[gcc r16-9471] testsuite: tolerate argc==0 [PR126194]

https://gcc.gnu.org/g:52f2f1a7249f1e8be4010fc2f7d6386e14eda77a

commit r16-9471-g52f2f1a7249f1e8be4010fc2f7d6386e14eda77a
Author: Alexandre Oliva <[email protected]>
Date:   Fri Jul 31 01:42:14 2026 -0300

    testsuite: tolerate argc==0 [PR126194]
    
    Some embedded targets set argc to zero when calling main, but then
    pr126194 testcase fails because it uses argc > 0 to enable the code
    that allows the test to pass.  Derive the argc passed to the primary
    LTOed entry point from argc >= 0, so that it isn't a link-time
    constant, but the guarding condition always passes at runtime.
    
    
    for  gcc/testsuite/ChangeLog
    
            PR tree-optimization/126194
            * g++.dg/lto/pr126194_2.C (main): Tolerate argc == 0.
    (cherry picked from commit 7c38c56214bf2809399a2198441bb48ee1b00512)

Diff:
---
 gcc/testsuite/g++.dg/lto/pr126194_2.C | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/g++.dg/lto/pr126194_2.C b/gcc/testsuite/g++.dg/lto/pr126194_2.C
index 3c024f47a196..9725a4239cdf 100644
--- a/gcc/testsuite/g++.dg/lto/pr126194_2.C
+++ b/gcc/testsuite/g++.dg/lto/pr126194_2.C
@@ -4,5 +4,5 @@ extern "C" int run_repro(int argc);
 
 int main(int argc, char**)
 {
-    return run_repro(argc);
+    return run_repro(argc >= 0);
 }