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| author | Richard Biener <rguenther@suse.de> | 2023-01-19 08:44:25 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2023-01-23 08:27:19 +0100 |
| commit | 106f99406312d7ed47434de53c180718225ffa5e (patch) | |
| tree | 0e187daf09c4c9d0474346a5ca312b6bf987ced7 /gcc | |
| parent | e61d43791e0943414d33c96de1dd4bfe5f611e29 (diff) | |
| download | gcc-106f99406312d7ed47434de53c180718225ffa5e.zip gcc-106f99406312d7ed47434de53c180718225ffa5e.tar.gz gcc-106f99406312d7ed47434de53c180718225ffa5e.tar.bz2 | |
tree-optimization/108449 - keep maybe_special_function_p behavior
When we have a static declaration without definition we diagnose
that and turn it into an extern declaration. That can alter
the outcome of maybe_special_function_p here and there's really
no point in doing that, so don't.
PR tree-optimization/108449
* cgraphunit.cc (check_global_declaration): Do not turn
undefined statics into externs.
* gcc.dg/pr108449.c: New testcase.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cgraphunit.cc | 2 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr108449.c | 5 |
2 files changed, 5 insertions, 2 deletions
diff --git a/gcc/cgraphunit.cc b/gcc/cgraphunit.cc index 59ce270..832818d 100644 --- a/gcc/cgraphunit.cc +++ b/gcc/cgraphunit.cc @@ -1087,8 +1087,6 @@ check_global_declaration (symtab_node *snode) else warning (OPT_Wunused_function, "%q+F declared %<static%> but never " "defined", decl); - /* This symbol is effectively an "extern" declaration now. */ - TREE_PUBLIC (decl) = 1; } /* Warn about static fns or vars defined but not used. */ diff --git a/gcc/testsuite/gcc.dg/pr108449.c b/gcc/testsuite/gcc.dg/pr108449.c new file mode 100644 index 0000000..4a3ae5b --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr108449.c @@ -0,0 +1,5 @@ +/* { dg-do compile } */ +/* { dg-options "-O" } */ + +static int vfork(); /* { dg-warning "used but never defined" } */ +void f() { vfork(); } |