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kconfig: Avoid format overflow warning from GCC 8.1
In file included from scripts/kconfig/zconf.tab.c:2485: scripts/kconfig/confdata.c: In function ‘conf_write’: scripts/kconfig/confdata.c:773:22: warning: ‘%s’ directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=] sprintf(newname, "%s%s", dirname, basename); ^~ scripts/kconfig/confdata.c:773:19: note: assuming directive output of 7 bytes sprintf(newname, "%s%s", dirname, basename); ^~~~~~ scripts/kconfig/confdata.c:773:2: note: ‘sprintf’ output 1 or more bytes (assuming 4104) into a destination of size 4097 sprintf(newname, "%s%s", dirname, basename); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ scripts/kconfig/confdata.c:776:23: warning: ‘.tmpconfig.’ directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=] sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); ^~~~~~~~~~~ scripts/kconfig/confdata.c:776:3: note: ‘sprintf’ output between 13 and 4119 bytes into a destination of size 4097 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Increase the size of tmpname and newname to make GCC happy. Change-Id: Ie3a8689e3982734be63d15e1ad98416ab13d4b48 Cc: stable@vger.kernel.org Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Kevin F. Haggerty <haggertk@lineageos.org>
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@ -679,7 +679,7 @@ int conf_write(const char *name)
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struct menu *menu;
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const char *basename;
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const char *str;
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char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
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char dirname[PATH_MAX+1], tmpname[PATH_MAX+22], newname[PATH_MAX+8];
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char *env;
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dirname[0] = 0;
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