libpayload: Enable -Wimplicit-fallthrough
Add comments to intentional fall throughs and enable the warning. Change-Id: I93e071c4fb139fa6e9cd8a1bfb5800f5f4eac50b Signed-off-by: Jacob Garber <jgarber1@ualberta.ca> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34457 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
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@ -63,7 +63,7 @@ CFLAGS += $(EXTRA_CFLAGS) $(INCLUDES) -Os -pipe -nostdinc -ggdb3
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CFLAGS += -nostdlib -fno-builtin -ffreestanding -fomit-frame-pointer
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CFLAGS += -ffunction-sections -fdata-sections
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CFLAGS += -Wall -Wundef -Wstrict-prototypes -Wmissing-prototypes
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CFLAGS += -Wwrite-strings -Wredundant-decls -Wno-trigraphs
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CFLAGS += -Wwrite-strings -Wredundant-decls -Wno-trigraphs -Wimplicit-fallthrough
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CFLAGS += -Wstrict-aliasing -Wshadow -Werror
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$(obj)/libpayload-config.h: $(KCONFIG_AUTOHEADER)
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@ -274,7 +274,7 @@ static int _pdc_vsscanf(const char *buf, const char *fmt, va_list arg_ptr)
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NEXT(c);
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goto string;
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}
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/* no break */
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/* fall through */
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default:
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if (fmt[1] == '-' && fmt[2]
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&& f < (unsigned char)fmt[2])
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@ -585,6 +585,7 @@ static int printf_core(const char *fmt, struct printf_spec *ps, va_list ap)
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/* Integer values */
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case 'P': /* pointer */
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flags |= __PRINTF_FLAG_BIGCHARS;
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/* fall through */
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case 'p':
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flags |= __PRINTF_FLAG_PREFIX;
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base = 16;
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@ -599,10 +600,12 @@ static int printf_core(const char *fmt, struct printf_spec *ps, va_list ap)
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case 'd':
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case 'i':
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flags |= __PRINTF_FLAG_SIGNED;
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break;
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case 'u':
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break;
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case 'X':
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flags |= __PRINTF_FLAG_BIGCHARS;
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/* fall through */
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case 'x':
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base = 16;
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break;
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