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The main focus of this patch is to make ArgType::matchesType check for possible default parameter promotions when the argType is not a pointer. If so, no warning will be given for `int`, `unsigned int` types as corresponding arguments to %hhd and %hd. However, the usage of %hhd corresponding to short is relatively rare, and it is more likely to be a misuse. This patch keeps the original behavior of clang like this as much as possible, while making it more convenient to consider the default arguments promotion. Fixes https://github.com/llvm/llvm-project/issues/57102 Reviewed By: aaron.ballman, nickdesaulniers, #clang-language-wg Differential Revision: https://reviews.llvm.org/D132568
49 lines
3.1 KiB
C
49 lines
3.1 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify -triple i386-unknown-freebsd %s
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// RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-unknown-freebsd %s
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// RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-scei-ps4 %s
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// RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-sie-ps5 %s
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// Test FreeBSD kernel printf extensions.
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int freebsd_kernel_printf(const char *, ...) __attribute__((__format__(__freebsd_kprintf__, 1, 2)));
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void check_freebsd_kernel_extensions(int i, long l, char *s, short h)
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{
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// %b expects an int and a char *
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freebsd_kernel_printf("reg=%b\n", i, "\10\2BITTWO\1BITONE\n"); // no-warning
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freebsd_kernel_printf("reg=%b\n", l, "\10\2BITTWO\1BITONE\n"); // expected-warning{{format specifies type 'int' but the argument has type 'long'}}
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freebsd_kernel_printf("reg=%b\n", i, l); // expected-warning{{format specifies type 'char *' but the argument has type 'long'}}
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freebsd_kernel_printf("reg=%b\n", i); // expected-warning{{more '%' conversions than data arguments}}
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freebsd_kernel_printf("reg=%b\n", i, "\10\2BITTWO\1BITONE\n", l); // expected-warning{{data argument not used by format string}}
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// %D expects an unsigned char * and a char *
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freebsd_kernel_printf("%6D", s, ":"); // no-warning
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freebsd_kernel_printf("%6D", i, ":"); // expected-warning{{format specifies type 'void *' but the argument has type 'int'}}
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freebsd_kernel_printf("%6D", s, i); // expected-warning{{format specifies type 'char *' but the argument has type 'int'}}
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freebsd_kernel_printf("%6D", s); // expected-warning{{more '%' conversions than data arguments}}
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freebsd_kernel_printf("%6D", s, ":", i); // expected-warning{{data argument not used by format string}}
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freebsd_kernel_printf("%*D", 42, s, ":"); // no-warning
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freebsd_kernel_printf("%*D", 42, i, ":"); // expected-warning{{format specifies type 'void *' but the argument has type 'int'}}
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freebsd_kernel_printf("%*D", 42, s, i); // expected-warning{{format specifies type 'char *' but the argument has type 'int'}}
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freebsd_kernel_printf("%*D", 42, s); // expected-warning{{more '%' conversions than data arguments}}
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freebsd_kernel_printf("%*D", 42, s, ":", i); // expected-warning{{data argument not used by format string}}
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// %r expects an int
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freebsd_kernel_printf("%r", i); // no-warning
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freebsd_kernel_printf("%r", l); // expected-warning{{format specifies type 'int' but the argument has type 'long'}}
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freebsd_kernel_printf("%lr", i); // expected-warning{{format specifies type 'long' but the argument has type 'int'}}
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freebsd_kernel_printf("%lr", l); // no-warning
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// h modifier expects a short
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freebsd_kernel_printf("%hr", i); // no-warning
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freebsd_kernel_printf("%hr", h); // no-warning
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freebsd_kernel_printf("%hy", i); // no-warning
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freebsd_kernel_printf("%hy", h); // no-warning
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// %y expects an int
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freebsd_kernel_printf("%y", i); // no-warning
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freebsd_kernel_printf("%y", l); // expected-warning{{format specifies type 'int' but the argument has type 'long'}}
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freebsd_kernel_printf("%ly", i); // expected-warning{{format specifies type 'long' but the argument has type 'int'}}
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freebsd_kernel_printf("%ly", l); // no-warning
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}
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