diff options
| author | Kaveh R. Ghazi <ghazi@caip.rutgers.edu> | 2000-10-31 18:27:42 +0000 |
|---|---|---|
| committer | Kaveh Ghazi <ghazi@gcc.gnu.org> | 2000-10-31 18:27:42 +0000 |
| commit | bcb38cc180d1f56eab538f76c2a608e6dfd61da9 (patch) | |
| tree | 36069d01197f46a9e613f71dc306dcb1c4138213 /gcc/builtins.c | |
| parent | bc359d3a5d3e8e6a5ad489b9da8740c2cf7bf301 (diff) | |
| download | gcc-bcb38cc180d1f56eab538f76c2a608e6dfd61da9.zip gcc-bcb38cc180d1f56eab538f76c2a608e6dfd61da9.tar.gz gcc-bcb38cc180d1f56eab538f76c2a608e6dfd61da9.tar.bz2 | |
builtins.c (expand_builtin_fputs): When deleting NOP calls to builtin fputs...
* builtins.c (expand_builtin_fputs): When deleting NOP calls to
builtin fputs, ensure we still evaluate the stream in case it
has side-effects.
testsuite:
* gcc.c-torture/execute/stdio-opt-1.c: New test.
From-SVN: r37162
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index e2acada..3304b68 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -2351,7 +2351,13 @@ expand_builtin_fputs (arglist, ignore) switch (compare_tree_int (len, 1)) { case -1: /* length is 0, delete the call entirely . */ - return const0_rtx; + { + /* Evaluate and ignore the argument in case it has + side-effects. */ + expand_expr (TREE_VALUE (TREE_CHAIN (arglist)), const0_rtx, + VOIDmode, EXPAND_NORMAL); + return const0_rtx; + } case 0: /* length is 1, call fputc. */ { tree stripped_string = TREE_VALUE (arglist); |