diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /tools/clang-tidy/test/bugprone-suspicious-memset-usage.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-37a0381f8351b370577b65028ba1f6563ae23fdf.tar.xz firefox-esr-37a0381f8351b370577b65028ba1f6563ae23fdf.zip |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/clang-tidy/test/bugprone-suspicious-memset-usage.cpp')
-rw-r--r-- | tools/clang-tidy/test/bugprone-suspicious-memset-usage.cpp | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/clang-tidy/test/bugprone-suspicious-memset-usage.cpp b/tools/clang-tidy/test/bugprone-suspicious-memset-usage.cpp new file mode 100644 index 0000000000..71fe7239a1 --- /dev/null +++ b/tools/clang-tidy/test/bugprone-suspicious-memset-usage.cpp @@ -0,0 +1,22 @@ +// https://clang.llvm.org/extra/clang-tidy/checks/bugprone-suspicious-memset-usage.html + +#include "structures.h" + +void test(int* ip, char* cp) +{ + // Case 1: Fill value is a character '0' instead of NUL '\0'. + memset(ip, '0', 1); // WARNING: suspicious for non-char pointers + memset(cp, '0', 1); // OK for char pointers + + // Case 2: Fill value is truncated. + memset(ip, 0xabcd, 1); // WARNING: fill value gets truncated + memset(ip, 0x00cd, 1); // OK because value 0xcd is not truncated. + memset(ip, 0x00, 1); // OK because value is not truncated. + + // Case 3: Byte count is zero. + memset(ip, sizeof(int), 0); // WARNING: zero length, potentially swapped + memset(ip, sizeof(int), 1); // OK with non-zero length + + // See clang bug https://bugs.llvm.org/show_bug.cgi?id=38098 + memset(ip, 8, 0); // OK with zero length without sizeof +} |