ld: testsuite: Fix integer overflow in ld/testsuite/ld-elf/init-mixed.c.
Fixes an integer overflow in an ld test case by using a fixed-width integer type.
A patch addresses an integer overflow vulnerability in the ld/testsuite/ld-elf/init-mixed.c test file. The issue arises because the code assumes that int is 32 bits wide, which is not guaranteed across all platforms. The fix replaces the int count variable with int32_t to ensure a consistent 32-bit width, thus preventing potential overflows.
In Details
This patch targets a test case within the GNU linker (ld) test suite. The specific file, init-mixed.c, appears to be exercising initialization routines in ELF objects. The problem lies in a variable count whose size is dependent on the platform's int type. By using int32_t, the patch ensures that the variable correctly handles values up to 32 bits, preventing overflows that could lead to false test failures or incorrect test behavior.
- ld
- The GNU linker, responsible for combining object files and libraries into an executable or shared library.
- testsuite
- A collection of tests designed to verify the correctness of a software component.
- ELF
- Executable and Linkable Format, a common standard file format for object files, executables, shared libraries, and core dumps on Unix-like operating systems.
- integer overflow
- A condition that occurs when an arithmetic operation attempts to create a numeric value that is too large to be represented within the available storage space.
- int32_t
- A fixed-width integer type defined in C and C++ that is guaranteed to be exactly 32 bits in size.