| Message ID | 1406816503-31963-1-git-send-email-hdegoede@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hello Hans, On 31-07-14 16:21, Hans de Goede wrote: > This fixes the following compiler warning: > > In file included from scripts/kconfig/zconf.tab.c:2537:0: > scripts/kconfig/menu.c: In function ‘get_symbol_str’: > scripts/kconfig/menu.c:590:18: warning: ‘jump’ may be used uninitialized in this function [-Wmaybe-uninitialized] > jump->offset = strlen(r->s); > ^ > In file included from scripts/kconfig/zconf.tab.c:2537:0: > scripts/kconfig/menu.c:551:19: note: ‘jump’ was declared here > struct jump_key *jump; > > Signed-off-by: Hans de Goede <hdegoede@redhat.com> > --- > scripts/kconfig/menu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c > index a26cc5d..584e0fc 100644 > --- a/scripts/kconfig/menu.c > +++ b/scripts/kconfig/menu.c > @@ -548,7 +548,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop, > { > int i, j; > struct menu *submenu[8], *menu, *location = NULL; > - struct jump_key *jump; > + struct jump_key *jump = NULL; > > str_printf(r, _("Prompt: %s\n"), _(prop->text)); > menu = prop->menu->parent; just curious, which compiler is this? Since it is a false positive. (and it could know) Regards, Jeroen -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, On 07/31/2014 10:10 PM, Jeroen Hofstee wrote: > Hello Hans, > > On 31-07-14 16:21, Hans de Goede wrote: >> This fixes the following compiler warning: >> >> In file included from scripts/kconfig/zconf.tab.c:2537:0: >> scripts/kconfig/menu.c: In function ‘get_symbol_str’: >> scripts/kconfig/menu.c:590:18: warning: ‘jump’ may be used uninitialized in this function [-Wmaybe-uninitialized] >> jump->offset = strlen(r->s); >> ^ >> In file included from scripts/kconfig/zconf.tab.c:2537:0: >> scripts/kconfig/menu.c:551:19: note: ‘jump’ was declared here >> struct jump_key *jump; >> >> Signed-off-by: Hans de Goede <hdegoede@redhat.com> >> --- >> scripts/kconfig/menu.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c >> index a26cc5d..584e0fc 100644 >> --- a/scripts/kconfig/menu.c >> +++ b/scripts/kconfig/menu.c >> @@ -548,7 +548,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop, >> { >> int i, j; >> struct menu *submenu[8], *menu, *location = NULL; >> - struct jump_key *jump; >> + struct jump_key *jump = NULL; >> str_printf(r, _("Prompt: %s\n"), _(prop->text)); >> menu = prop->menu->parent; > > just curious, which compiler is this? Since it is a false positive. > (and it could know) [hans@shalem u-boot]$ rpm -q gcc gcc-4.9.1-2.fc21.1.x86_64 Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hello Hans, On 31-07-14 16:21, Hans de Goede wrote: > This fixes the following compiler warning: > > In file included from scripts/kconfig/zconf.tab.c:2537:0: > scripts/kconfig/menu.c: In function ‘get_symbol_str’: > scripts/kconfig/menu.c:590:18: warning: ‘jump’ may be used uninitialized in this function [-Wmaybe-uninitialized] > jump->offset = strlen(r->s); > ^ > In file included from scripts/kconfig/zconf.tab.c:2537:0: > scripts/kconfig/menu.c:551:19: note: ‘jump’ was declared here > struct jump_key *jump; > > Signed-off-by: Hans de Goede <hdegoede@redhat.com> > --- > scripts/kconfig/menu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c > index a26cc5d..584e0fc 100644 > --- a/scripts/kconfig/menu.c > +++ b/scripts/kconfig/menu.c > @@ -548,7 +548,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop, > { > int i, j; > struct menu *submenu[8], *menu, *location = NULL; > - struct jump_key *jump; > + struct jump_key *jump = NULL; > > str_printf(r, _("Prompt: %s\n"), _(prop->text)); > menu = prop->menu->parent; And if you combine head && location into a single boolean, does this warning still occur? Not that it matters that much in this case, since it is a host tool, but I guess the compiler does intend to assign NULL while there is no reason to do so. Regards, Jeroen -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c index a26cc5d..584e0fc 100644 --- a/scripts/kconfig/menu.c +++ b/scripts/kconfig/menu.c @@ -548,7 +548,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop, { int i, j; struct menu *submenu[8], *menu, *location = NULL; - struct jump_key *jump; + struct jump_key *jump = NULL; str_printf(r, _("Prompt: %s\n"), _(prop->text)); menu = prop->menu->parent;
This fixes the following compiler warning: In file included from scripts/kconfig/zconf.tab.c:2537:0: scripts/kconfig/menu.c: In function ‘get_symbol_str’: scripts/kconfig/menu.c:590:18: warning: ‘jump’ may be used uninitialized in this function [-Wmaybe-uninitialized] jump->offset = strlen(r->s); ^ In file included from scripts/kconfig/zconf.tab.c:2537:0: scripts/kconfig/menu.c:551:19: note: ‘jump’ was declared here struct jump_key *jump; Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- scripts/kconfig/menu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)