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GET /api/patches/2224711/?format=api
{ "id": 2224711, "url": "http://patchwork.ozlabs.org/api/patches/2224711/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/2407579.ElGaqSPkdT@fomalhaut/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/projects/17/?format=api", "name": "GNU Compiler Collection", "link_name": "gcc", "list_id": "gcc-patches.gcc.gnu.org", "list_email": "gcc-patches@gcc.gnu.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<2407579.ElGaqSPkdT@fomalhaut>", "list_archive_url": null, "date": "2026-04-17T20:23:04", "name": "[Ada] Fix internal error on decimal literal with huge exponent", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "20e92633e02e2e477ab635b977b201c8b5ebe14a", "submitter": { "id": 78832, "url": "http://patchwork.ozlabs.org/api/people/78832/?format=api", "name": "Eric Botcazou", "email": "botcazou@adacore.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/2407579.ElGaqSPkdT@fomalhaut/mbox/", "series": [ { "id": 500401, "url": "http://patchwork.ozlabs.org/api/series/500401/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=500401", "date": "2026-04-17T20:23:04", "name": "[Ada] Fix internal error on decimal literal with huge exponent", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500401/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2224711/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2224711/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "gcc-patches@gcc.gnu.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "gcc-patches@gcc.gnu.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=adacore.com header.i=@adacore.com header.a=rsa-sha256\n header.s=google header.b=dmaTSl7t;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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boundary=\"nextPart5064845.GXAFRqVoOG\"", "Content-Transfer-Encoding": "7Bit", "X-BeenThere": "gcc-patches@gcc.gnu.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Gcc-patches mailing list <gcc-patches.gcc.gnu.org>", "List-Unsubscribe": "<https://gcc.gnu.org/mailman/options/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=unsubscribe>", "List-Archive": "<https://gcc.gnu.org/pipermail/gcc-patches/>", "List-Post": "<mailto:gcc-patches@gcc.gnu.org>", "List-Help": "<mailto:gcc-patches-request@gcc.gnu.org?subject=help>", "List-Subscribe": "<https://gcc.gnu.org/mailman/listinfo/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=subscribe>", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "This is a serious contender for the smallest chunk of code still crashing the \ncompiler after three decades.\n\nTested on x86-64/Linux, applied on the mainline.\n\n\n2026-04-17 Eric Botcazou <ebotcazou@adacore.com>\n\n\tPR ada/107391\n\t* urealp.adb (Decimal_Exponent_Hi): Check that the denominator is\n\tin range before invoking UI_To_Int on it, and cope with failure.\n\t(Decimal_Exponent_Lo): Likewise.\n\n\n2026-04-17 Eric Botcazou <ebotcazou@adacore.com>\n\n\t* gnat.dg/specs/float_literal1.ads: New test.", "diff": "diff --git a/gcc/ada/urealp.adb b/gcc/ada/urealp.adb\nindex 955e5a226dd..0cfeafd67d6 100644\n--- a/gcc/ada/urealp.adb\n+++ b/gcc/ada/urealp.adb\n@@ -173,7 +173,13 @@ package body Urealp is\n \n begin\n if Val.Rbase = 10 then\n- E := UI_To_Int (Val.Den);\n+ if UI_Is_In_Int_Range (Val.Den) then\n+ E := UI_To_Int (Val.Den);\n+ elsif Val.Den < 0 then\n+ return Int'Last; -- Saturation to highest exponent\n+ else\n+ E := Int'Last; -- High estimate\n+ end if;\n \n else\n E := Equivalent_Decimal_Exponent (Val);\n@@ -226,7 +232,13 @@ package body Urealp is\n \n begin\n if Val.Rbase = 10 then\n- E := UI_To_Int (Val.Den);\n+ if UI_Is_In_Int_Range (Val.Den) then\n+ E := UI_To_Int (Val.Den);\n+ elsif Val.Den < 0 then\n+ return Int'Last; -- Low estimate\n+ else\n+ return Int'First; -- Saturation to lowest exponent\n+ end if;\n \n else\n E := Equivalent_Decimal_Exponent (Val);\n", "prefixes": [ "Ada" ] }