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From: andreas@dwl.co.uk To: gcc-gnats@gcc.gnu.org Subject: c++/3594: (<expr != 0) != 0 bad code with -O2 under sparc solaris 2.8 Date: Fri, 06 Jul 2001 08:26:00 -0000 [thread overview] Message-ID: <20010706152054.20644.qmail@sourceware.cygnus.com> (raw) >Number: 3594 >Category: c++ >Synopsis: (<expr != 0) != 0 bad code with -O2 under sparc solaris 2.8 >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: wrong-code >Submitter-Id: net >Arrival-Date: Fri Jul 06 08:26:00 PDT 2001 >Closed-Date: >Last-Modified: >Originator: Andreas Damm >Release: 2.95.3 >Organization: >Environment: sparc-sun-solaris2.8 >Description: When compiling the test program with c++ -O2, the last assembly command is left of in the generated code (and x, 1, x) which leads to incorrect results. Compiling with gcc is OK. So is leaving of the != 0. Function foo is one line: return FD_ISSET(fd, fdset) != 0; >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: ----gnatsweb-attachment---- Content-Type: application/octet-stream; name="bug.ii.bz2" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="bug.ii.bz2" QlpoOTFBWSZTWSsXcXoABYV/wH//7FF7f//veyYeCr////oAAOANPAAAa+2Yr7eup4dbd3VJR6l9 9ugfQ3dwIGz7tJCSiaRqZDTE9Gk2gQyAAAAAAADNQNAYhE00Ck9TR5CANG0jTQAaAAAAAAA1NSAA AANAAAAAAGQAAAaASaSJJok9U9PST1AH5UPQamngmSAbUAAyAAACKiag01NiRpGj0CGmAEaDEZAB hMACaZASakQQ0TKeE1NNMinlPUNPUDaTQaaAAAAA9IdPSCRYAAyTdDzSf1P6Ipmf8ivAsSIkP1HD xD44qKb5A4xYmSOFolUWZvBTEe2cp0LxViDIxVQQZqlGIKIsUREiybIZnQCZb8hD4Dz+X1ef4fT6 jn7r3lrCqyCfI1HrfBLcVBF1kYrIVYT4zU9rcNvhSHGwK3VocrjMpoKfw0VwNCZRYbo0dQmRnJzb S45rYhmWG0rmUzIO9zIRJraODgGISAc1+WielPCKGildNhWNRrjkBwuXGGUGxMAgCJUJAMrvXWlb /0m0wTDMFKUtFfmpG23MYxYrEWDbKKgsWo2gViPDBQxFkFWtyhjBeQsIYXXG9ZbFTWKbtqfbyY7Y VC6uSQWtrViIW2KXkWiKYA9Gr0bNjjxjTFF0lRY6qkKhJpRyJKMCWSYgYCGEsSbSaSKKxYCk6bUU NqtpSpQqpVqyNpYUK0paKWKCPpMsxIKilJDR3znCCmL2tEqB0a42aM7uM8clpBOJbTvxkFubWzIp SCrsiHhKtHZw00UjMzp8fj6ve5aff9HVnNZ05c5JcsKixGQRihdgLIUBtQiwOfT3D1a69Lev6L60 +5agztKfTtOJJ9Lbc5GgUTkol8yRIV9fbjr7YGQ1u3kOghFUPBrA8vm8t0n8yvBsFtjrNyaHMy5a U1Mp5uv1n3STyBE+iyUIyecqxUVFiiqHQJYO6BBA+QHb8Ozzd/jR4WfDx7Tl8KxRJ7lafA7iVDR7 QQagV/K2HaXwByZ/EhgZwWZEnDK55DIM0GW2RMyomZapWdjEmIFNfSTDgYynAc77uyZlslK2M1GC WwUDHLwsBrQNWcJKs0ZGePvyrx/tnMUXdwtRXoCWSpanm3c8vG+h1w94MYIu+pJBNQSCPoxvaxp6 /RxvQgxV+Bun8WBSPcQ39wRPX67x3jVlh69gjpeHx1edI6uj5YmU2g8DrcdkcD98YExh77x4r154 ug4TgG8mnwoXjjz+oD21VA0MWU/EQyAJxBRg6NLqwz9lakRBTVVKxRizZ1AfZfIe14eSdnfpbQ1h