glibc/SOURCES/glibc-rh2142937-3.patch

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2023-05-16 06:23:16 +00:00
commit c353689e49e72f3aafa1a9e68d4f7a4f33a79cbe
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Jul 5 12:58:40 2022 -0300
elf: Fix wrong fscanf usage on tst-pldd
The fix done b2cd93fce666fdc8c9a5c64af2741a8a6940ac99 does not really
work since macro strification does not expand the sizeof nor the
arithmetic operation.
Checked on x86_64-linux-gnu.
diff --git a/elf/tst-pldd.c b/elf/tst-pldd.c
index ab89798e250fdccc..52c0a75be5a808d1 100644
--- a/elf/tst-pldd.c
+++ b/elf/tst-pldd.c
@@ -108,15 +108,16 @@ do_test (void)
loader and libc. */
{
pid_t pid;
- char buffer[512];
-#define STRINPUT(size) "%" # size "s"
+#define BUFFERLEN 511
+ char buffer[BUFFERLEN + 1];
+#define STRINPUT(size) XSTRINPUT(size)
+#define XSTRINPUT(size) "%" # size "s"
FILE *out = fmemopen (pldd.out.buffer, pldd.out.length, "r");
TEST_VERIFY (out != NULL);
/* First line is in the form of <pid>: <full path of executable> */
- TEST_COMPARE (fscanf (out, "%u: " STRINPUT (sizeof (buffer) - 1), &pid,
- buffer), 2);
+ TEST_COMPARE (fscanf (out, "%u: " STRINPUT (BUFFERLEN), &pid, buffer), 2);
TEST_COMPARE (pid, *target_pid_ptr);
TEST_COMPARE (strcmp (basename (buffer), "tst-pldd"), 0);