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ea92b1f9d0
In gcc there exist a modifier option -Wformat-signedness that turns on additional signedness warnings in the already existing -Wformat warning. This patch implements that support in clang. This is done by adding a dummy warning diag::warn_format_conversion_argument_type_mismatch_signedness that is never emitted and only used as an option to toggle the signedness warning in -Wformat. This will ensure gcc compatibility.
99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
// RUN: cp %s %t
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// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -Wformat -Wformat-signedness -fixit %t
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// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -Wformat -Wformat-signedness -Werror %t
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// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -E -o - %t | FileCheck %s
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#include <limits.h>
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int printf(const char *restrict format, ...);
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void test_printf_int(int x)
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{
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printf("%u", x);
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}
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void test_printf_unsigned(unsigned x)
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{
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printf("%d", x);
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}
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void test_printf_long(long x)
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{
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printf("%lu", x);
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}
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void test_printf_unsigned_long(unsigned long x)
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{
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printf("%ld", x);
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}
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void test_printf_long_long(long long x)
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{
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printf("%llu", x);
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}
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void test_printf_unsigned_long_long(unsigned long long x)
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{
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printf("%lld", x);
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}
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enum enum_int {
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minus_1 = -1
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};
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void test_printf_enum_int(enum enum_int x)
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{
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printf("%u", x);
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}
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enum enum_unsigned {
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zero = 0
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};
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void test_printf_enum_unsigned(enum enum_unsigned x)
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{
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printf("%d", x);
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}
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enum enum_long {
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minus_one = -1,
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int_val = INT_MAX,
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unsigned_val = (unsigned)INT_MIN
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};
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void test_printf_enum_long(enum enum_long x)
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{
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printf("%lu", x);
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}
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enum enum_unsigned_long {
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uint_max_plus = (unsigned long)UINT_MAX+1,
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};
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void test_printf_enum_unsigned_long(enum enum_unsigned_long x)
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{
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printf("%ld", x);
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}
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// Validate the fixes.
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// CHECK: void test_printf_int(int x)
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// CHECK: printf("%d", x);
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// CHECK: void test_printf_unsigned(unsigned x)
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// CHECK: printf("%u", x);
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// CHECK: void test_printf_long(long x)
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// CHECK: printf("%ld", x);
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// CHECK: void test_printf_unsigned_long(unsigned long x)
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// CHECK: printf("%lu", x);
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// CHECK: void test_printf_long_long(long long x)
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// CHECK: printf("%lld", x);
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// CHECK: void test_printf_unsigned_long_long(unsigned long long x)
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// CHECK: printf("%llu", x);
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// CHECK: void test_printf_enum_int(enum enum_int x)
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// CHECK: printf("%d", x);
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// CHECK: void test_printf_enum_unsigned(enum enum_unsigned x)
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// CHECK: printf("%u", x);
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// CHECK: void test_printf_enum_long(enum enum_long x)
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// CHECK: printf("%ld", x);
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// CHECK: void test_printf_enum_unsigned_long(enum enum_unsigned_long x)
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// CHECK: printf("%lu", x);
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