From 31cc6081778b66c7fc1d0e864fea5a73dcbd25c8 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Tue, 10 Feb 2004 13:41:16 +0000 Subject: [PATCH] re PR middle-end/14092 (fold strips conversion from pointer to integer) PR c/14092 * gcc.dg/pr14092-1.c: New testcase. * fold-const.c (fold) : Convert result of negate_expr back to the original type. From-SVN: r77602 --- gcc/ChangeLog | 6 ++++++ gcc/fold-const.c | 2 +- gcc/testsuite/ChangeLog | 6 ++++++ gcc/testsuite/gcc.dg/pr14092-1.c | 17 +++++++++++++++++ 4 files changed, 30 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.dg/pr14092-1.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1f6b7482152b..c235d08ef500 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2004-02-10 Paolo Bonzini + + PR c/14092 + * fold-const.c (fold) : Convert result of + negate_expr back to the original type. + 2004-02-10 Alan Modra * config/rs6000/linux64.h (MD_FALLBACK_FRAME_STATE_FOR): Don't diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 3f68051da2d8..71f1e9bce095 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -5785,7 +5785,7 @@ fold (tree expr) case NEGATE_EXPR: if (negate_expr_p (arg0)) - return negate_expr (arg0); + return fold_convert (type, negate_expr (arg0)); return t; case ABS_EXPR: diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index b0bcf5fee414..a22f644a4abf 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2004-02-10 Paolo Bonzini + + PR c/14092 + + * gcc.dg/pr14092-1.c: New testcase. + 2004-02-10 Alan Modra * gcc.dg/cpp/assert4.c: Fix typo last change. diff --git a/gcc/testsuite/gcc.dg/pr14092-1.c b/gcc/testsuite/gcc.dg/pr14092-1.c new file mode 100644 index 000000000000..86076c241e0d --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr14092-1.c @@ -0,0 +1,17 @@ +/* PR c/14092 + * Origin: bonzini@gnu.org + * rejects-valid + */ +/* { dg-do compile } */ + +typedef struct _PLCI { + unsigned char x; + unsigned char buf[1]; +} PLCI; + + +void nl_ind(PLCI * plci) +{ + plci->x = -((int)(plci->buf)) & 3; +} + -- 2.47.2