forked from OSchip/llvm-project
72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
// RUN: %check_clang_tidy %s bugprone-not-null-terminated-result %t -- \
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// RUN: -config="{CheckOptions: \
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// RUN: [{key: bugprone-not-null-terminated-result.WantToUseSafeFunctions, \
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// RUN: value: 1}]}" \
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// RUN: -- -std=c11 -I %S/Inputs/bugprone-not-null-terminated-result
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#include "not-null-terminated-result-c.h"
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// The following is not defined therefore the safe functions are unavailable.
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// #define __STDC_LIB_EXT1__ 1
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#define __STDC_WANT_LIB_EXT1__ 1
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//===----------------------------------------------------------------------===//
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// memcpy() - destination array tests
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//===----------------------------------------------------------------------===//
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void bad_memcpy_not_just_char_dest(const char *src) {
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unsigned char dest00[13];
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memcpy(dest00, src, strlen(src));
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the result from calling 'memcpy' is not null-terminated [bugprone-not-null-terminated-result]
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// CHECK-FIXES: unsigned char dest00[14];
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// CHECK-FIXES-NEXT: strcpy((char *)dest00, src);
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}
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void good_memcpy_not_just_char_dest(const char *src) {
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unsigned char dst00[14];
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strcpy((char *)dst00, src);
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}
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void bad_memcpy_known_dest(const char *src) {
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char dest01[13];
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memcpy(dest01, src, strlen(src));
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the result from calling 'memcpy' is not null-terminated [bugprone-not-null-terminated-result]
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// CHECK-FIXES: strcpy(dest01, src);
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}
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void good_memcpy_known_dest(const char *src) {
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char dst01[13];
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strcpy(dst01, src);
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}
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//===----------------------------------------------------------------------===//
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// memcpy() - length tests
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//===----------------------------------------------------------------------===//
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void bad_memcpy_full_source_length(const char *src) {
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char dest20[13];
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memcpy(dest20, src, strlen(src));
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the result from calling 'memcpy' is not null-terminated [bugprone-not-null-terminated-result]
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// CHECK-FIXES: strcpy(dest20, src);
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}
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void good_memcpy_full_source_length(const char *src) {
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char dst20[13];
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strcpy(dst20, src);
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}
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void bad_memcpy_partial_source_length(const char *src) {
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char dest21[13];
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memcpy(dest21, src, strlen(src) - 1);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the result from calling 'memcpy' is not null-terminated [bugprone-not-null-terminated-result]
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// CHECK-FIXES: strncpy(dest21, src, strlen(src) - 1);
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// CHECK-FIXES-NEXT: dest21[strlen(src) - 1] = '\0';
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}
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void good_memcpy_partial_source_length(const char *src) {
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char dst21[13];
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strncpy(dst21, src, strlen(src) - 1);
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dst21[strlen(src) - 1] = '\0';
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}
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