Silence a warning from Clang >=15 about an unused local variable
The assembly code uses t only on some architectures. Fixes #7166.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/ChangeLog.d/clang-15-bignum-warning.txt b/ChangeLog.d/clang-15-bignum-warning.txt
new file mode 100644
index 0000000..d3308b4
--- /dev/null
+++ b/ChangeLog.d/clang-15-bignum-warning.txt
@@ -0,0 +1,3 @@
+Bugfix
+ * Silence a warning about an unused local variable in bignum.c on
+ some architectures. Fixes #7166.
diff --git a/library/bignum.c b/library/bignum.c
index d915ade..5dca3a9 100644
--- a/library/bignum.c
+++ b/library/bignum.c
@@ -1427,6 +1427,7 @@
mbedtls_mpi_uint b)
{
mbedtls_mpi_uint c = 0, t = 0;
+ (void) t; /* Unused in some architectures */
#if defined(MULADDC_HUIT)
for (; i >= 8; i -= 8) {
@@ -1472,8 +1473,6 @@
}
#endif /* MULADDC_HUIT */
- t++;
-
while (c != 0) {
*d += c; c = (*d < c); d++;
}