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* [gcc r12-7094] [nvptx] Fix 'main (int argc)' compilation
@ 2022-02-08 9:02 Tom de Vries
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From: Tom de Vries @ 2022-02-08 9:02 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:73f4a989b7f8aeaf8bff37e7f33b65d26b8f179f
commit r12-7094-g73f4a989b7f8aeaf8bff37e7f33b65d26b8f179f
Author: Tom de Vries <tdevries@suse.de>
Date: Mon Feb 7 14:50:13 2022 +0100
[nvptx] Fix 'main (int argc)' compilation
On nvptx, with test-case sso-12.c I run into:
...
spawn nvptx-none-run ./sso-12.exe^M
error: Prototype doesn't match for 'main' in 'input file 1 at offset 1796', \
first defined in 'input file 1 at offset 1796'^M
nvptx-run: cuLinkAddData failed: device kernel image is invalid \
(CUDA_ERROR_INVALID_SOURCE, 300)^M
FAIL: gcc.dg/sso-12.c execution test
...
The problem is that the test case uses 'main (int)' prototype, while __main
uses:
...
extern int main (int, void **);
...
There's code in write_fn_proto_1 to handle 'main (void)' as if
'main (int, void **)' was specified, but that's not active for 'main (int)'.
Fix this in write_fn_proto_1 by handling 'main (int)' as if
'main (int, void **)' was specified.
Tested on nvptx.
gcc/ChangeLog:
2022-02-07 Tom de Vries <tdevries@suse.de>
* config/nvptx/nvptx.cc (write_fn_proto_1): Handle 'main (int)'.
Diff:
---
gcc/config/nvptx/nvptx.cc | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/gcc/config/nvptx/nvptx.cc b/gcc/config/nvptx/nvptx.cc
index 2a694926b7a..006fac8c839 100644
--- a/gcc/config/nvptx/nvptx.cc
+++ b/gcc/config/nvptx/nvptx.cc
@@ -938,10 +938,13 @@ write_fn_proto_1 (std::stringstream &s, bool is_defn,
if (DECL_STATIC_CHAIN (decl))
argno = write_arg_type (s, -1, argno, ptr_type_node, true);
- if (!argno && strcmp (name, "main") == 0)
+ if (argno < 2 && strcmp (name, "main") == 0)
{
- argno = write_arg_type (s, -1, argno, integer_type_node, true);
- argno = write_arg_type (s, -1, argno, ptr_type_node, true);
+ if (argno == 0)
+ argno = write_arg_type (s, -1, argno, integer_type_node, true);
+
+ if (argno == 1)
+ argno = write_arg_type (s, -1, argno, ptr_type_node, true);
}
if (argno)
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