dStLWqiKlm7YKuZnxH29x7ofHYqaVb49Z5YEENBAYAKxBizaMD60CG/YOWuuXS0LeidiB5wwciZ9 SID5MQB6tYgRMwDvNY4d34BMMq59bGADWbURyWKdKlBxyLyRhflQkEYkhC+lN6CARfbnaqxAkcz2 CgQJFVbYzMkbDDvCwVkuLoxOICRXH0MC4nfW28m9Xh9dpxkwEQYfK4AWxKYCEQ+LB1xog+zIbYKB QrucWGoSeghaN4qsM+o6zk5VtZk990xOwNsQLZ4VZjvSdnICYliWowFiAi9DRVk3JYmKSUQyZdAp 6GfsnyK0N+C8cUfeW7gjzcNSL12S6I9nhEl6ARKkqk+LKtFrGtkzt8nLma1Z/Y9GvGtaiCVkXonu PWfm+vkD6zn1Qfb/urUTFiW1dRgqeXg8qoEPhAlI23GABcJk1xInQ27KtJK+YMtdzVwNeKaXzw7s 0KaSFIpF3VZaSMai9wYywtnTgZzwdBdGu+D1wXRpDIp4oBQiwzqRS/Ks8TEyZabsrMTfgUaqGU89 1rH1aGtWloeS3bJxKW6qxlgHerRJ71CTzSDhw74IYgLPmE8kdRXr9KuWUlmrO560xiTCTb8PYwwD XXFWvMaDiVyE6wicw5Fjr7YRTQhCl0tx2lsOucz4EKKNCQzDCpyyfzyQpmQ4efMmAGwU8zx2uyd2 DO8GQgHhiY1NXMkrrtI17gQFYwiwbGfMbq4JsZPtDBYYYazaZwJhDLIHKBDjwLV5ixrgbppnNUFF VPsmG0kJjAx7NN4G8TAhG2+gvUJLRpCRI2kiNl7OzWdxeZHjz/7w2DUgl8pRFoSkSxTNhYJ5FiPh GlbLh2702CsPIrAWQM4EN5T3zEtgyYpD0ouTWu1F5VKpcvwAjdaEZ0gQZIUCMyIsbiCs/cWUJpQE ySu6F1vwKIKVIJetW5ISKo0jLUQ6NBthPMbmUiqORUMxxgJjIWQfsyARJEjkjggkQCkgPBeiMZQR EAUcMQ6BgY0QAjISirVBisRq0wUsvvXAZw84/cYhlYmisy6E4GmGmHrPG2WqcAgcD2FRQJsPocdg 5g5wMr3yCWEs2FGJBz1BwlGoEtZYKVlyPlslZHDVrOoPC+dqtfWbOBD5xpLAepJJyOdwITIOPd2w IdmqODfYUDERFCM4+FE7n3+/Cx6vmqFnFZ0mpYIthlILsWqVVh4brlrrt8CcMsplzGUasxxECvgO khyz7ywImNENgywzmGey0LbdRDcw/G9wJkJinUtp5YXPEx3+fIDOB2dle3PgZw16Hp+DjoJUE2VS DDdjcEFSKikVYdnCTuUiDFM1oUto8/Zc4EGdIGbAzIdeurXromI7yAakkAq7hVFgzqSekIHOMjL7 Kp26uXt2YTLKBBqBSTWQnCoQLJIFyUaaVizXYMCExgF4GsgyQWSCyQ3xJBIwKbHSHM1mgkSEcQR8 RbGRNAo01Z7i2pNANbC2IhBAnlPC/dMENCs2dTmxjzSIGBCBRaMjVJJMSAC1M7A75+shrT8ywUWp CoopFFvO6FqbnWSFw0NcCDWl80vBv2WI9qN7qWGV2EKym+QhpuvtHF1yGQkkqCBrCGYWkhNlyW1S FS/KpTTSSleEAHHymBuIdQyM9nZrcLXOVUzyd/fJV4d3nrZtTCw0JyjFhquhtvkXowNhCWqWvRXs 7fQG8m86MOcOaiKue6BB2wDIC/LTbbEPSl4KIyfSoqB7E15cDGahxOil8MAOzOv2FxQbRSUtGrVE gwn0AZWBbYYojQqZGBWOUtLTOKRmNmEydhMsMYyWqxlLkihkMAiMHWspmAqiIYBQ0qAqwEYK4BG2 SB89NpCcOmBbZt9nsNAc3knKJUG2pmjsNCL6IEHyXAmAEaQiUQqJVB04r2rNWlBAY9GwU0JzWpjD mXMjysG1sTz9piTEMbQON4BYZv4lAWIcyyag4qglutoMhJqONwsnWAJmHbO/v4bfBt3mQdKET9rb kACEB0ENxTRaSYCaJog0MLM4z/OtZXYxZydM/emM6laCTQk9zr7be2BwPDp5sC8oEP/B7PTYSQmI SH1JbJWTJCKs+JsYxndyvtp4nYKiMURjBIdP1Ic8e6rtnyoEOO91e9JOO6dKjF8jOuMLbaaPUbZg a9MBgzcGWO6pDHIh6lSSCb2JRiW0JADKQBNkBwV1wnagpId3c+D44d+Ho7dHgJzopBQP/i7kinCh IFYu4vQ=
next reply other threads:[~2001-07-06 8:26 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2001-07-06 8:26 andreas [this message] 2001-11-21 20:56 ciceron 2001-11-21 20:56 ciceron 2002-05-03 14:49 davem
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