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Wasm: don't emit DW_LNE_end_sequence when there were no previous command emitted

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This commit is contained in:
Alexey Andreev 2022-11-19 20:15:54 +01:00
parent f7768efd51
commit 7f38697d50
1 changed files with 6 additions and 0 deletions
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6
core/src/main/java/org/teavm/backend/wasm/generate/DwarfLinesGenerator.java
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@ -47,6 +47,7 @@ class DwarfLinesGenerator {
private int address; private int address;
private int file = 1; private int file = 1;
private int line = 1; private int line = 1;
private boolean sequenceStarted;
DwarfLinesGenerator(DwarfStrings strings) { DwarfLinesGenerator(DwarfStrings strings) {
this.strings = strings; this.strings = strings;
@ -178,9 +179,13 @@ class DwarfLinesGenerator {
if (changed) { if (changed) {
instructionsBlob.writeByte(DW_LNS_COPY); instructionsBlob.writeByte(DW_LNS_COPY);
} }
sequenceStarted = true;
} }
void endLineNumberSequence(int address) { void endLineNumberSequence(int address) {
if (!sequenceStarted) {
return;
}
advanceTo(address, line); advanceTo(address, line);
instructionsBlob.writeByte(0); instructionsBlob.writeByte(0);
instructionsBlob.writeByte(1); instructionsBlob.writeByte(1);
@ -188,6 +193,7 @@ class DwarfLinesGenerator {
this.line = 1; this.line = 1;
this.file = 0; this.file = 0;
this.address = 0; this.address = 0;
sequenceStarted = false;
} }
private boolean advanceTo(int address, int line) { private boolean advanceTo(int address, int line) {