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From: "njuwy at smail dot nju.edu.cn" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug gcov-profile/100938] New: [GCOV] Coverage changes when a statement is divided in multiple lines Date: Mon, 07 Jun 2021 03:07:53 +0000 [thread overview] Message-ID: <bug-100938-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100938 Bug ID: 100938 Summary: [GCOV] Coverage changes when a statement is divided in multiple lines Product: gcc Version: 10.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: gcov-profile Assignee: unassigned at gcc dot gnu.org Reporter: njuwy at smail dot nju.edu.cn CC: marxin at gcc dot gnu.org Target Milestone: --- $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-pc-linux-gnu/10.2.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../configure -enable-checking=release -enable-languages=c,c++ -disable-multilib Thread model: posix Supported LTO compression algorithms: zlib gcc version 10.2.0 (GCC) $ cat test.c int fn5(int x){ return -x; } int fn2(int x,int y){ return x+3-y; } int fn6(int x,int y){ return x+y; } int fn7(int x){ return 2*x; } int main() { int t1,t2,t3,t4,t5=1; int b=1,y; y = fn5(b && fn2(t1=t2,fn6(fn7(t3) < t4,t5))); y = fn5(b && fn2(t1=t2, fn6(fn7(t3) < t4,t5))); } $ gcc -O0 --coverage test.c;./a.out;gcov test;cat test.c.gcov File 'test.c' Lines executed:100.00% of 14 Creating 'test.c.gcov' -: 0:Source:test.c -: 0:Graph:test.gcno -: 0:Data:test.gcda -: 0:Runs:1 2: 1:int fn5(int x){ 2: 2:return -x; -: 3:} 2: 4:int fn2(int x,int y){ 2: 5:return x+3-y; -: 6:} 2: 7:int fn6(int x,int y){ 2: 8:return x+y; -: 9:} 2: 10:int fn7(int x){ 2: 11:return 2*x; -: 12:} -: 13: 1: 14:int main() -: 15:{ 1: 16:int t1,t2,t3,t4,t5=1; 1: 17:int b=1,y; 1*: 18: y = fn5(b && fn2(t1=t2,fn6(fn7(t3) < t4,t5))); 2*: 19: y = fn5(b && fn2(t1=t2, 1: 20: fn6(fn7(t3) < t4,t5))); -: 21:} Line 18 and 19 should be executed the same number of times
next reply other threads:[~2021-06-07 3:07 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-07 3:07 njuwy at smail dot nju.edu.cn [this message] 2021-06-10 14:51 ` [Bug gcov-profile/100938] " marxin at gcc dot gnu.org
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