From 39adc5eebd61fd276f3f1ef9d7228756a35bd0cb Mon Sep 17 00:00:00 2001 From: Tim Lange Date: Fri, 9 Jun 2023 20:08:22 +0200 Subject: [PATCH] testsuite: Add more allocation size tests for conjured svalues [PR110014] This patch adds the reproducers reported in PR 110014 as test cases. The false positives in those cases are already fixed with PR 109577. 2023-06-09 Tim Lange PR analyzer/110014 gcc/testsuite/ChangeLog: * gcc.dg/analyzer/realloc-pr110014.c: New tests. --- .../gcc.dg/analyzer/realloc-pr110014.c | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/analyzer/realloc-pr110014.c diff --git a/gcc/testsuite/gcc.dg/analyzer/realloc-pr110014.c b/gcc/testsuite/gcc.dg/analyzer/realloc-pr110014.c new file mode 100644 index 00000000000..d76b8781413 --- /dev/null +++ b/gcc/testsuite/gcc.dg/analyzer/realloc-pr110014.c @@ -0,0 +1,25 @@ +void *realloc (void *, unsigned long) + __attribute__((__nothrow__, __leaf__)) + __attribute__((__warn_unused_result__)) __attribute__((__alloc_size__ (2))); + +long * +slurp (long *buffer, unsigned long file_size) +{ + unsigned long cc; + if (!__builtin_add_overflow (file_size - file_size % sizeof (long), + 2 * sizeof (long), &cc)) + buffer = realloc (buffer, cc); + return buffer; +} + +long * +slurp1 (long *buffer, unsigned long file_size) +{ + return realloc (buffer, file_size - file_size % sizeof (long)); +} + +long * +slurp2 (long *buffer, unsigned long file_size) +{ + return realloc (buffer, (file_size / sizeof (long)) * sizeof (long)); +}