdb/compile/compile.c: In function ‘do_rmdir’: ../../binutils-gdb/gdb/compile/compile.c:175:10: error: ignoring return value of ‘system’, declared with attribute warn_unused_result [-Werror=unused-result] cc1: all warnings being treated as errors make[2]: *** [compile.o] Error 1 make[2]: Leaving directory `/upstream/build-binutils-s390/gdb' make[1]: *** [all-gdb] Error 2 make[1]: Leaving directory `/upstream/build-binutils-s390' make: *** [all] Error 2 Also, 'zap' is leaking. 2015-01-09 Chen Gang Pedro Alves * compile/compile.c: Include "gdb_wait.h". (do_rmdir): Check return value, and free 'zap'. --- gdb/compile/compile.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/gdb/compile/compile.c b/gdb/compile/compile.c index 1d18bd75dd..ccac49dd17 100644 --- a/gdb/compile/compile.c +++ b/gdb/compile/compile.c @@ -37,6 +37,7 @@ #include "filestuff.h" #include "target.h" #include "osabi.h" +#include "gdb_wait.h" @@ -169,10 +170,14 @@ do_rmdir (void *arg) { const char *dir = arg; char *zap; - + int wstat; + gdb_assert (strncmp (dir, TMP_PREFIX, strlen (TMP_PREFIX)) == 0); zap = concat ("rm -rf ", dir, (char *) NULL); - system (zap); + wstat = system (zap); + if (wstat == -1 || !WIFEXITED (wstat) || WEXITSTATUS (wstat) != 0) + warning (_("Could not remove temporary directory %s"), dir); + XDELETEVEC (zap); } /* Return the name of the temporary directory to use for .o files, and