48 lines
2.8 KiB
C++
48 lines
2.8 KiB
C++
#include <cstdio>
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void bad() {
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char x[100];
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snprintf(x, sizeof(x), "bar"); // expected-error {{Use SprintfLiteral instead of snprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to snprintf accidentally.}}
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snprintf(x, 100, "bar"); // expected-error {{Use SprintfLiteral instead of snprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to snprintf accidentally.}}
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snprintf(x, 101, "bar"); // expected-error {{Use SprintfLiteral instead of snprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to snprintf accidentally.}}
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const int hundred = 100;
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snprintf(x, hundred, "bar"); // expected-error {{Use SprintfLiteral instead of snprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to snprintf accidentally.}}
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const int hundredandone = 101;
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snprintf(x, hundredandone, "bar"); // expected-error {{Use SprintfLiteral instead of snprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to snprintf accidentally.}}
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}
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void ok() {
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char x[100];
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int y;
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snprintf(x, sizeof(y), "what");
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snprintf(x, 50, "what");
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int nothundred = 100;
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nothundred = 99;
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snprintf(x, nothundred, "what");
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}
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void vargs_bad(va_list args) {
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char x[100];
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vsnprintf(x, sizeof(x), "bar", args); // expected-error {{Use VsprintfLiteral instead of vsnprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to vsnprintf accidentally.}}
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vsnprintf(x, 100, "bar", args); // expected-error {{Use VsprintfLiteral instead of vsnprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to vsnprintf accidentally.}}
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vsnprintf(x, 101, "bar", args); // expected-error {{Use VsprintfLiteral instead of vsnprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to vsnprintf accidentally.}}
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const int hundred = 100;
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vsnprintf(x, hundred, "bar", args); // expected-error {{Use VsprintfLiteral instead of vsnprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to vsnprintf accidentally.}}
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const int hundredandone = 101;
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vsnprintf(x, hundredandone, "bar", args); // expected-error {{Use VsprintfLiteral instead of vsnprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to vsnprintf accidentally.}}
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}
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void vargs_good(va_list args) {
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char x[100];
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int y;
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vsnprintf(x, sizeof(y), "what", args);
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vsnprintf(x, 50, "what", args);
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int nothundred = 100;
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nothundred = 99;
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vsnprintf(x, nothundred, "what", args);
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}
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