From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2209) id 71295383FBA1; Thu, 6 Oct 2022 19:48:10 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 71295383FBA1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1665085690; bh=RZAnXjr6jmVccN50jgxyOz8LEVY1PMaKCQ73tDN7fZA=; h=From:To:Subject:Date:From; b=YxvnrcG8GrgMdtBduVXnsN+dDKq+T3+iWuXPCnNrkiKddPuDoao1lXIdwqvdkAnbV 825iXMtmwGhfFw1O2puEpaLW3McbEokmvXeVRU9hmvadfOV6IY1WYnmczPDObUuEHU 1Vd6AajPMhtzeuU9Q5udDf+Ul/zmv0Xzi3s0xnQ8= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: David Malcolm To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-3138] analyzer: fix another ICE in PR 107158 X-Act-Checkin: gcc X-Git-Author: David Malcolm X-Git-Refname: refs/heads/master X-Git-Oldrev: 30d6356773a838366f6272f7e9900bacb31c44de X-Git-Newrev: 629b4813e91aba0a8fc9b18434ec1808776a4b3d Message-Id: <20221006194810.71295383FBA1@sourceware.org> Date: Thu, 6 Oct 2022 19:48:10 +0000 (GMT) List-Id: https://gcc.gnu.org/g:629b4813e91aba0a8fc9b18434ec1808776a4b3d commit r13-3138-g629b4813e91aba0a8fc9b18434ec1808776a4b3d Author: David Malcolm Date: Thu Oct 6 15:46:49 2022 -0400 analyzer: fix another ICE in PR 107158 I overreduced PR analyzer/107158 in r13-3096-gef878564140cbc, and there was another ICE in the original reproducer, which this patch fixes. gcc/analyzer/ChangeLog: PR analyzer/107158 * store.cc (store::replay_call_summary_cluster): Eliminate special-casing of RK_HEAP_ALLOCATED in favor of sharing code with RK_DECL, avoiding an ICE due to attempting to bind a compound_svalue into a binding_cluster when an svalue in the summary cluster converts to a compound_svalue in the caller. gcc/testsuite/ChangeLog: PR analyzer/107158 * gcc.dg/analyzer/call-summaries-pr107158-2.c: New test. Signed-off-by: David Malcolm Diff: --- gcc/analyzer/store.cc | 34 ++----- .../gcc.dg/analyzer/call-summaries-pr107158-2.c | 108 +++++++++++++++++++++ 2 files changed, 114 insertions(+), 28 deletions(-) diff --git a/gcc/analyzer/store.cc b/gcc/analyzer/store.cc index d2279b53249..2631ea25559 100644 --- a/gcc/analyzer/store.cc +++ b/gcc/analyzer/store.cc @@ -3238,6 +3238,8 @@ store::replay_call_summary_cluster (call_summary_replay &r, caller_sval, NULL /* uncertainty_t * */); } break; + + case RK_HEAP_ALLOCATED: case RK_DECL: { const region *caller_dest_reg @@ -3246,6 +3248,10 @@ store::replay_call_summary_cluster (call_summary_replay &r, return; const svalue *summary_sval = summary.get_any_binding (mgr, summary_base_reg); + if (!summary_sval) + summary_sval = reg_mgr->get_or_create_compound_svalue + (summary_base_reg->get_type (), + summary_cluster->get_map ()); const svalue *caller_sval = r.convert_svalue_from_summary (summary_sval); if (!caller_sval) @@ -3255,34 +3261,6 @@ store::replay_call_summary_cluster (call_summary_replay &r, caller_sval, NULL /* uncertainty_t * */); } break; - case RK_HEAP_ALLOCATED: - { - const region *caller_dest_reg - = r.convert_region_from_summary (summary_base_reg); - gcc_assert (caller_dest_reg); - binding_cluster *caller_cluster - = get_or_create_cluster (caller_dest_reg); - auto_vec summary_keys; - for (auto kv : *summary_cluster) - summary_keys.safe_push (kv.first); - summary_keys.qsort (binding_key::cmp_ptrs); - for (auto summary_key : summary_keys) - { - const binding_key *caller_key - = r.convert_key_from_summary (summary_key); - if (!caller_key) - continue; - const svalue *summary_sval - = summary_cluster->get_map ().get (summary_key); - const svalue *caller_sval - = r.convert_svalue_from_summary (summary_sval); - if (!caller_sval) - caller_sval = reg_mgr->get_or_create_unknown_svalue - (summary_sval->get_type ()); - caller_cluster->bind_key (caller_key, caller_sval); - } - } - break; case RK_ALLOCA: /* Ignore bindings of alloca regions in the summary. */ diff --git a/gcc/testsuite/gcc.dg/analyzer/call-summaries-pr107158-2.c b/gcc/testsuite/gcc.dg/analyzer/call-summaries-pr107158-2.c new file mode 100644 index 00000000000..c2e9e2ba9f2 --- /dev/null +++ b/gcc/testsuite/gcc.dg/analyzer/call-summaries-pr107158-2.c @@ -0,0 +1,108 @@ +/* { dg-additional-options "-fanalyzer-call-summaries -Wno-analyzer-too-complex" } */ + +typedef __SIZE_TYPE__ size_t; +typedef struct _IO_FILE FILE; +extern char *fgets(char *__restrict __s, int __n, FILE *__restrict __stream) + __attribute__((__access__(__write_only__, 1, 2))); +extern void perror(const char *__s); +enum { + _ISspace = ((5) < 8 ? ((1 << (5)) << 8) : ((1 << (5)) >> 8)), +}; +extern const unsigned short int **__ctype_b_loc(void) + __attribute__((__nothrow__, __leaf__)) __attribute__((__const__)); +extern void *malloc(size_t __size) __attribute__((__nothrow__, __leaf__)) +__attribute__((__malloc__)) __attribute__((__alloc_size__(1))); +extern void exit(int __status) __attribute__((__nothrow__, __leaf__)) +__attribute__((__noreturn__)); +extern char *strcpy(char *__restrict __dest, const char *__restrict __src) + __attribute__((__nothrow__, __leaf__)) __attribute__((__nonnull__(1, 2))); +extern size_t strlen(const char *__s) __attribute__((__nothrow__, __leaf__)) +__attribute__((__pure__)) __attribute__((__nonnull__(1))); + +struct mydata { + struct mydata *link; + char *name; + char *type; +}; + +static struct mydata *all_data; +static int line_no; + +_Noreturn static void failed(const char *message) { + perror(message); + exit(1); +} + +static char *string_dup(const char *string) { + char *buf; + + if ((buf = malloc(strlen(string) + 1)) == ((void *)0)) + failed("malloc() failed"); + + return strcpy(buf, string); +} + +static void store_data(const char *name, const char *type) { + struct mydata *p, *q; + + if ((p = (struct mydata *)malloc(sizeof(struct mydata))) == ((void *)0)) + failed("malloc() failed"); + + p->link = ((void *)0); + p->name = string_dup(name); + p->type = string_dup(type); + + if ((q = all_data) == ((void *)0)) + all_data = p; + else { + while (q->link != ((void *)0)) + q = q->link; + q->link = p; + } +} + +static void parse_tbl(char *buffer) { + char *s = buffer; + char *t = s + strlen(s); + + do { + t--; + if (((*__ctype_b_loc())[(int)(((int)*t))] & (unsigned short int)_ISspace)) + *t = '\0'; + else + break; + } while (t > s); + while (((*__ctype_b_loc())[(int)(((int)*s))] & (unsigned short int)_ISspace)) + s++; + buffer = s; + + line_no++; + if (*buffer != ';' && *buffer != '\0') { + if (*buffer == '#') { + store_data(buffer, ""); /* { dg-bogus "leak" "PR analyzer/107158" { xfail *-*-* } } */ + } else { + + while (*s && !((*__ctype_b_loc())[(int)(((int)*s))] & + (unsigned short int)_ISspace)) + s++; + while ( + ((*__ctype_b_loc())[(int)(((int)*s))] & (unsigned short int)_ISspace)) + *s++ = '\0'; + store_data(buffer, s); /* { dg-bogus "leak" "PR analyzer/107158" { xfail *-*-* } } */ + } + } +} + +/* [...snip...] */ + +static void makecfg(FILE *ifp, FILE *ofp, FILE *ofp2) { + char buffer[8192]; + + /* [...snip...] */ + + line_no = 0; + while (fgets(buffer, sizeof(buffer) - 1, ifp)) + parse_tbl(buffer); + + /* [...snip...] */ +}