It started with g:3e2ae3ee285a57455d5a23bd352a68c289130186 where
new entry was added to processor_alias_table after generic node:
+ {"amdfam19h", PROCESSOR_GENERIC, CPU_GENERIC, 0,
+ M_CPU_TYPE (AMDFAM19H), P_NONE},
and then the following is violated:
/* NB: processor_alias_table stops at the "generic" entry. */
Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
Ready to be installed?
Thanks,
Martin
gcc/ChangeLog:
PR target/99753
* common/config/i386/i386-common.c (ARRAY_SIZE): Fix off-by-one
error.
* config/i386/i386-options.c (ix86_option_override_internal):
Add run-time assert.
gcc/testsuite/ChangeLog:
PR target/99753
* gcc.target/i386/pr99753.c: New test.
---
gcc/common/config/i386/i386-common.c | 2 +-
gcc/config/i386/i386-options.c | 3 +++
gcc/testsuite/gcc.target/i386/pr99753.c | 5 +++++
3 files changed, 9 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gcc.target/i386/pr99753.c
diff --git a/gcc/common/config/i386/i386-common.c
b/gcc/common/config/i386/i386-common.c
index eea8af12f48..b89183b830e 100644
--- a/gcc/common/config/i386/i386-common.c
+++ b/gcc/common/config/i386/i386-common.c
@@ -2051,7 +2051,7 @@ const pta processor_alias_table[] =
};
/* NB: processor_alias_table stops at the "generic" entry. */
-unsigned int const pta_size = ARRAY_SIZE (processor_alias_table) - 6;
+unsigned int const pta_size = ARRAY_SIZE (processor_alias_table) - 7;
unsigned int const num_arch_names = ARRAY_SIZE (processor_alias_table);
/* Provide valid option values for -march and -mtune options. */
diff --git a/gcc/config/i386/i386-options.c b/gcc/config/i386/i386-options.c
index b653527d266..88d5e717f26 100644
--- a/gcc/config/i386/i386-options.c
+++ b/gcc/config/i386/i386-options.c
@@ -2042,6 +2042,9 @@ ix86_option_override_internal (bool main_args_p,
sorry ("%i-bit mode not compiled in",
(opts->x_ix86_isa_flags & OPTION_MASK_ISA_64BIT) ? 64 : 32);
+ /* Last processor_alias_table must point to "generic" entry. */
+ gcc_checking_assert (strcmp (processor_alias_table[pta_size - 1].name,
+ "generic") == 0);
for (i = 0; i < pta_size; i++)
if (! strcmp (opts->x_ix86_arch_string, processor_alias_table[i].name))
{
diff --git a/gcc/testsuite/gcc.target/i386/pr99753.c
b/gcc/testsuite/gcc.target/i386/pr99753.c
new file mode 100644
index 00000000000..3def1fd7481
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr99753.c
@@ -0,0 +1,5 @@
+/* PR target/99753 */
+
+/* { dg-do compile } */
+/* { dg-options "-march=amd -m32" } */
+/* { dg-error "bad value .'amd'. for '-march=' switch" "" { target *-*-* } 0
} */
--
2.30.2
