forked from OSchip/llvm-project
86 lines
3.9 KiB
C
86 lines
3.9 KiB
C
// RUN: %check_clang_tidy %s bugprone-misplaced-operator-in-strlen-in-alloc %t
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typedef __typeof(sizeof(int)) size_t;
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void *malloc(size_t);
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void *alloca(size_t);
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void *calloc(size_t, size_t);
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void *realloc(void *, size_t);
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size_t strlen(const char *);
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size_t strnlen(const char *, size_t);
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size_t strnlen_s(const char *, size_t);
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typedef unsigned wchar_t;
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size_t wcslen(const wchar_t *);
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size_t wcsnlen(const wchar_t *, size_t);
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size_t wcsnlen_s(const wchar_t *, size_t);
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void bad_malloc(char *name) {
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char *new_name = (char *)malloc(strlen(name + 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: addition operator is applied to the argument of strlen
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// CHECK-FIXES: {{^ char \*new_name = \(char \*\)malloc\(}}strlen(name) + 1{{\);$}}
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new_name = (char *)malloc(strnlen(name + 1, 10));
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// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: addition operator is applied to the argument of strnlen
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// CHECK-FIXES: {{^ new_name = \(char \*\)malloc\(}}strnlen(name, 10) + 1{{\);$}}
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new_name = (char *)malloc(strnlen_s(name + 1, 10));
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// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: addition operator is applied to the argument of strnlen_s
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// CHECK-FIXES: {{^ new_name = \(char \*\)malloc\(}}strnlen_s(name, 10) + 1{{\);$}}
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}
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void bad_malloc_wide(wchar_t *name) {
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wchar_t *new_name = (wchar_t *)malloc(wcslen(name + 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: addition operator is applied to the argument of wcslen
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// CHECK-FIXES: {{^ wchar_t \*new_name = \(wchar_t \*\)malloc\(}}wcslen(name) + 1{{\);$}}
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new_name = (wchar_t *)malloc(wcsnlen(name + 1, 10));
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// CHECK-MESSAGES: :[[@LINE-1]]:25: warning: addition operator is applied to the argument of wcsnlen
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// CHECK-FIXES: {{^ new_name = \(wchar_t \*\)malloc\(}}wcsnlen(name, 10) + 1{{\);$}}
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new_name = (wchar_t *)malloc(wcsnlen_s(name + 1, 10));
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// CHECK-MESSAGES: :[[@LINE-1]]:25: warning: addition operator is applied to the argument of wcsnlen_s
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// CHECK-FIXES: {{^ new_name = \(wchar_t \*\)malloc\(}}wcsnlen_s(name, 10) + 1{{\);$}}
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}
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void bad_alloca(char *name) {
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char *new_name = (char *)alloca(strlen(name + 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: addition operator is applied to the argument of strlen
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// CHECK-FIXES: {{^ char \*new_name = \(char \*\)alloca\(}}strlen(name) + 1{{\);$}}
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}
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void bad_calloc(char *name) {
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char *new_names = (char *)calloc(2, strlen(name + 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:29: warning: addition operator is applied to the argument of strlen
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// CHECK-FIXES: {{^ char \*new_names = \(char \*\)calloc\(2, }}strlen(name) + 1{{\);$}}
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}
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void bad_realloc(char *old_name, char *name) {
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char *new_name = (char *)realloc(old_name, strlen(name + 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: addition operator is applied to the argument of strlen
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// CHECK-FIXES: {{^ char \*new_name = \(char \*\)realloc\(old_name, }}strlen(name) + 1{{\);$}}
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}
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void intentional1(char *name) {
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char *new_name = (char *)malloc(strlen(name + 1) + 1);
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// CHECK-MESSAGES-NOT: :[[@LINE-1]]:28: warning: addition operator is applied to the argument of strlen
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// We have + 1 outside as well so we assume this is intentional
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}
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void intentional2(char *name) {
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char *new_name = (char *)malloc(strlen(name + 2));
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// CHECK-MESSAGES-NOT: :[[@LINE-1]]:28: warning: addition operator is applied to the argument of strlen
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// Only give warning for + 1, not + 2
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}
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void intentional3(char *name) {
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char *new_name = (char *)malloc(strlen((name + 1)));
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// CHECK-MESSAGES-NOT: :[[@LINE-1]]:28: warning: addition operator is applied to the argument of strlen
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// If expression is in extra parentheses, consider it as intentional
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}
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void (*(*const alloc_ptr)(size_t)) = malloc;
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void bad_indirect_alloc(char *name) {
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char *new_name = (char *)alloc_ptr(strlen(name + 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: addition operator is applied to the argument of strlen
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// CHECK-FIXES: {{^ char \*new_name = \(char \*\)alloc_ptr\(}}strlen(name) + 1{{\);$}}
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}
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