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| author | Jan Dubiec <jdx@o2.pl> | 2025-03-03 01:15:44 +0100 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2025-03-03 11:45:36 +0100 |
| commit | 53483eddbce70247a28a9d41dd33e2c559925ed4 (patch) | |
| tree | 7a1857a4569c26b3bf2aa305f6de46b2e15d54c3 /newlib/libc/stdlib/arc4random.c | |
| parent | 7962e3b26e5d6e8a1228baa63350321c8d9f31de (diff) | |
| download | newlib-53483eddbce70247a28a9d41dd33e2c559925ed4.zip newlib-53483eddbce70247a28a9d41dd33e2c559925ed4.tar.gz newlib-53483eddbce70247a28a9d41dd33e2c559925ed4.tar.bz2 | |
Silence -Woverflow warning in arc4random.c
This patch fixes "integer overflow" warning in arc4random.c. It explicitly
casts REKEY_BASE macro to size_t. The existing code relies on an implicit
conversion to int and assumes that sizeof(int)=sizeof(size_t), which is
not always true.
2025-03-02 Jan Dubiec <jdx@o2.pl>
newlib/ChangeLog:
* libc/stdlib/arc4random.c (REKEY_BASE): Explicitly cast the macro
to size_t.
newlib/libc/stdlib/arc4random.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Diffstat (limited to 'newlib/libc/stdlib/arc4random.c')
| -rw-r--r-- | newlib/libc/stdlib/arc4random.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/newlib/libc/stdlib/arc4random.c b/newlib/libc/stdlib/arc4random.c index 09a134c..bc59678 100644 --- a/newlib/libc/stdlib/arc4random.c +++ b/newlib/libc/stdlib/arc4random.c @@ -50,11 +50,11 @@ #define RSBUFSZ (16*BLOCKSZ) #if SIZE_MAX <= 65535 -#define REKEY_BASE ( 32*1024) /* NB. should be a power of 2 */ +#define REKEY_BASE ( (size_t)32*1024) /* NB. should be a power of 2 */ #elif SIZE_MAX <= 1048575 -#define REKEY_BASE ( 512*1024) /* NB. should be a power of 2 */ +#define REKEY_BASE ( (size_t)512*1024) /* NB. should be a power of 2 */ #else -#define REKEY_BASE (1024*1024) /* NB. should be a power of 2 */ +#define REKEY_BASE ((size_t)1024*1024) /* NB. should be a power of 2 */ #endif /* Marked MAP_INHERIT_ZERO, so zero'd out in fork children. */ |