From: Vedant Kumar Date: Fri, 4 Mar 2016 08:07:15 +0000 (+0000) Subject: [Coverage] Fix the start/end locations of switch statements X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=22bd871ea66538c1c21929828e2eca2185161c3e;p=platform%2Fupstream%2Fllvm.git [Coverage] Fix the start/end locations of switch statements While pushing switch statements onto the region stack we neglected to specify their start/end locations. This results in a crash (PR26825) if we end up in nested macro expansions without enough information to handle the relevant file exits. I added a test in switchmacro.c and fixed up a bunch of incorrect CHECK lines that specify strange end locations for switches. llvm-svn: 262697 --- diff --git a/clang/lib/CodeGen/CoverageMappingGen.cpp b/clang/lib/CodeGen/CoverageMappingGen.cpp index 9279d1a..adafee4 100644 --- a/clang/lib/CodeGen/CoverageMappingGen.cpp +++ b/clang/lib/CodeGen/CoverageMappingGen.cpp @@ -776,7 +776,7 @@ struct CounterCoverageMappingBuilder BreakContinueStack.back().ContinueCount, BC.ContinueCount); Counter ExitCount = getRegionCounter(S); - pushRegion(ExitCount); + pushRegion(ExitCount, getStart(S), getEnd(S)); } void VisitSwitchCase(const SwitchCase *S) { diff --git a/clang/test/CoverageMapping/switch.c b/clang/test/CoverageMapping/switch.c index 9463eb3..6aa2b31 100644 --- a/clang/test/CoverageMapping/switch.c +++ b/clang/test/CoverageMapping/switch.c @@ -1,44 +1,44 @@ // RUN: %clang_cc1 -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name switch.c %s | FileCheck %s // CHECK: foo void foo(int i) { // CHECK-NEXT: File 0, [[@LINE]]:17 -> [[@LINE+8]]:2 = #0 - switch(i) { + switch(i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+5]]:4 = #1 case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+3]]:10 = #2 return; case 2: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = #3 break; } - int x = 0; // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:2 = #1 + int x = 0; } void nop() {} // CHECK: bar void bar(int i) { // CHECK-NEXT: File 0, [[@LINE]]:17 -> [[@LINE+20]]:2 = #0 - switch (i) + switch (i) // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:6 = #1 ; // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE]]:6 = 0 - switch (i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+16]]:2 = #1 + switch (i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:4 = #2 } - switch (i) // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+13]]:2 = #2 + switch (i) // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = #3 nop(); // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE]]:10 = 0 - switch (i) // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+10]]:2 = #3 + switch (i) // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:10 = #4 case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = #5 nop(); - switch (i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+6]]:2 = #4 + switch (i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+4]]:4 = #6 nop(); // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE+2]]:10 = 0 case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = #7 nop(); } - nop(); // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:2 = #6 + nop(); } // CHECK-NEXT: main int main() { // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE+34]]:2 = #0 int i = 0; - switch(i) { + switch(i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+9]]:4 = #1 case 0: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+7]]:10 = #2 i = 1; break; @@ -48,7 +48,7 @@ int main() { // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE+34]]:2 = #0 default: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = #4 break; } - switch(i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+22]]:2 = #1 + switch(i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+8]]:4 = #5 case 0: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+6]]:10 = #6 i = 1; break; @@ -58,7 +58,7 @@ int main() { // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE+34]]:2 = #0 break; } - switch(i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+12]]:2 = #5 + switch(i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+7]]:4 = #9 case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+5]]:11 = #10 case 2: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+4]]:11 = (#10 + #11) i = 11; @@ -67,7 +67,7 @@ int main() { // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE+34]]:2 = #0 i = 99; } - foo(1); // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:11 = #9 + foo(1); bar(1); return 0; } diff --git a/clang/test/CoverageMapping/switchmacro.c b/clang/test/CoverageMapping/switchmacro.c index 8410c03..f2943b8 100644 --- a/clang/test/CoverageMapping/switchmacro.c +++ b/clang/test/CoverageMapping/switchmacro.c @@ -4,11 +4,11 @@ // CHECK: foo int foo(int i) { // CHECK-NEXT: File 0, [[@LINE]]:16 -> {{[0-9]+}}:2 = #0 - switch (i) { + switch (i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> {{[0-9]+}}:4 = #1 default: // CHECK-NEXT: File 0, [[@LINE]]:3 -> {{[0-9]+}}:11 = #2 if (i == 1) // CHECK-NEXT: File 0, [[@LINE]]:9 -> [[@LINE]]:15 = #2 return 0; // CHECK-NEXT: File 0, [[@LINE]]:7 -> [[@LINE]]:15 = #3 - // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:5 -> [[@LINE+2]]:8 = (#2 - #3) + // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:5 -> [[@LINE+2]]:8 = (#2 - #3) (Expanded file = 1) // CHECK-NEXT: File 0, [[@LINE+1]]:8 -> {{[0-9]+}}:11 = (#2 - #3) FOO(1); case 0: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:13 = ((#2 + #4) - #3) @@ -22,6 +22,16 @@ int foo(int i) { // CHECK-NEXT: File 0, [[@LINE]]:16 -> {{[0-9]+}}:2 = #0 } } +// PR26825 - Crash when exiting macro expansion containing a switch +// CHECK: bar +#define START { while (0) { switch (0) { +#define END }}} +void bar() { + START // CHECK: File 0, [[@LINE]]:8 -> [[@LINE+2]]:6 +default: ; + END +} + int main(int argc, const char *argv[]) { foo(3); return 0;