From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 7884) id B4FA83856631; Sat, 10 Jun 2023 12:29:33 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B4FA83856631 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1686400173; bh=Aao22IMJmkFzo2OWDWBGbkqdDWn3bVh1EoGuEbluqH4=; h=From:To:Subject:Date:From; b=nzpQZ2lQekPiuoGaMDBjCKtA6tbVzpPf8bfNyh+xP3elKR3i8ZFtkkNW6hpBIZK8K XYNDcSfU4VkOuz9P+ydQL4a2hmS3nnsQu14dCO9MwY23d7Oxz18G4CI6i1u3UrOsab Lw/eDPa5wWVfNdAEZwIslSdkrxRXdhp0uwNniZ1w= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Tim Lange To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-1685] testsuite: Add more allocation size tests for conjured svalues [PR110014] X-Act-Checkin: gcc X-Git-Author: Tim Lange X-Git-Refname: refs/heads/master X-Git-Oldrev: 1d57a2232575913ad1085bac0ba5e22b58185179 X-Git-Newrev: 39adc5eebd61fd276f3f1ef9d7228756a35bd0cb Message-Id: <20230610122933.B4FA83856631@sourceware.org> Date: Sat, 10 Jun 2023 12:29:33 +0000 (GMT) List-Id: https://gcc.gnu.org/g:39adc5eebd61fd276f3f1ef9d7228756a35bd0cb commit r14-1685-g39adc5eebd61fd276f3f1ef9d7228756a35bd0cb Author: Tim Lange Date: Fri Jun 9 20:08:22 2023 +0200 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. Diff: --- gcc/testsuite/gcc.dg/analyzer/realloc-pr110014.c | 25 ++++++++++++++++++++++++ 1 file changed, 25 insertions(+) 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)); +}