From patchwork Tue Aug 4 14:24:30 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Iain Buclaw X-Patchwork-Id: 7997 Received: (qmail 12294 invoked by alias); 4 Aug 2015 14:24:35 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Delivered-To: mailing list gdb-patches@sourceware.org Received: (qmail 12279 invoked by uid 89); 4 Aug 2015 14:24:34 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.1 required=5.0 tests=AWL, BAYES_00, FREEMAIL_FROM, RCVD_IN_DNSWL_LOW, SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-wi0-f175.google.com Received: from mail-wi0-f175.google.com (HELO mail-wi0-f175.google.com) (209.85.212.175) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-GCM-SHA256 encrypted) ESMTPS; Tue, 04 Aug 2015 14:24:33 +0000 Received: by wicgj17 with SMTP id gj17so152912505wic.1 for ; Tue, 04 Aug 2015 07:24:30 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.180.76.132 with SMTP id k4mr44492504wiw.87.1438698270597; Tue, 04 Aug 2015 07:24:30 -0700 (PDT) Received: by 10.27.11.33 with HTTP; Tue, 4 Aug 2015 07:24:30 -0700 (PDT) Date: Tue, 4 Aug 2015 16:24:30 +0200 Message-ID: Subject: [PATCH] PR 18669: Remove use of strtod in libiberty/d-demangle.c From: Iain Buclaw To: GDB Patches X-IsSubscribed: yes Also submitted to upstream GCC. https://gcc.gnu.org/ml/gcc-patches/2015-08/msg00192.html Have tested this against the gdb dlang testsuite and observed no failing tests as a result. Regards Iain. 2015-08-04 Iain Buclaw * d-demangle.c (dlang_parse_real): Remove call to strtod. (strtod): Remove declaration. * testsuite/d-demangle-expected: Update float and complex literal tests to check correct hexadecimal demangling. --- a/libiberty/d-demangle.c +++ b/libiberty/d-demangle.c @@ -28,7 +28,7 @@ If not, see . */ /* This file exports one function; dlang_demangle. - This file imports strtol and strtod for decoding mangled literals. */ + This file imports strtol for decoding mangled literals. */ #ifdef HAVE_CONFIG_H #include "config.h" @@ -44,7 +44,6 @@ If not, see . */ #include #else extern long strtol (const char *nptr, char **endptr, int base); -extern double strtod (const char *nptr, char **endptr); #endif #include @@ -970,8 +969,6 @@ dlang_parse_real (string *decl, const char *mangled) { char buffer[64]; int len = 0; - double value; - char *endptr; /* Handle NAN and +-INF. */ if (strncmp (mangled, "NAN", 3) == 0) @@ -1035,14 +1032,10 @@ dlang_parse_real (string *decl, const char *mangled) mangled++; } - /* Convert buffer from hexadecimal to floating-point. */ + /* Write out the demangled hexadecimal, rather than trying to + convert the buffer into a floating-point value. */ buffer[len] = '\0'; - value = strtod (buffer, &endptr); - - if (endptr == NULL || endptr != (buffer + len)) - return NULL; - - len = snprintf (buffer, sizeof(buffer), "%#g", value); + len = strlen (buffer); string_appendn (decl, buffer, len); return mangled; } --- a/libiberty/testsuite/d-demangle-expected +++ b/libiberty/testsuite/d-demangle-expected @@ -719,19 +719,19 @@ demangle.test!('\U000186a0') # --format=dlang _D8demangle17__T4testVde0A8P6Zv -demangle.test!(42.0000) +demangle.test!(0x0.A8p6) # --format=dlang _D8demangle16__T4testVdeA8P2Zv -demangle.test!(42.0000) +demangle.test!(0xA.8p2) # --format=dlang _D8demangle18__T4testVdeN0A8P6Zv -demangle.test!(-42.0000) +demangle.test!(-0x0.A8p6) # --format=dlang _D8demangle31__T4testVde0F6E978D4FDF3B646P7Zv -demangle.test!(123.456) +demangle.test!(0x0.F6E978D4FDF3B646p7) # --format=dlang _D8demangle15__T4testVdeNANZv @@ -747,27 +747,27 @@ demangle.test!(-Inf) # --format=dlang _D8demangle23__T4testVfe0FFFFFFP128Zv -demangle.test!(3.40282e+38) +demangle.test!(0x0.FFFFFFp128) # --format=dlang _D8demangle32__T4testVde0FFFFFFFFFFFFF8P1024Zv -demangle.test!(1.79769e+308) +demangle.test!(0x0.FFFFFFFFFFFFF8p1024) # --format=dlang _D8demangle19__T4testVfe08PN125Zv -demangle.test!(1.17549e-38) +demangle.test!(0x0.8p-125) # --format=dlang _D8demangle20__T4testVde08PN1021Zv -demangle.test!(2.22507e-308) +demangle.test!(0x0.8p-1021) # --format=dlang _D8demangle51__T4testVrc0C4CCCCCCCCCCCCCDP4c0B666666666666666P6Zv -demangle.test!(12.3000+45.6000i) +demangle.test!(0x0.C4CCCCCCCCCCCCCDp4+0x0.B666666666666666p6i) # --format=dlang _D8demangle52__T4testVrcN0C4CCCCCCCCCCCCCDP4c0B666666666666666P6Zv -demangle.test!(-12.3000+45.6000i) +demangle.test!(-0x0.C4CCCCCCCCCCCCCDp4+0x0.B666666666666666p6i) # --format=dlang _D8demangle22__T4testVG3ua3_616263Zv @@ -787,7 +787,7 @@ demangle.test!([1, 2, 3, 4]) # --format=dlang _D8demangle25__T4testVAdA2e08P1eN08P1Zv -demangle.test!([1.00000, -1.00000]) +demangle.test!([0x0.8p1, -0x0.8p1]) # --format=dlang _D8demangle23__T4testVHiiA2i1i2i3i4Zv